/* ═══════════════════════════════════════════════
   IoT Console – main.css
   Design System: Dark Theme
   ═══════════════════════════════════════════════ */

/* ── CSS Variables ── */
:root {
  /* ── Dark Theme (mặc định) ── */
  --bg:      #0a0e1a;
  --bg2:     #0f1525;
  --bg3:     #151d30;
  --bg4:     #1c2640;
  --border:  #1e2d4a;
  --border2: #2a3d5e;
  --accent:  #00e5ff;
  --accent2: #00b4cc;
  --accent3: #0070ff;
  --green:   #00e676;
  --red:     #ff1744;
  --yellow:  #ffd740;
  --orange:  #ff6d00;
  --text:    #e8edf5;
  --text2:   #8899bb;
  --text3:   #4a5a7a;
  --radius:  12px;
  --radius2: 8px;
  
  /* ── Font size base (normal) ── */
  --font-base:   16px;
  --font-small:  13px;
  --font-tiny:   12px;
  --font-medium: 16px;
  --font-large:  18px;
}

/* ── Light Theme ── */
:root.light-theme {
  --bg:      #f5f7fa;
  --bg2:     #ffffff;
  --bg3:     #edf0f5;
  --bg4:     #e1e6ed;
  --border:  #d0d7e0;
  --border2: #b8c2d0;
  --accent:  #0088cc;
  --accent2: #0066aa;
  --accent3: #0055ff;
  --green:   #00c853;
  --red:     #d32f2f;
  --yellow:  #f9a825;
  --orange:  #ef6c00;
  --text:    #1a2332;
  --text2:   #4a5568;
  --text3:   #8895a7;
}

/* ── Font: Small ── */
:root.font-small {
  --font-base:   13px;
  --font-small:  11px;
  --font-tiny:   10px;
  --font-medium: 13px;
  --font-large:  15px;
}
/* ── Font: Large ── */
:root.font-large {
  --font-base:   19px;
  --font-small:  15px;
  --font-tiny:   13px;
  --font-medium: 19px;
  --font-large:  22px;
}

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Inter', sans-serif;
  font-size: var(--font-base);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background .3s, color .3s;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 3px; }

/* ── Auth Page ── */
#authPage {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background:
    radial-gradient(ellipse at 20% 50%, #001a3a 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, #001525 0%, transparent 50%),
    var(--bg);
  position: relative;
}
#authPage::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 39px, var(--border) 39px, var(--border) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, var(--border) 39px, var(--border) 40px);
  opacity: 0.25; pointer-events: none;
}
.auth-box {
  background: rgba(15,21,37,.97);
  border: 1px solid var(--border2);
  border-radius: 20px; padding: 48px; width: 440px;
  position: relative; z-index: 1;
  box-shadow: 0 0 80px rgba(0,229,255,.06), 0 40px 80px rgba(0,0,0,.5);
  animation: slideUp .5s ease;
}
.auth-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 36px; justify-content: center; }
.auth-logo-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--accent3), var(--accent));
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 22px; box-shadow: 0 0 20px rgba(0,229,255,.3);
}
.auth-logo-text { font-family: 'Syne', sans-serif; font-size: 24px; font-weight: 800; letter-spacing: -.5px; }
.auth-logo-text span { color: var(--accent); }
.auth-tabs {
  display: flex; margin-bottom: 32px;
  background: var(--bg3); border-radius: 10px; padding: 4px;
}
.auth-tab {
  flex: 1; padding: 10px; text-align: center; cursor: pointer;
  border-radius: 8px; font-size: var(--font-base); font-weight: 500;
  color: var(--text2); transition: all .2s; letter-spacing: .5px;
}
.auth-tab.active { background: var(--bg4); color: var(--accent); box-shadow: 0 2px 8px rgba(0,0,0,.3); }
.auth-hint { text-align: center; font-size: var(--font-small); color: var(--text3); margin-top: 16px; }

/* ── App Shell ── */
#app { display: none; height: 100vh; flex-direction: column; }

/* ── Topbar ── */
.topbar {
  height: 56px; background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 20px; gap: 14px; flex-shrink: 0;
}
.tl-icon {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--accent3), var(--accent));
  border-radius: 7px; display: flex; align-items: center; justify-content: center; font-size: var(--font-base);
}
.tl-text { font-family: 'Syne', sans-serif; font-size: 15px; font-weight: 800; }
.tl-text span { color: var(--accent); }

/* Topbar logo - clickable */
.topbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 6px 12px;
  margin-left: -12px;
  border-radius: 10px;
  transition: all .2s;
  user-select: none;
}
.topbar-logo:hover {
  background: var(--bg3);
}
.topbar-logo:active {
  transform: scale(.98);
}
.topbar-logo:hover .tl-icon {
  transform: rotate(-5deg) scale(1.05);
}

.topbar-spacer { flex: 1; }

.topbar-avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent3), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: var(--font-small); font-weight: 700; color: #000; cursor: pointer;
}

/* WS Status indicator */
.ws-status {
  display: flex; align-items: center; gap: 5px;
  padding: 4px 10px; border-radius: 6px; font-size: var(--font-tiny);
  background: var(--bg3); border: 1px solid var(--border);
}
.ws-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--text3); }
.ws-dot.connected     { background: var(--green);  box-shadow: 0 0 6px var(--green);  animation: pulse-led 2s infinite; }
.ws-dot.connecting    { background: var(--yellow); animation: pulse-led 1s infinite; }
.ws-dot.server-online { background: var(--accent); box-shadow: 0 0 5px var(--accent); }
.ws-dot.error         { background: var(--red); }

/* ── Layout ── */
.layout { display: flex; flex: 1; overflow: hidden; }

/* ── Sidebar ── */
.sidebar {
  width: 220px; background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; flex-shrink: 0; overflow-y: auto;
}
.sidebar-section { padding: 16px 8px 4px; }
.sidebar-title { font-size: 10px; color: var(--text3); letter-spacing: 2px; text-transform: uppercase; padding: 0 10px 8px; }
.sidebar-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 8px; cursor: pointer;
  font-size: 14px; color: var(--text2);
  transition: all .15s; margin-bottom: 2px; border: 1px solid transparent;
}
.sidebar-item:hover { background: var(--bg3); color: var(--text); }
.sidebar-item.active { background: rgba(0,229,255,.08); color: var(--accent); border-color: rgba(0,229,255,.15); }
.sidebar-item .icon { width: 16px; text-align: center; font-size: var(--font-base); }
.sidebar-badge { margin-left: auto; background: var(--accent); color: #000; font-size: 9px; font-weight: 700; padding: 2px 6px; border-radius: 10px; }

/* ── Main ── */
.main { flex: 1; overflow-y: auto; background: var(--bg); position: relative; z-index: 0; }
.template-header {
  padding: 20px 28px; display: flex; align-items: center; gap: 16px;
  border-bottom: 1px solid var(--border);
}
.tmpl-icon {
  width: 46px; height: 46px; background: var(--bg3);
  border: 1px solid var(--border2); border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.tmpl-info h2 { font-family: 'Inter', sans-serif; font-size: 14px; font-weight: 600; }
.tmpl-info p { font-size: var(--font-small); color: var(--text3); margin-top: 3px; }
.tmpl-actions { margin-left: auto; display: flex; gap: 10px; }

/* ── Forms ── */
.form-group { margin-bottom: 20px; }
.form-label { font-size: var(--font-small); color: var(--text2); margin-bottom: 8px; display: block; letter-spacing: 1.5px; text-transform: uppercase; }
.form-input {
  width: 100%; padding: 12px 16px;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius2); color: var(--text);
  font-family: 'Inter', sans-serif; font-size: var(--font-base);
  outline: none; transition: all .2s;
}
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,229,255,.1); }
.form-input:disabled { opacity: .5; cursor: not-allowed; }
.form-select {
  width: 100%; padding: 11px 14px;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius2); color: var(--text);
  font-family: 'Inter', sans-serif; font-size: 12px;
  outline: none; appearance: none;
}
.form-select:focus { border-color: var(--accent); }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.datetime-input {
  width: 100%; padding: 11px 14px;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius2); color: var(--text);
  font-family: 'Inter', sans-serif; font-size: 12px;
  outline: none; transition: all .2s; color-scheme: dark;
}
.datetime-input:focus { border-color: var(--accent); }
.inline-edit {
  background: transparent; border: none;
  border-bottom: 1px solid transparent;
  color: var(--text); font-family: 'Inter', sans-serif;
  font-size: 12px; width: 100%; outline: none;
  transition: all .2s; padding: 2px 4px;
}
.inline-edit:focus { border-bottom-color: var(--accent); background: rgba(0,229,255,.04); }

/* ── Buttons ── */
.btn-primary {
  width: 100%; padding: 14px;
  background: linear-gradient(135deg, var(--accent3), var(--accent));
  border: none; border-radius: var(--radius2); color: #000;
  font-family: 'Inter', sans-serif; font-size: var(--font-medium); font-weight: 700;
  cursor: pointer; letter-spacing: .5px; transition: all .2s;
  box-shadow: 0 4px 20px rgba(0,229,255,.25);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 30px rgba(0,229,255,.4); }
.btn-edit {
  padding: 8px 18px; background: var(--accent); border: none;
  border-radius: 8px; color: #000;
  font-family: 'Inter', sans-serif; font-size: 12px; font-weight: 700;
  cursor: pointer; transition: all .2s;
}
.btn-edit:hover { background: var(--accent2); }
.btn-ghost {
  padding: 8px 12px; background: transparent;
  border: 1px solid var(--border2); border-radius: 8px;
  color: var(--text2); font-size: 12px; cursor: pointer;
  font-family: 'Inter', sans-serif; transition: all .2s;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger {
  padding: 8px 14px; background: transparent;
  border: 1px solid rgba(255,23,68,.3); border-radius: 8px;
  color: var(--red); font-size: 12px; cursor: pointer;
  font-family: 'Inter', sans-serif; transition: all .2s;
}
.btn-danger:hover { background: rgba(255,23,68,.1); }
.btn-logout {
  padding: 6px 12px; background: transparent;
  border: 1px solid var(--border2); border-radius: 7px;
  color: var(--text3); font-family: 'Inter', sans-serif;
  font-size: var(--font-tiny); cursor: pointer; transition: all .2s;
}
.btn-logout:hover { border-color: var(--red); color: var(--red); }
.btn-sm { padding: 5px 12px; font-size: var(--font-small); border-radius: 6px; cursor: pointer; font-family: 'Inter', sans-serif; transition: all .2s; }
.btn-sm.primary { background: var(--accent); border: none; color: #000; font-weight: 700; }
.btn-sm.ghost { background: transparent; border: 1px solid var(--border2); color: var(--text2); }
.btn-sm.ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm.red { background: transparent; border: 1px solid rgba(255,23,68,.3); color: var(--red); }
.btn-del { background: transparent; border: none; color: var(--text3); cursor: pointer; font-size: 16px; padding: 4px 8px; border-radius: 6px; transition: all .2s; }
.btn-del:hover { 
  color: var(--red); 
  background: rgba(255,23,68,.1);
  transform: scale(1.1);
}
.copy-btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 5px 12px; background: var(--bg4);
  border: 1px solid var(--border2); border-radius: 6px;
  font-size: var(--font-small); color: var(--text2); cursor: pointer; transition: all .2s; margin-top: 10px;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.regen-btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 5px 12px; background: rgba(255,109,0,.08);
  border: 1px solid rgba(255,109,0,.3); border-radius: 6px;
  font-size: var(--font-small); color: var(--orange); cursor: pointer; transition: all .2s; margin-top: 10px; margin-left: 8px;
}
.regen-btn:hover { background: rgba(255,109,0,.15); }

/* ── Pages ── */
.page { display: none; padding: 24px 28px; }
.page.active { display: block; }
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.page-title { font-family: 'Inter', sans-serif; font-size: 16px; font-weight: 700; color: var(--text); }

/* ── Search ── */
.search-wrap { position: relative; display: inline-block; margin-bottom: 18px; }
.search-icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--text3); font-size: var(--font-small); }
.search-bar {
  width: 300px; padding: 10px 16px 10px 38px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text);
  font-family: 'Inter', sans-serif; font-size: 12px;
  outline: none; transition: all .2s;
}
.search-bar:focus { border-color: var(--accent); }

/* ── Alert ── */
.alert-info {
  background: rgba(0,112,255,.06); border: 1px solid rgba(0,112,255,.2);
  border-radius: 8px; padding: 10px 14px; font-size: var(--font-small); color: var(--accent3);
  margin-bottom: 18px; display: flex; align-items: center; gap: 8px;
}
.alert-error {
  background: rgba(255,23,68,.06); border: 1px solid rgba(255,23,68,.2);
  border-radius: 8px; padding: 10px 14px; font-size: var(--font-small); color: var(--red);
  margin-bottom: 18px; display: flex; align-items: center; gap: 8px;
}
.alert-success {
  background: rgba(0,230,118,.06); border: 1px solid rgba(0,230,118,.2);
  border-radius: 8px; padding: 10px 14px; font-size: var(--font-small); color: var(--green);
  margin-bottom: 18px; display: flex; align-items: center; gap: 8px;
}

/* ── Loading skeleton ── */
.skeleton {
  background: linear-gradient(90deg, var(--bg3) 25%, var(--bg4) 50%, var(--bg3) 75%);
  background-size: 200% 100%;
  animation: skeleton-wave 1.5s infinite;
  border-radius: 4px;
}
@keyframes skeleton-wave { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
.skeleton-row { height: 40px; margin-bottom: 8px; }
.skeleton-card { height: 120px; border-radius: var(--radius); margin-bottom: 16px; }

/* ── Datastreams Table ── */
.ds-table { width: 100%; border-collapse: collapse; }
.ds-table th {
  text-align: left; padding: 10px 14px; font-size: var(--font-tiny);
  color: var(--text3); letter-spacing: 1.5px; text-transform: uppercase;
  border-bottom: 1px solid var(--border); font-weight: 500; white-space: nowrap;
}
.ds-table td { padding: 10px 14px; border-bottom: 1px solid rgba(30,45,74,.4); font-size: 12px; vertical-align: middle; }
.ds-table tr:hover td { background: rgba(255,255,255,.015); }
.ds-id { color: var(--text3); font-size: var(--font-small); }
.ds-pin {
  background: var(--bg3); border: 1px solid var(--border2);
  padding: 3px 10px; border-radius: 20px; font-size: var(--font-small); color: var(--accent); display: inline-block;
}
.ds-color-dot { 
  width: 28px; 
  height: 28px; 
  border-radius: 6px; 
  display: inline-block; 
  border: 2px solid var(--border2); 
  cursor: pointer;
  transition: all .2s;
}
.ds-color-dot:hover {
  transform: scale(1.1);
  border-color: var(--accent);
}
.ds-type { color: var(--text2); }
.toggle-sm {
  width: 36px; height: 20px; background: var(--bg4);
  border: 1px solid var(--border2); border-radius: 20px;
  cursor: pointer; position: relative; transition: all .2s; display: inline-block;
}
.toggle-sm::after { content: ''; position: absolute; width: 14px; height: 14px; background: var(--text3); border-radius: 50%; top: 2px; left: 2px; transition: all .2s; }
.toggle-sm.on { background: rgba(0,230,118,.15); border-color: var(--green); }
.toggle-sm.on::after { left: 18px; background: var(--green); box-shadow: 0 0 6px rgba(0,230,118,.5); }
.btn-add-ds {
  margin-top: 18px; padding: 10px 18px; background: transparent;
  border: 1px dashed var(--border2); border-radius: 8px;
  color: var(--text2); font-family: 'Inter', sans-serif;
  font-size: 12px; cursor: pointer; transition: all .2s;
  display: flex; align-items: center; gap: 8px;
}
.btn-add-ds:hover { border-color: var(--accent); color: var(--accent); background: rgba(0,229,255,.04); }

/* ── Dashboard ── */
.dev-header-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  margin-bottom: 20px; display: flex; align-items: center; gap: 20px;
  overflow: visible;   /* Cho phép dropdown thoát ra ngoài card */
}
.dev-avatar {
  width: 56px; height: 56px; background: var(--bg3);
  border: 1px solid var(--border2); border-radius: 14px;
  display: flex; align-items: center; justify-content: center; font-size: 26px;
}
.dev-name { font-family: 'Inter', sans-serif; font-size: 14px; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); display: inline-block; }
.status-dot.off { background: var(--text3); box-shadow: none; }
.dev-sub { font-size: var(--font-small); color: var(--text2); margin-top: 4px; }
.dev-actions { display: flex; gap: 8px; margin-top: 10px; }
.btn-icon {
  width: 32px; height: 32px; background: var(--bg3);
  border: 1px solid var(--border); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: var(--font-base); color: var(--text2); transition: all .2s;
}
.btn-icon:hover { border-color: var(--accent); color: var(--accent); }
.time-filters { display: flex; gap: 4px; margin-bottom: 20px; flex-wrap: wrap; }
.time-btn {
  padding: 5px 12px; background: transparent;
  border: 1px solid var(--border); border-radius: 6px;
  font-family: 'Inter', sans-serif; font-size: var(--font-small);
  color: var(--text3); cursor: pointer; transition: all .2s;
}
.time-btn:hover, .time-btn.active { background: rgba(0,229,255,.06); color: var(--accent); border-color: rgba(0,229,255,.3); }
.dash-edit-bar {
  display: none; align-items: center; gap: 12px;
  background: rgba(0,229,255,.04); border: 1px solid rgba(0,229,255,.15);
  border-radius: 10px; padding: 12px 18px; margin-bottom: 16px;
}
.dash-edit-bar.show { display: flex; }
.dash-edit-bar span { font-size: 12px; color: var(--accent); }
.widget-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.widget-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
  position: relative; overflow: hidden; transition: all .2s;
}
.widget-card.edit-mode { border: 1px dashed rgba(0,229,255,.4); cursor: move; }
.widget-card.edit-mode:hover { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(0,229,255,.1); }
.widget-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent3), var(--accent));
  opacity: 0; transition: opacity .2s;
}
.widget-card:not(.edit-mode):hover::before { opacity: 1; }
.widget-title {
  font-size: var(--font-base); color: var(--text2); letter-spacing: 1.5px;
  font-weight: 700;
  text-transform: uppercase; margin-bottom: 8px;
  display: flex; align-items: center; justify-content: space-between;
}
.widget-pin { 
  font-family: 'Inter', sans-serif;
  font-size: var(--font-tiny); color: var(--accent); background: rgba(0, 229, 255, .1); padding: 2px 6px; border-radius: 4px;
  border: 1px solid rgba(0, 229, 255, .2);
  letter-spacing: 1.2px;
  min-width: 40px;
  text-align: center;
}
.widget-remove {
  display: none; position: absolute; top: 8px; right: 8px;
  width: 22px; height: 22px; background: rgba(255,23,68,.2);
  border: 1px solid rgba(255,23,68,.4); border-radius: 50%;
  color: var(--red); font-size: 12px; cursor: pointer;
  align-items: center; justify-content: center; z-index: 10;
}
.edit-mode .widget-remove { display: flex; }
.widget-card.wide { grid-column: span 2; }
.gauge-wrap { display: flex; flex-direction: column; align-items: center; padding: 4px 0; }
.gauge-val { font-family: 'Inter', sans-serif; font-size: 32px; font-weight: 700; text-align: center; margin-top: -4px; color: var(--text); }
.gauge-val span { font-size: var(--font-large); color: var(--text3); font-weight: 400; }
.gauge-minmax { display: flex; justify-content: space-between; width: 100%; font-size: var(--font-medium); color: var(--text3); margin-top: 4px; }
.toggle-widget { display: flex; align-items: center; justify-content: space-between; padding: 8px 0; }
.toggle-label { font-size: var(--font-large); font-weight: 700; }
.toggle-label.off { color: var(--text3); }
.toggle-label.on { color: var(--text); }
.toggle-big {
  width: 54px; height: 30px; background: var(--bg4);
  border: 1px solid var(--border2); border-radius: 30px;
  cursor: pointer; position: relative; transition: all .3s;
}
.toggle-big::after {
  content: ''; position: absolute; width: 22px; height: 22px;
  background: var(--text3); border-radius: 50%; top: 3px; left: 3px; transition: all .3s;
}
.toggle-big.on { background: rgba(0,230,118,.12); border-color: var(--green); }
.toggle-big.on::after { left: 28px; background: var(--green); box-shadow: 0 0 10px rgba(0,230,118,.5); }
.status-widget { display: flex; align-items: center; justify-content: center; padding: 10px 0; }
.led { width: 30px; height: 30px; border-radius: 50%; }
.led.on { background: var(--green); }
.led.off { background: var(--bg4); border: 1px solid var(--border2); }
.chart-area { height: 90px; margin-top: 6px; }
.mini-chart { width: 100%; height: 100%; }
.add-widget-card {
  background: transparent; border: 1px dashed var(--border2);
  border-radius: var(--radius); padding: 16px;
  display: none; align-items: center; justify-content: center;
  cursor: pointer; flex-direction: column; gap: 8px;
  min-height: 100px; transition: all .2s; color: var(--text3);
}
.add-widget-card:hover { border-color: var(--accent); color: var(--accent); background: rgba(0,229,255,.04); }
.add-widget-card.show { display: flex; }

/* ── Devices ── */
.devices-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.device-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; cursor: pointer; transition: all .2s;
}
.device-card:hover { border-color: var(--border2); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,.3); }
.dc-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.dc-icon {
  width: 42px; height: 42px; background: var(--bg3);
  border: 1px solid var(--border2); border-radius: 10px;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.dc-name { font-family: 'Inter', sans-serif;font-size: var(--font-medium); font-weight: 700; }
.dc-type { font-size: var(--font-tiny); color: var(--text3); margin-top: 2px; letter-spacing: .5px; }
.dc-status { display: flex; align-items: center; gap: 6px; font-size: var(--font-small); margin-bottom: 10px; }
.dc-token { font-size: var(--font-tiny); color: var(--text3); background: var(--bg3); padding: 6px 10px; border-radius: 6px; word-break: break-all; margin-bottom: 10px; }
.tag { padding: 3px 9px; background: var(--bg3); border: 1px solid var(--border); border-radius: 20px; font-size: var(--font-tiny); color: var(--text2); }

/* ── Profile ── */
.profile-grid { display: grid; grid-template-columns: 300px 1fr; gap: 24px; }
.profile-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; text-align: center; }
.profile-avatar-big {
  width: 80px; height: 80px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent3), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 32px; font-weight: 700; color: #000;
  margin: 0 auto 16px; box-shadow: 0 0 30px rgba(0,229,255,.3);
}
.profile-name { font-family: 'Inter', sans-serif; font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.profile-email { font-size: var(--font-small); color: var(--text3); margin-bottom: 20px; }
.profile-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 20px; }
.stat-box { background: var(--bg3); border: 1px solid var(--border); border-radius: 8px; padding: 12px; text-align: center; }
.stat-val { font-family: 'Inter', sans-serif; font-size: 22px; font-weight: 700; color: var(--accent); }
.stat-lbl { font-size: var(--font-tiny); color: var(--text3); margin-top: 2px; letter-spacing: .5px; }
.profile-info-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.info-section { margin-bottom: 28px; }
.info-section-title { font-size: var(--font-small); color: var(--text3); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.info-row { display: flex; align-items: center; margin-bottom: 14px; gap: 12px; }
.info-icon { width: 36px; height: 36px; background: var(--bg3); border: 1px solid var(--border2); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: var(--font-medium); flex-shrink: 0; }
.info-label { font-size: var(--font-tiny); color: var(--text3); letter-spacing: .5px; margin-bottom: 2px; }
.info-value { font-size: var(--font-base); color: var(--text); }
.token-full { background: var(--bg3); border: 1px solid var(--border2); border-radius: 8px; padding: 14px 16px; font-size: var(--font-small); color: var(--accent); word-break: break-all; letter-spacing: .5px; line-height: 1.6; }
.section-divider { height: 1px; background: var(--border); margin: 24px 0; }

/* ── Automation ── */
.sched-grid { display: grid; gap: 14px; }
.sched-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 22px; }
.sched-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.sched-icon { width: 38px; height: 38px; background: var(--bg3); border: 1px solid var(--border2); border-radius: 9px; display: flex; align-items: center; justify-content: center; font-size: 17px; }
.sched-title { font-family: 'Inter', sans-serif; font-size: 13px; font-weight: 600; }
.sched-subtitle { font-size: var(--font-small); color: var(--text3); margin-top: 2px; }
.sched-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.sched-meta { display: flex; gap: 20px; flex-wrap: wrap; }
.sched-meta-item { display: flex; align-items: center; gap: 6px; font-size: var(--font-small); color: var(--text2); }
.sched-meta-item .chip { background: var(--bg3); border: 1px solid var(--border2); padding: 2px 10px; border-radius: 20px; font-size: var(--font-tiny); color: var(--accent); }
.sched-next { font-size: var(--font-small); color: var(--text3); margin-top: 8px; display: flex; align-items: center; gap: 6px; }
.sched-status-on { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 6px var(--green); display: inline-block; }
.sched-status-off { width: 8px; height: 8px; border-radius: 50%; background: var(--text3); display: inline-block; }
.sched-clock {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 6px 14px;
  font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums;
  color: var(--text2); letter-spacing: .3px; white-space: nowrap;
}
.sched-form { background: var(--bg2); border: 1px solid var(--border2); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; }
.sched-form-title { font-family: 'Inter', sans-serif; font-size: 13px; font-weight: 600; color: var(--text2); margin-bottom: 20px; }
.repeat-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.day-chip { padding: 6px 14px; background: var(--bg3); border: 1px solid var(--border2); border-radius: 20px; font-size: var(--font-small); color: var(--text2); cursor: pointer; transition: all .2s; user-select: none; }
.day-chip.active { background: rgba(0,229,255,.1); border-color: var(--accent); color: var(--accent); }

/* ── Modal ── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.72);
  backdrop-filter: blur(4px); display: none;
  align-items: center; justify-content: center; z-index: 1100;
}
.modal-overlay.show { display: flex; }
.modal {
  background: var(--bg2); border: 1px solid var(--border2);
  border-radius: 16px; padding: 30px; width: 520px;
  max-width: 94vw; animation: slideUp .3s ease;
  max-height: 85vh; overflow-y: auto;
}
.modal h3 { font-family: 'Inter', sans-serif; font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 22px; }
.modal-footer { display: flex; gap: 10px; justify-content: flex-end; margin-top: 22px; }
.btn-cancel { padding: 10px 18px; background: transparent; border: 1px solid var(--border2); border-radius: 8px; color: var(--text2); font-family: 'Inter', sans-serif; font-size: 12px; cursor: pointer; }
.btn-save { padding: 10px 20px; background: var(--accent); border: none; border-radius: 8px; color: #000; font-family: 'Inter', sans-serif; font-size: 13px; font-weight: 700; cursor: pointer; }
.token-display {
  background: var(--bg3); border: 1px solid var(--border2);
  border-radius: 8px; padding: 12px 14px; margin-top: 8px;
  display: flex; align-items: center; gap: 8px; font-size: var(--font-tiny); color: var(--accent); word-break: break-all;
}

/* ── Notification Toast ── */
.notif {
  position: fixed; top: 20px; right: 20px; background: var(--bg2);
  border: 1px solid var(--green); border-radius: 10px; padding: 12px 18px;
  font-size: 12px; color: var(--green); z-index: 9999;
  animation: slideIn .3s ease; display: none;
  box-shadow: 0 4px 20px rgba(0,230,118,.15);
}
.notif.show { display: block; }

/* ── Animations ── */
@keyframes slideUp  { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn  { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes pulse-led {
  0%, 100% { box-shadow: 0 0 14px var(--green), 0 0 28px rgba(0,230,118,.3); }
  50%       { box-shadow: 0 0 20px var(--green), 0 0 40px rgba(0,230,118,.5); }
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .widget-grid { grid-template-columns: repeat(2, 1fr); }
  .devices-grid { grid-template-columns: 1fr; }
  .profile-grid { grid-template-columns: 1fr; }
  .sidebar { width: 190px; }
}

/* ════════════════════════════════════════════════
   DASHBOARDS MAIN – Main > Dashboards live view
   ════════════════════════════════════════════════ */

/* ── Device Selector Bar ── */
.dm-device-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.dm-dev-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 16px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: var(--bg3);
  font-size: 12px;
  font-weight: 500;
  color: var(--text2);
  cursor: pointer;
  transition: all .25s;
  user-select: none;
}
.dm-dev-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg4);
}
.dm-dev-pill.active {
  border-color: var(--accent);
  background: rgba(0,229,255,.08);
  color: var(--accent);
  font-weight: 600;
  box-shadow: 0 0 12px rgba(0,229,255,.12);
}

/* ── Live indicator ── */
.dm-live-badge {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-tiny);
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--green);
  text-transform: uppercase;
}
.dm-live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: dmLivePulse 1.8s ease-in-out infinite;
}
@keyframes dmLivePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .3; transform: scale(.6); }
}

/* ── Widget Grid ── */
.dm-widget-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 1100px) { .dm-widget-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 800px)  { .dm-widget-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px)  { .dm-widget-grid { grid-template-columns: 1fr; } }

/* ── Card base ── */
.dm-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  position: relative;
  overflow: hidden;
  transition: all .2s;
}
.dm-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent3), var(--accent));
  opacity: 0; transition: opacity .2s;
}
.dm-card:hover::before { opacity: 1; }

/* ── Card Title ── */
.dm-card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.dm-card-name {
  font-size: var(--font-base);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--text2);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.dm-pin {
  font-family: 'Inter', sans-serif;
  font-size: var(--font-tiny);
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--accent);
  background: rgba(0, 229, 255, .1);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(0, 229, 255, .2);
  min-width: 40px;
  text-align: center;
}


/* ════ GAUGE Widget ════ */
/* ════ GAUGE Widget (Web Dashboard) ════
   Dùng cùng SVG/layout với Developer Dashboard */
.dm-gauge {
  display: flex;
  flex-direction: column;
}
.dm-gauge-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4px 0;
}

/* ════ SWITCH Widget ════ */
.dm-switch {
  min-height: 100px;
  display: flex;
  flex-direction: column;
}
.dm-switch-body {
  flex: 1;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}
.dm-power-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 2px solid var(--border2);
  background: var(--bg3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .2s;
}
.dm-power-btn:hover {
  border-color: var(--border);
  background: var(--bg4);
}
.dm-power-btn.on {
  background: var(--green);
  border-color: var(--green);
}
.dm-power-icon {
  font-size: 20px;
  font-weight: 500;
  line-height: 1;
  transition: all .2s;
  color: var(--text3);
  user-select: none;
}
.dm-power-btn.on .dm-power-icon {
  color: #000;
}
/* Switch right side: label + toggle */
.dm-switch-right {
  display: flex;
  align-items: center;
  gap: 14px;
}
.dm-switch-label {
  font-size: var(--font-base);
  font-weight: 700;
  letter-spacing: 1px;
  min-width: 40px;
  text-align: right;
}
.dm-switch-label.on  { color: var(--green); }
.dm-switch-label.off { color: var(--text3); }

/* Toggle switch (iOS style) */
.toggle-switch {
  width: 48px;
  height: 26px;
  background: var(--bg4);
  border: 2px solid var(--border2);
  border-radius: 20px;
  cursor: pointer;
  position: relative;
  transition: all .3s;
  flex-shrink: 0;
}
.toggle-switch:hover {
  border-color: var(--border);
}
.toggle-switch.on {
  background: var(--green);
  border-color: var(--green);
}
.toggle-thumb {
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: all .3s cubic-bezier(.4, 0, .2, 1);
  box-shadow: 0 2px 4px rgba(0,0,0,.2);
}
.toggle-switch.on .toggle-thumb {
  left: 24px;
}

.dm-toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
/* Override toggle-big color dùng --tc */


/* ════ LED Widget ════ */
.dm-led {
  min-height: 100px;
  display: flex;
  flex-direction: column;
}
.dm-led-body {
  flex: 1;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.dm-led-bulb {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--bg4);
  border: 2px solid var(--border2);
  transition: all .2s;
}
.dm-led-bulb.on {
  background: var(--green);
  border-color: var(--green);
}
.dm-led-text {
  font-size: var(--font-base);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: color .4s;
}

/* ════ CHART Widget ════ */
.dm-chart-wide {
  grid-column: span 2;
  min-height: 180px;
}
.dm-chart-body {
  margin: 6px -2px 2px;
  border-radius: 8px;
  overflow: hidden;
  height: 100px;
}
.dm-chart-body svg {
  display: block;
  width: 100%;
  height: 100%;
}
.dm-chart-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
.dm-chart-stats {
  display: flex;
  gap: 16px;
  font-size: var(--font-tiny);
  color: var(--text3);
  font-family: 'Inter', sans-serif;
}
.dm-chart-current {
  font-size: 20px;
  font-weight: 700;
  font-family: 'Inter', sans-serif;
}

/* ════════════════════════════════════════════════
   ChartWidget – real history chart
   ════════════════════════════════════════════════ */
.cw-wrap {
  background: transparent;
}
.cw-header {
  margin-bottom: 10px;
}
.cw-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.cw-current {
  margin-left: auto;
  font-size: 20px;
  font-weight: 700;
  font-family: 'Inter', sans-serif;
}
.cw-range-row {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.cw-range-btn {
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg4);
  color: var(--text3);
  font-size: var(--font-tiny);
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
}
.cw-range-btn:hover  { border-color: var(--accent); color: var(--accent); }
.cw-range-btn.active {
  background: rgba(0,229,255,.1);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 700;
}
.cw-chart-body {
  border-radius: 8px;
  overflow: hidden;
  margin: 0 -2px;
}
.cw-stats {
  display: flex;
  gap: 16px;
  font-size: var(--font-tiny);
  color: var(--text3);
  font-family: 'Inter', sans-serif;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.cw-stats strong {
  color: var(--text2);
}

/* Schedule enhancements */
.sched-next-run {
  font-size: var(--font-small);
  color: var(--accent);
  font-family: 'Inter', sans-serif;
}

/* ════════════════════════════════════════════════
   DashboardHeader – btn-icon dropdown + info modal
   ════════════════════════════════════════════════ */

/* Nút ··· cần position:relative để dropdown neo vào */
#btnDashMore {
  position: relative;
}

/* Dropdown menu */
.dash-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 190px;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(0,0,0,.5);
  padding: 6px;
  z-index: 1000;
  animation: ddFadeIn .15s ease;
}
.dash-dropdown.open { display: block; }
@keyframes ddFadeIn {
  from { opacity:0; transform:translateY(-6px); }
  to   { opacity:1; transform:translateY(0); }
}
.dash-dd-item {
  padding: 8px 12px;
  border-radius: 7px;
  font-size: 12px;
  color: var(--text2);
  cursor: pointer;
  transition: background .15s, color .15s;
  white-space: nowrap;
}
.dash-dd-item:hover {
  background: var(--bg4);
  color: var(--text);
}
.dash-dd-sep {
  height: 1px;
  background: var(--border);
  margin: 5px 0;
}

/* Spin animation cho nút refresh */
.btn-icon.spinning { animation: btnSpin .6s linear infinite; }
@keyframes btnSpin {
  to { transform: rotate(360deg); }
}

/* Device info table trong modal */
.devinfo-table {
  width: 100%;
  border-collapse: collapse;
}
.devinfo-table tr { border-bottom: 1px solid var(--border); }
.devinfo-table tr:last-child { border-bottom: none; }
.devinfo-table td {
  padding: 10px 4px;
  font-size: var(--font-base);
  vertical-align: top;
}
.devinfo-table td:first-child {
  width: 110px;
  color: var(--text3);
  font-size: var(--font-small);
  text-transform: uppercase;
  letter-spacing: .5px;
  padding-top: 12px;
}
.devinfo-table td:last-child {
  color: var(--text);
  font-weight: 500;
}
.token-box {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--font-small);
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  word-break: break-all;
  color: var(--accent);
  cursor: pointer;
  transition: background .2s;
}
.token-box:hover { background: var(--bg3); }

/* ════════════════════════════════════════════════
   Modal header & close button
   ════════════════════════════════════════════════ */
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.modal-title {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}
.modal-close {
  width: 28px; height: 28px;
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text2);
  font-size: var(--font-base);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
  flex-shrink: 0;
}
.modal-close:hover { background: var(--border2); color: var(--text); }

/* ════════════════════════════════════════════════
   btn-icon-more – nút ··· với dropdown
   ════════════════════════════════════════════════ */
.btn-icon-more {
  width: 32px; height: 32px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--text2);
  transition: all .2s;
  position: relative;   /* dropdown neo vào đây */
  flex-shrink: 0;
}
.btn-icon-more:hover { border-color: var(--accent); color: var(--accent); }

.btn-more-dots {
  font-size: 18px;
  line-height: 1;
  letter-spacing: -1px;
  user-select: none;
  pointer-events: none;
}

/* Dropdown từ btn-icon-more */
.btn-icon-more .dash-dropdown {
  top: calc(100% + 8px);
  right: 0;
  left: auto;
}

/* Override: dropdown trong btn-icon-more phải thoát khỏi overflow */
.btn-icon-more { overflow: visible; }

/* ════════════════════════════════════════════════
   Alert rows trong modal 🔔
   ════════════════════════════════════════════════ */
.alert-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 8px;
  border-radius: 8px;
  margin-bottom: 6px;
  border: 1px solid transparent;
}
.alert-row.warn {
  background: rgba(255, 71, 87, .06);
  border-color: rgba(255, 71, 87, .15);
}
.alert-row.ok {
  background: var(--bg3);
  border-color: var(--border);
}
.alert-icon {
  font-size: var(--font-large);
  flex-shrink: 0;
  margin-top: 1px;
}
.alert-info { flex: 1; min-width: 0; }
.alert-name {
  font-size: var(--font-base);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}
.alert-val {
  font-size: var(--font-small);
  color: var(--text3);
  font-family: 'Inter', sans-serif;
}

/* ════════════════════════════════════════════════
   Device Header – Redesigned action buttons
   ════════════════════════════════════════════════ */
.dev-header-card {
  overflow: visible !important;   /* Dropdown must escape card bounds */
}

.dev-info {
  flex: 1;
  min-width: 0;
}

.dev-status-text {
  font-size: 12px;
  font-weight: 500;
}

/* Right-side action group */
.dev-actions-right {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  margin-left: auto;
}

/* Action button base */
.dh-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 11px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text2);
  font-size: var(--font-small);
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
  font-family: inherit;
  position: relative;
}
.dh-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg4);
}
.dh-btn:active {
  transform: scale(.97);
}
.dh-btn-icon {
  font-size: var(--font-base);
  line-height: 1;
}
.dh-btn-label {
  letter-spacing: .3px;
}

/* Separator */
.dh-sep {
  width: 1px;
  height: 22px;
  background: var(--border);
  margin: 0 3px;
  flex-shrink: 0;
}

/* More button wrapper – needs relative + overflow:visible for dropdown */
.dh-more-wrap {
  position: relative;
}

.dh-btn-more {
  /* nothing extra needed */
}

/* Alert badge on 🔔 button */
.dh-alert-badge {
  position: absolute;
  top: -5px;
  right: -5px;
  background: #ff4444;
  color: #fff;
  font-size: 9px;
  font-weight: 800;
  border-radius: 50%;
  min-width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--bg2);
  pointer-events: none;
  z-index: 1;
}

/* Refresh spin */
.dh-btn.spinning .dh-btn-icon {
  display: inline-block;
  animation: btnSpin .6s linear infinite;
}

/* Dropdown from .dh-more-wrap */
.dh-more-wrap .dash-dropdown {
  top: calc(100% + 8px);
  right: 0;
  left: auto;
  z-index: 1000;
}

/* Responsive: hide labels on small screens */
@media (max-width: 700px) {
  .dh-btn-label { display: none; }
  .dh-btn { padding: 7px 9px; }
}

/* ════════════════════════════════════════════════
   Device Component – redesigned cards + icon picker
   ════════════════════════════════════════════════ */

/* Device card */
.device-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .2s;
  display: flex;
  flex-direction: column;
}
.device-card:hover {
  border-color: var(--border2);
  box-shadow: 0 8px 30px rgba(0,0,0,.3);
  transform: translateY(-2px);
}
.dc-body {
  padding: 20px 20px 14px;
  cursor: pointer;
  flex: 1;
}
.dc-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.dc-icon {
  width: 44px; height: 44px;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  transition: transform .2s;
}
.dc-body:hover .dc-icon { transform: scale(1.08); }
.dc-name {
  font-family: 'Inter', sans-serif;
  font-size: 13px; font-weight: 600;
  color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.dc-type {
  font-size: var(--font-tiny); color: var(--text3);
  margin-top: 2px; letter-spacing: .5px;
  text-transform: uppercase;
}
.dc-status-badge {
  font-size: var(--font-tiny); font-weight: 600;
  padding: 3px 8px; border-radius: 20px;
  flex-shrink: 0;
}
.dc-status-badge.online  { color: var(--green); background: rgba(0,230,118,.1); border: 1px solid rgba(0,230,118,.2); }
.dc-status-badge.offline { color: var(--text3); background: var(--bg4);        border: 1px solid var(--border); }
.dc-token {
  font-size: var(--font-tiny); color: var(--text3);
  background: var(--bg3); padding: 6px 10px;
  border-radius: 6px; word-break: break-all;
  margin-bottom: 8px;
  font-family: 'Inter', sans-serif;
}
.dc-desc {
  font-size: var(--font-small); color: var(--text2);
}

/* Card action row */
.dc-actions {
  display: flex;
  gap: 6px;
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  background: var(--bg3);
}
.dc-btn {
  flex: 1;
  padding: 6px 0;
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text2);
  font-size: var(--font-small);
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
  display: flex; align-items: center; justify-content: center; gap: 4px;
}
.dc-btn:hover   { border-color: var(--accent); color: var(--accent); background: var(--bg2); }
.dc-btn.danger:hover { border-color: var(--red,#ff4444); color: var(--red,#ff4444); }

/* Modal icon preview row */
.dev-icon-row {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 18px;
}
.dev-icon-preview {
  width: 56px; height: 56px;
  background: var(--bg4);
  border: 2px solid var(--border2);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}

/* Icon picker grid */
.icon-picker-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  margin-bottom: 4px;
}
.icon-opt {
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  border-radius: 10px;
  border: 2px solid transparent;
  cursor: pointer;
  background: var(--bg3);
  transition: all .15s;
  user-select: none;
}
.icon-opt:hover   { background: var(--bg4); border-color: var(--border2); transform: scale(1.12); }
.icon-opt.selected {
  border-color: var(--accent);
  background: rgba(0,229,255,.12);
  box-shadow: 0 0 0 3px rgba(0,229,255,.15);
  transform: scale(1.08);
}

/* Big preview in standalone icon modal */
.icon-preview-big {
  width: 72px; height: 72px;
  background: var(--bg3);
  border: 2px solid var(--border2);
  border-radius: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 38px;
  margin: 0 auto;
}

/* ════════════════════════════════════════════════
   Settings Panel – Theme & Font Size Toggle
   ════════════════════════════════════════════════ */

.btn-settings {
  padding: 0;
  width: 36px;
  height: 36px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text2);
  font-size: 15px;
  cursor: pointer;
  transition: all .2s;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: 8px;
}
.btn-settings:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg4);
  transform: rotate(60deg);
}

/* Settings overlay (backdrop) */
.settings-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
.settings-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

/* Settings panel (slide from right) */
.settings-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 380px;
  height: 100vh;
  background: var(--bg2);
  border-left: 1px solid var(--border2);
  box-shadow: -8px 0 32px rgba(0,0,0,.5);
  z-index: 2001;
  transform: translateX(100%);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
  display: flex;
  flex-direction: column;
}
.settings-panel.open {
  transform: translateX(0);
}

/* Header */
.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg3);
}
.settings-header h3 {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}
.settings-close {
  width: 32px;
  height: 32px;
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text2);
  font-size: var(--font-base);
  cursor: pointer;
  transition: all .2s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.settings-close:hover {
  background: var(--border);
  color: var(--text);
}

/* Body */
.settings-body {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

/* Setting row */
.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 20px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 16px;
  transition: all .2s;
}
.setting-row:hover {
  border-color: var(--border2);
  background: var(--bg4);
}

.setting-info {
  flex: 1;
  min-width: 0;
}
.setting-label {
  font-size: var(--font-medium);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.setting-desc {
  font-size: var(--font-small);
  color: var(--text3);
  line-height: 1.4;
}

/* Toggle button */
.setting-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}
.toggle-track {
  width: 52px;
  height: 28px;
  background: var(--bg4);
  border: 2px solid var(--border2);
  border-radius: 20px;
  position: relative;
  transition: all .3s;
}
.setting-toggle.active .toggle-track {
  background: var(--accent);
  border-color: var(--accent);
}
.toggle-thumb {
  width: 20px;
  height: 20px;
  background: var(--text3);
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: all .3s cubic-bezier(.4,0,.2,1);
  box-shadow: 0 2px 6px rgba(0,0,0,.3);
}
.setting-toggle.active .toggle-thumb {
  left: 26px;
  background: #fff;
}
.toggle-label {
  font-size: var(--font-large);
  font-weight: 500;
  color: var(--text2);
  min-width: 80px;
  text-align: left;
}
.setting-toggle.active .toggle-label {
  color: var(--accent);
}

/* Font-size segmented selector */
.font-size-selector {
  display: flex;
  background: var(--bg4);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
  flex-shrink: 0;
}
.font-size-btn {
  flex: 1;
  border: none;
  background: transparent;
  border-radius: 7px;
  cursor: pointer;
  padding: 6px 10px;
  color: var(--text3);
  font-family: inherit;
  font-weight: 700;
  transition: all .15s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 46px;
}
.font-size-btn.active {
  background: var(--bg2);
  color: var(--accent);
  box-shadow: 0 1px 4px rgba(0,0,0,.2);
}
.font-size-btn .fz-label {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: .3px;
  text-transform: uppercase;
  opacity: .7;
}

/* Footer */
.settings-footer {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 500px) {
  .settings-panel {
    width: 100%;
  }
}

/* ── Device card: meta row (ID + last seen) ────────────────── */
.dc-meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}
.dc-id-badge {
  font-size: 10px;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  color: var(--accent);
  background: rgba(var(--accent-rgb, 100,180,255), .10);
  border: 1px solid rgba(var(--accent-rgb, 100,180,255), .20);
  padding: 2px 7px;
  border-radius: 4px;
  flex-shrink: 0;
}
.dc-lastseen {
  font-size: 11px;
  color: var(--text2);
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: default;
  white-space: nowrap;
}
.dc-lastseen-rel {
  color: var(--text3);
  font-size: 10px;
}
.dc-lastseen--never {
  font-size: 11px;
  color: var(--text3);
  font-style: italic;
}

/* ── Device card: Auth Token block (đồng nhất My Profile) ── */
.dc-token-block {
  margin: 0 0 10px;
  padding: 10px 12px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.dc-token-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 6px;
  gap: 8px;
}
.dc-token-label-title {
  font-size: var(--font-small);
  font-weight: 600;
  color: var(--text2);
  white-space: nowrap;
}
.dc-token-hint {
  font-size: 10px;
  color: var(--text3);
  text-align: right;
}
/* ════════════════════════════════════════════
   AI Analytics Panel
   ════════════════════════════════════════════ */

/* ── Tab buttons ── */
.ai-view-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 3px;
}
.ai-tab-btn {
  padding: 5px 14px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text2);
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.ai-tab-btn.active {
  background: var(--accent);
  color: #000;
  font-weight: 600;
}
.ai-tab-btn:not(.active):hover {
  background: var(--bg4);
  color: var(--text);
}

/* ── Trend grid (compact cards) ── */
.ai-trend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 16px;
}
.ai-trend-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 16px 0;
  overflow: hidden;
  transition: border-color .2s;
}
.ai-trend-card:hover { border-color: var(--border2); }
.ai-tc-spark { margin: 0 -16px; }
.ai-bound-row {
  display: flex;
  justify-content: space-between;
  padding: 5px 0 12px;
  font-size: 10px;
  color: var(--text3);
  letter-spacing: .3px;
}
.ai-bound-lbl { font-weight: 600; margin-right: 3px; }

/* ── Range button (shared) ── */
.ai-range-btn {
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--text2);
  font-size: 11px;
  font-family: inherit;
  cursor: pointer;
  transition: all .15s;
}
.ai-range-btn.active,
.ai-range-btn:hover {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
.ai-charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 16px;
}
.ai-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: border-color .2s;
}
.ai-card:hover { border-color: var(--border2); }
.ai-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.ai-card-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.ai-card-pin {
  font-size: 10px;
  color: var(--text3);
  background: var(--bg4);
  padding: 1px 6px;
  border-radius: 4px;
  margin-left: 6px;
}
.ai-card-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.ai-trend {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 9px;
  border-radius: 20px;
  border: 1px solid currentColor;
  letter-spacing: .3px;
}
.ai-trend-up {
  color: #4ade80;
  background: rgba(74,222,128,.08);
  box-shadow: 0 0 8px rgba(74,222,128,.35), inset 0 0 6px rgba(74,222,128,.06);
}
.ai-trend-down {
  color: #f87171;
  background: rgba(248,113,113,.08);
  box-shadow: 0 0 8px rgba(248,113,113,.35), inset 0 0 6px rgba(248,113,113,.06);
}
.ai-trend-stable {
  color: #60a5fa;
  background: rgba(96,165,250,.08);
  box-shadow: 0 0 8px rgba(96,165,250,.3), inset 0 0 6px rgba(96,165,250,.05);
}
.ai-current-val {
  font-size: 16px;
  font-weight: 700;
}
.ai-stats-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.ai-stat {
  flex: 1;
  min-width: 55px;
  background: var(--bg3);
  border-radius: 6px;
  padding: 5px 6px;
  text-align: center;
}
.ai-stat-lbl {
  font-size: 8px;
  color: var(--text3);
  font-weight: 600;
  letter-spacing: .4px;
  text-transform: uppercase;
  margin-bottom: 3px;
}
.ai-stat-val {
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
}
.ai-legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.ai-legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  color: var(--text3);
}
.ai-legend-line {
  display: inline-block;
  width: 20px;
  height: 2px;
  border-radius: 1px;
}
.ai-legend-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff4757;
  box-shadow: 0 0 4px #ff475799;
}
.ai-no-data {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text3);
  font-size: 12px;
  gap: 8px;
}
.ai-loading {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 60px 40px;
  justify-content: center;
  color: var(--text3);
}
.ai-empty {
  text-align: center;
  padding: 80px 40px;
  color: var(--text2);
}
.ai-error {
  text-align: center;
  padding: 40px;
  color: var(--red);
  font-size: 14px;
}

/* compact version of .token-full for inside card */
.dc-token-val {
  padding: 8px 10px !important;
  font-size: 11px !important;
  line-height: 1.5 !important;
  margin-bottom: 0 !important;
  word-break: break-all;
}

/* ════════════════════════════════════════
   SVG Icon System — mask-image approach
   Dùng currentColor để thích ứng theme
   ════════════════════════════════════════ */
.ic {
  display: inline-block;
  width: 1em;
  height: 1em;
  background-color: currentColor;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  vertical-align: -0.1em;
  flex-shrink: 0;
}
.ic-sm  { width: 14px; height: 14px; }
.ic-md  { width: 18px; height: 18px; }
.ic-lg  { width: 22px; height: 22px; }
.ic-xl  { width: 32px; height: 32px; }
.ic-2xl { width: 48px; height: 48px; }

/* ── Navigation ── */
.ic-logo           { -webkit-mask-image: url('../assets/icons/logo.svg');             mask-image: url('../assets/icons/logo.svg'); }
.ic-nav-devices    { -webkit-mask-image: url('../assets/icons/nav-devices.svg');      mask-image: url('../assets/icons/nav-devices.svg'); }
.ic-nav-dashboards { -webkit-mask-image: url('../assets/icons/nav-dashboards.svg');   mask-image: url('../assets/icons/nav-dashboards.svg'); }
.ic-nav-automations{ -webkit-mask-image: url('../assets/icons/nav-automations.svg');  mask-image: url('../assets/icons/nav-automations.svg'); }
.ic-nav-datastreams{ -webkit-mask-image: url('../assets/icons/nav-datastreams.svg');  mask-image: url('../assets/icons/nav-datastreams.svg'); }
.ic-nav-web-dash   { -webkit-mask-image: url('../assets/icons/nav-web-dashboard.svg'); mask-image: url('../assets/icons/nav-web-dashboard.svg'); }
.ic-nav-events     { -webkit-mask-image: url('../assets/icons/nav-events.svg');       mask-image: url('../assets/icons/nav-events.svg'); }
.ic-nav-ai         { -webkit-mask-image: url('../assets/icons/nav-ai.svg');           mask-image: url('../assets/icons/nav-ai.svg'); }
.ic-nav-profile    { -webkit-mask-image: url('../assets/icons/nav-profile.svg');      mask-image: url('../assets/icons/nav-profile.svg'); }

/* ── Device types ── */
.ic-dev-raspberry  { -webkit-mask-image: url('../assets/icons/device-raspberry.svg'); mask-image: url('../assets/icons/device-raspberry.svg'); }
.ic-dev-waveshare  { -webkit-mask-image: url('../assets/icons/device-waveshare.svg'); mask-image: url('../assets/icons/device-waveshare.svg'); }
.ic-dev-ai         { -webkit-mask-image: url('../assets/icons/device-ai.svg');        mask-image: url('../assets/icons/device-ai.svg'); }
.ic-dev-esp        { -webkit-mask-image: url('../assets/icons/device-esp.svg');       mask-image: url('../assets/icons/device-esp.svg'); }
.ic-dev-gateway    { -webkit-mask-image: url('../assets/icons/device-gateway.svg');   mask-image: url('../assets/icons/device-gateway.svg'); }
.ic-dev-modbus     { -webkit-mask-image: url('../assets/icons/device-modbus.svg');    mask-image: url('../assets/icons/device-modbus.svg'); }
.ic-dev-custom     { -webkit-mask-image: url('../assets/icons/device-custom.svg');    mask-image: url('../assets/icons/device-custom.svg'); }

/* ── Action buttons ── */
.ic-edit     { -webkit-mask-image: url('../assets/icons/btn-edit.svg');     mask-image: url('../assets/icons/btn-edit.svg'); }
.ic-save     { -webkit-mask-image: url('../assets/icons/btn-save.svg');     mask-image: url('../assets/icons/btn-save.svg'); }
.ic-refresh  { -webkit-mask-image: url('../assets/icons/btn-refresh.svg');  mask-image: url('../assets/icons/btn-refresh.svg'); }
.ic-info     { -webkit-mask-image: url('../assets/icons/btn-info.svg');     mask-image: url('../assets/icons/btn-info.svg'); }
.ic-alert    { -webkit-mask-image: url('../assets/icons/btn-alert.svg');    mask-image: url('../assets/icons/btn-alert.svg'); }
.ic-settings { -webkit-mask-image: url('../assets/icons/btn-settings.svg'); mask-image: url('../assets/icons/btn-settings.svg'); }
.ic-logout   { -webkit-mask-image: url('../assets/icons/btn-logout.svg');   mask-image: url('../assets/icons/btn-logout.svg'); }
.ic-add      { -webkit-mask-image: url('../assets/icons/btn-add.svg');      mask-image: url('../assets/icons/btn-add.svg'); }
.ic-delete   { -webkit-mask-image: url('../assets/icons/btn-delete.svg');   mask-image: url('../assets/icons/btn-delete.svg'); }
.ic-copy     { -webkit-mask-image: url('../assets/icons/btn-copy.svg');     mask-image: url('../assets/icons/btn-copy.svg'); }
.ic-more     { -webkit-mask-image: url('../assets/icons/btn-more.svg');     mask-image: url('../assets/icons/btn-more.svg'); }
.ic-close    { -webkit-mask-image: url('../assets/icons/btn-close.svg');    mask-image: url('../assets/icons/btn-close.svg'); }
.ic-search   { -webkit-mask-image: url('../assets/icons/btn-search.svg');   mask-image: url('../assets/icons/btn-search.svg'); }
.ic-key      { -webkit-mask-image: url('../assets/icons/btn-key.svg');      mask-image: url('../assets/icons/btn-key.svg'); }
.ic-calendar { -webkit-mask-image: url('../assets/icons/btn-calendar.svg'); mask-image: url('../assets/icons/btn-calendar.svg'); }
.ic-globe    { -webkit-mask-image: url('../assets/icons/btn-globe.svg');    mask-image: url('../assets/icons/btn-globe.svg'); }
.ic-widget   { -webkit-mask-image: url('../assets/icons/btn-widget.svg');   mask-image: url('../assets/icons/btn-widget.svg'); }

/* ════════════════════════════════════════
   RESPONSIVE — Mobile & Tablet
   ════════════════════════════════════════ */

/* Hamburger toggle button (hidden on desktop) */
.btn-hamburger {
  display: none;
  align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: transparent;
  border: 1px solid var(--border); border-radius: 8px;
  color: var(--text2); cursor: pointer;
  transition: all .2s; flex-shrink: 0;
}
.btn-hamburger:hover { background: var(--bg3); color: var(--text); border-color: var(--border2); }

/* Hamburger icon (3 bars via CSS) */
.ham-icon {
  width: 16px; height: 12px;
  display: flex; flex-direction: column; justify-content: space-between;
}
.ham-icon span {
  display: block; height: 2px; border-radius: 2px;
  background: currentColor; transition: all .25s;
}
/* Animate to X when open */
.sidebar.open ~ * .ham-icon span:nth-child(1),
body.sidebar-open .ham-icon span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
body.sidebar-open .ham-icon span:nth-child(2) { opacity: 0; transform: scaleX(0); }
body.sidebar-open .ham-icon span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* Sidebar overlay backdrop */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(2px);
  z-index: 199;
}
.sidebar-overlay.show { display: block; }

/* ── 768px: Tablet / Mobile ── */
@media (max-width: 768px) {
  /* Show hamburger */
  .btn-hamburger { display: flex; }

  /* Topbar compact */
  .topbar { padding: 0 12px; gap: 8px; }

  /* Hide WS text label */
  #wsText { display: none; }

  /* Hide logout text, keep icon */
  .btn-logout-label { display: none; }
  .btn-logout { padding: 6px 10px; }

  /* Sidebar becomes slide-in drawer */
  .sidebar {
    position: fixed;
    top: 56px; left: 0;
    height: calc(100vh - 56px);
    z-index: 200;
    width: 240px;
    transform: translateX(-100%);
    transition: transform .28s cubic-bezier(.4,0,.2,1);
    box-shadow: none;
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 6px 0 32px rgba(0,0,0,.45);
  }

  /* Main takes full width */
  .layout { position: relative; }

  /* Page padding reduce */
  .page { padding: 14px 16px; }

  /* Form grids → single column */
  .form-row-2,
  .form-row-3 { grid-template-columns: 1fr; }

  /* Devices grid single col */
  .devices-grid { grid-template-columns: 1fr; }

  /* Widget grid 2 col */
  .widget-grid { grid-template-columns: repeat(2, 1fr); }

  /* Dashboard widgets on tablet */
  .dm-widget-grid { grid-template-columns: repeat(2, 1fr); }

  /* Profile grid */
  .profile-grid { grid-template-columns: 1fr; }

  /* Datastream table: horizontal scroll */
  .ds-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .ds-table-wrap table { min-width: 560px; }

  /* Page header wraps */
  .page-header { flex-wrap: wrap; gap: 8px; }

  /* Topbar logo text hide on very narrow */
  .tl-text { font-size: 13px; }
}

/* ── 480px: Small Mobile (phone portrait) ── */
@media (max-width: 480px) {
  /* Modal → bottom sheet */
  .modal-overlay {
    align-items: flex-end;
    padding: 0;
  }
  .modal {
    width: 100%; max-width: 100%;
    border-radius: 20px 20px 0 0;
    padding: 24px 16px 32px;
    max-height: 92vh;
    animation: slideUpSheet .3s ease;
  }

  /* Widget grid single col */
  .widget-grid { grid-template-columns: 1fr; }
  .dm-widget-grid { grid-template-columns: 1fr; }

  /* Auth box: tighter padding */
  .auth-box { padding: 24px 16px; margin: 0 8px; }

  /* Topbar: hide logo text */
  .tl-text { display: none; }

  /* Notification toast: full width */
  .notif {
    top: auto; bottom: 12px;
    left: 12px; right: 12px;
    width: auto;
  }

  /* Touch-friendly sidebar items */
  .sidebar-item { padding: 12px 14px; font-size: 15px; }

  /* Touch-friendly buttons */
  .btn-save, .btn-cancel { padding: 12px 18px; font-size: 13px; }
  .btn-primary { padding: 12px; font-size: 14px; }
}

@keyframes slideUpSheet {
  from { opacity: 0; transform: translateY(60%); }
  to   { opacity: 1; transform: translateY(0); }
}