/* ════════════════════════════════════════════════════════════
   Tronix — Luminous Glass Overhaul (v5.0)
   True Glassmorphism | Mesh Backgrounds | Premium Dark Mode
   ════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Mesh Gradient Colors */
  --mesh-1: #00a3f5;
  --mesh-2: #06b6d4;
  --mesh-3: #8b5cf6;
  
  /* UX Defaults */
  --blue-500: #2563eb;
  --blue-600: #1d4ed8;
  --blue-700: #1e40af;
  --link-color: #1d4ed8;
  --link-hover: #1e3a8a;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 40px;
  --blur-std: 20px;
  --transition-std: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-pro: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
  
  /* Light Mode */
  --bg-app: #eff6ff;
  --fg-app: #0f172a;
  --sidebar-bg: rgba(255, 255, 255, 0.62);
  --glass-bg: rgba(255, 255, 255, 0.54);
  --glass-border: rgba(96, 165, 250, 0.42);
  --glass-hover: rgba(255, 255, 255, 0.9);
  --input-bg: rgba(255, 255, 255, 0.46);
  --input-border: rgba(96, 165, 250, 0.36);
  --color-muted: #64748b;
  --sidebar-active: rgba(255, 255, 255, 0.85);

  --color-success: #10b981;
  --color-danger: #ef4444;
  --color-warning: #f59e0b;
  --space-gutter: 24px;
  --view-padding: 32px 48px;
}

[data-theme="dark"] {
  --bg-app: #020617;
  --fg-app: #f8fafc;
  --sidebar-bg: rgba(15, 23, 42, 0.45);
  --glass-bg: rgba(15, 23, 42, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-hover: rgba(30, 41, 59, 0.8);
  --input-bg: rgba(15, 23, 42, 0.4);
  --input-border: rgba(255, 255, 255, 0.1);
  --color-muted: #94a3b8;
  --sidebar-active: rgba(255, 255, 255, 0.05);
  --link-color: #93c5fd;
  --link-hover: #bfdbfe;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-app);
  color: var(--fg-app);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
}

/* ─── Mesh Background ─── */
.mesh-container {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: -10; overflow: hidden; pointer-events: none;
  background:
    radial-gradient(circle at 18% 22%, rgba(56, 189, 248, 0.16), transparent 35%),
    radial-gradient(circle at 82% 8%, rgba(59, 130, 246, 0.12), transparent 32%),
    radial-gradient(circle at 78% 88%, rgba(125, 211, 252, 0.16), transparent 34%),
    var(--bg-app);
}
.mesh-container::before,
.mesh-container::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  pointer-events: none;
  opacity: 0.62;
}
.mesh-container::before {
  width: 240px;
  height: 240px;
  left: 12%;
  top: 20%;
  background: radial-gradient(circle at 30% 30%, rgba(56, 189, 248, 0.9), rgba(56, 189, 248, 0.16) 65%, transparent 100%);
  animation: app-ball-drift-1 10s ease-in-out infinite;
}
.mesh-container::after {
  width: 170px;
  height: 170px;
  right: 14%;
  bottom: 16%;
  background: radial-gradient(circle at 30% 30%, rgba(125, 211, 252, 0.9), rgba(14, 165, 233, 0.16) 65%, transparent 100%);
  animation: app-ball-drift-2 11.5s ease-in-out infinite;
}
[data-theme="dark"] .mesh-container::before,
[data-theme="dark"] .mesh-container::after {
  opacity: 0.2;
}

.mesh-orb {
  position: absolute; width: 60vmax; height: 60vmax; border-radius: 100%;
  filter: blur(80px); opacity: 0.15; animation: orb-move 25s infinite alternate ease-in-out;
}

[data-theme="dark"] .mesh-orb { opacity: 0.12; filter: blur(120px); }

.orb-1 { top: -10%; left: -10%; background: var(--mesh-1); }
.orb-2 { bottom: -10%; right: -10%; background: var(--mesh-2); animation-delay: -5s; }
.orb-3 { top: 40%; left: 60%; background: var(--mesh-3); animation-delay: -10s; width: 40vmax; height: 40vmax; }

@keyframes orb-move {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(15%, 20%) scale(1.1); }
  100% { transform: translate(-10%, -15%) scale(0.95); }
}
@keyframes app-ball-drift-1 {
  0% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.48; }
  50% { transform: translate3d(14px, -16px, 0) scale(1.06); opacity: 0.78; }
  100% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.48; }
}
@keyframes app-ball-drift-2 {
  0% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.46; }
  50% { transform: translate3d(-12px, -14px, 0) scale(1.05); opacity: 0.74; }
  100% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.46; }
}

body::after {
  content: ''; position: fixed; inset: 0; z-index: -9; opacity: 0.03; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3%3Cfilter id='noiseFilter'%3%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3%3C/filter%3%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3%3C/svg%3");
}

/* crisp grid overlay in light mode */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -8;
  pointer-events: none;
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.08) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 92%);
}
[data-theme="dark"] body::before { display: none; }

/* ─── Typography ─── */
h1 { font-size: 2.5rem; font-weight: 800; letter-spacing: -0.05em; line-height: 1.1; }
h2 { font-size: 1.75rem; font-weight: 700; letter-spacing: -0.04em; }
.text-muted { color: var(--color-muted); font-weight: 500; }

/* ─── Glass Components ─── */
.glass-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-std));
  -webkit-backdrop-filter: blur(var(--blur-std));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-gutter);
  box-shadow: var(--shadow-pro);
  transition: var(--transition-std);
  overflow: hidden;
}

.glass-card:hover { border-color: rgba(255,255,255,0.8); transform: translateY(-2px); }

[data-theme="dark"] .glass-card:hover { border-color: rgba(255,255,255,0.15); }

.glass-button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 24px; border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--blue-500), #0ea5e9);
  color: #fff; font-weight: 700; border: none; cursor: pointer;
  transition: var(--transition-std); box-shadow: 0 4px 12px rgba(0, 163, 245, 0.3);
}

.glass-button:hover { transform: translateY(-2px); filter: brightness(1.1); box-shadow: 0 8px 20px rgba(0, 163, 245, 0.4); }
.glass-button:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.glass-input {
  width: 100%; height: 52px; background: var(--input-bg); backdrop-filter: blur(12px);
  border: 1px solid var(--input-border); border-radius: var(--radius-md);
  padding: 0 20px; color: var(--fg-app); outline: none; transition: var(--transition-std);
  font-size: 1rem; font-weight: 500;
}

.glass-input:focus { border-color: var(--blue-500); background: var(--glass-bg); box-shadow: 0 0 0 4px rgba(0, 163, 245, 0.1); }

/* ─── App Structure ─── */
.app-container { display: flex; min-height: 100vh; }
.app-sidebar {
  width: 280px; height: 100vh; position: sticky; top: 0;
  background: var(--sidebar-bg); backdrop-filter: blur(var(--blur-std));
  border-right: 1px solid var(--glass-border);
  display: flex; flex-direction: column; z-index: 100;
}

.app-main { flex: 1; min-width: 0; }
.view-container { max-width: 1200px; margin: 0 auto; padding: var(--view-padding); }

/* ─── Login/Register Refactor ─── */
.auth-page {
  display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px;
}
.auth-shell {
  width: min(1200px, 100%);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
  align-items: stretch;
}
.glass-panel {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow:
    0 24px 48px rgba(15, 23, 42, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.75);
  border-radius: 28px;
  backdrop-filter: blur(30px) saturate(1.15);
  -webkit-backdrop-filter: blur(30px) saturate(1.15);
}
.auth-hero {
  padding: 46px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.auth-hero-badge {
  align-self: flex-start;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(59, 130, 246, 0.3);
  background: rgba(59, 130, 246, 0.12);
  color: #2563eb;
  font-weight: 800;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.auth-hero h1 {
  margin-top: 14px;
  font-size: clamp(2rem, 3vw, 2.8rem);
  color: #0b3b7a;
}
.auth-hero p {
  margin-top: 14px;
  color: #1e3a5f;
  font-size: 1.05rem;
}
.auth-feature-list {
  margin-top: 22px;
  display: grid;
  gap: 10px;
  padding-left: 18px;
  color: #1e40af;
  font-weight: 600;
}
.auth-inline-tools {
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.auth-checkbox {
  font-size: 0.82rem;
  color: var(--color-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.caps-hint {
  margin-top: 6px;
  color: #b45309;
  font-weight: 700;
  font-size: 0.82rem;
}

.auth-card {
  width: 100%; max-width: 440px; padding: 48px; text-align: center;
}

.auth-logo {
  width: 64px; height: 64px; background: linear-gradient(135deg, var(--blue-500), #8b5cf6);
  border-radius: 20px; display: flex; align-items: center; justify-content: center;
  color: #fff; margin: 0 auto 24px; box-shadow: 0 8px 16px rgba(0, 163, 245, 0.3);
}

.auth-form { text-align: left; margin-top: 32px; }
.form-group { margin-bottom: 24px; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 8px; opacity: 0.8; }

.password-input-wrapper { position: relative; }
.password-toggle {
  position: absolute; right: 16px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--color-muted); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}

/* ─── Toasts ─── */
.toast-stack { position: fixed; bottom: 32px; right: 32px; display: flex; flex-direction: column; gap: 12px; z-index: 9999; }
.toast-msg {
  display: flex; align-items: center; gap: 12px; padding: 16px 24px; 
  background: var(--glass-bg); backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border); border-radius: var(--radius-md);
  box-shadow: var(--shadow-pro); animation: slide-in 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1) forwards;
  min-width: 320px; color: var(--fg-app);
}

.toast-success { border-left: 6px solid var(--color-success); }
.toast-error { border-left: 6px solid var(--color-danger); }
.toast-msg.out { animation: slide-out 0.4s forwards; }

@keyframes slide-in { from { opacity: 0; transform: translateX(100px); } to { opacity: 1; transform: translateX(0); } }
@keyframes slide-out { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(100px); } }

/* ─── Animations ─── */
.spinner { width: 20px; height: 20px; border: 3px solid rgba(255,255,255,0.3); border-radius: 50%; border-top-color: #fff; animation: spin 0.8s linear infinite; }
.spinner-small { width: 14px; height: 14px; border: 2px solid rgba(255,255,255,0.3); border-radius: 50%; border-top-color: currentColor; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display: none !important; }

/* ==========================================================================
   App UI Layer (templates/*.html)
   This block styles the classnames used by the current Jinja templates.
   ========================================================================== */

/* Layout */
.app-container { display: flex; min-height: 100vh; }
.main-wrapper { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.main-content { padding: 28px; max-width: 1280px; width: 100%; margin: 0 auto; }

/* Sidebar */
.sidebar {
  width: 286px;
  min-width: 286px;
  height: calc(100vh - 28px);
  position: sticky;
  top: 14px;
  margin: 14px 0 14px 14px;
  border-radius: 24px;
  background: color-mix(in srgb, var(--sidebar-bg) 92%, transparent);
  backdrop-filter: blur(var(--blur-std));
  -webkit-backdrop-filter: blur(var(--blur-std));
  border: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  z-index: 50;
  transition: var(--transition-std);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.16);
}

.sidebar.collapsed { width: 94px; min-width: 94px; }
.sidebar .sidebar-header { display: flex; align-items: center; justify-content: space-between; padding: 22px 18px; }
.sidebar .logo { display: flex; align-items: center; gap: 12px; }
.sidebar .logo-icon { width: 22px; height: 22px; color: var(--fg-app); }
.sidebar .logo-text { font-weight: 800; letter-spacing: 0.08em; font-size: 0.95rem; }
.sidebar.collapsed .logo-text { display: none; }
.sidebar.collapsed .connection-status .status-text { display: none; }
.sidebar.collapsed .sidebar-footer { display: flex; justify-content: center; }

.sidebar-toggle {
  width: 40px; height: 40px;
  border-radius: 14px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--fg-app);
  cursor: pointer;
  transition: var(--transition-std);
}
.sidebar-toggle:hover { background: var(--glass-hover); transform: translateY(-1px); }
.sidebar-toggle svg { width: 18px; height: 18px; }
.sidebar.collapsed .sidebar-toggle { margin-left: auto; margin-right: auto; }

.sidebar-nav { padding: 10px 12px 16px; display: flex; flex-direction: column; gap: 6px; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  text-decoration: none;
  color: var(--color-muted);
  font-weight: 650;
  transition: var(--transition-std);
  border: 1px solid transparent;
}
.nav-item svg { width: 18px; height: 18px; flex: 0 0 auto; }
.sidebar.collapsed .nav-item span { display: none; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 12px 10px; }
.nav-item:hover { background: var(--glass-hover); color: var(--fg-app); border-color: var(--glass-border); }
.nav-item.active { background: var(--sidebar-active); color: var(--fg-app); border-color: var(--glass-border); }

.sidebar-footer { margin-top: auto; padding: 16px 18px; border-top: 1px solid var(--glass-border); }
.connection-status { display: flex; align-items: center; gap: 10px; color: var(--color-muted); font-weight: 600; }
.status-dot { width: 10px; height: 10px; border-radius: 999px; background: #94a3b8; display: inline-block; }
.status-dot.online { background: var(--color-success); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0.12); }
.status-badge .status-dot { width: 8px; height: 8px; }
.status-badge.online .status-dot { background: var(--color-success); }
.status-badge.offline .status-dot { background: var(--color-danger); }

/* Topbar */
.topbar {
  position: sticky; top: 14px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px;
  margin: 10px 14px 0;
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  background: color-mix(in srgb, var(--glass-bg) 88%, transparent);
  backdrop-filter: blur(var(--blur-std));
  -webkit-backdrop-filter: blur(var(--blur-std));
  box-shadow: 0 12px 36px rgba(15, 23, 42, 0.12);
  z-index: 40;
}
.topbar-title { font-size: 1.15rem; font-weight: 800; letter-spacing: -0.02em; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.user-info { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 16px; background: var(--glass-bg); border: 1px solid var(--glass-border); }
.user-avatar { width: 34px; height: 34px; border-radius: 14px; display: grid; place-items: center; font-weight: 800; background: linear-gradient(135deg, var(--blue-500), #8b5cf6); color: #fff; }
.user-name { font-weight: 700; }
.admin-badge { font-size: 0.7rem; font-weight: 800; padding: 4px 8px; border-radius: 999px; background: rgba(245, 158, 11, 0.12); color: var(--color-warning); border: 1px solid rgba(245, 158, 11, 0.2); }

.mobile-menu-btn { display: none; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 44px;
  padding: 0 16px;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--fg-app);
  font-weight: 750;
  cursor: pointer;
  transition: var(--transition-std);
  text-decoration: none;
}
.btn svg { width: 18px; height: 18px; }
.icon-dark svg, .icon-light svg { width: 18px; height: 18px; display: block; }
.btn:hover { background: var(--glass-hover); transform: translateY(-1px); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.btn-full { width: 100%; }

.btn-primary {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
  border-color: rgba(37, 99, 235, 0.42);
  color: #fff;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.26);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
  color: #fff;
  box-shadow: 0 12px 30px rgba(29, 78, 216, 0.32);
}
.btn-secondary { background: var(--glass-bg); }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-ghost:hover {
  background: color-mix(in srgb, var(--glass-bg) 75%, transparent);
  color: var(--fg-app);
  border-color: var(--glass-border);
}
.btn-danger { background: rgba(239, 68, 68, 0.08); border-color: rgba(239, 68, 68, 0.18); color: var(--color-danger); }
.btn-danger:hover { background: rgba(239, 68, 68, 0.12); }
.btn-sm { height: 36px; padding: 0 12px; border-radius: 12px; font-size: 0.85rem; }
.btn-icon { width: 44px; padding: 0; }

/* Forms */
.form-label { display: block; font-size: 0.875rem; font-weight: 700; margin-bottom: 8px; color: color-mix(in srgb, var(--fg-app) 85%, transparent); }
.form-hint { display: block; margin-top: 8px; font-size: 0.8rem; color: var(--color-muted); }
.form-input {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--fg-app);
  padding: 12px 14px;
  outline: none;
  transition: var(--transition-std);
}
.form-input:focus { border-color: rgba(0, 163, 245, 0.6); box-shadow: 0 0 0 4px rgba(0, 163, 245, 0.12); background: var(--glass-bg); }
.form-textarea { min-height: 110px; resize: vertical; }
.form-group { margin-bottom: 18px; }
.form-group select.form-input { height: 44px; }

/* Auth pages */
.auth-container { position: relative; width: 100%; display: grid; place-items: center; padding: 24px; }
.auth-card {
  max-width: 460px;
  width: 100%;
  background: color-mix(in srgb, var(--glass-bg) 96%, rgba(255,255,255,0.25));
  border: 1px solid color-mix(in srgb, var(--glass-border) 95%, rgba(255,255,255,0.28));
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 46px rgba(15, 23, 42, 0.16), inset 0 1px 0 rgba(255,255,255,0.85);
  backdrop-filter: blur(28px) saturate(1.18);
  -webkit-backdrop-filter: blur(28px) saturate(1.18);
  padding: 42px;
}
.auth-header { text-align: center; }
.auth-title { font-size: 1.4rem; margin-top: 6px; color: var(--fg-app); }
.auth-subtitle { margin-top: 8px; color: var(--color-muted); font-weight: 600; }
.auth-link { color: var(--link-color); text-decoration: none; font-weight: 750; }
.auth-link:hover { color: var(--link-hover); text-decoration: underline; }
.auth-footer { margin-top: 18px; text-align: center; color: var(--color-muted); font-weight: 600; }

/* Register page custom background image + split card */
.register-page .mesh-container {
  background:
    radial-gradient(circle at 12% 20%, rgba(56, 189, 248, 0.22), transparent 36%),
    radial-gradient(circle at 84% 12%, rgba(37, 99, 235, 0.16), transparent 32%),
    radial-gradient(circle at 88% 84%, rgba(125, 211, 252, 0.22), transparent 34%),
    linear-gradient(140deg, #eef6ff 0%, #dbeafe 45%, #eff6ff 100%);
}
.register-page .mesh-container::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1600 900'%3E%3Cdefs%3E%3ClinearGradient id='g1' x1='0' y1='0' x2='1' y2='1'%3E%3Cstop offset='0%25' stop-color='%233b82f6' stop-opacity='0.24'/%3E%3Cstop offset='100%25' stop-color='%230ea5e9' stop-opacity='0.08'/%3E%3C/linearGradient%3E%3C/defs%3E%3Ccircle cx='1230' cy='120' r='230' fill='url(%23g1)'/%3E%3Cpath d='M0 760 C 250 640, 480 830, 760 720 C 980 635, 1260 780, 1600 650 L1600 900 L0 900 Z' fill='%23ffffff' fill-opacity='0.36'/%3E%3Cpath d='M0 800 C 260 700, 520 860, 800 760 C 1060 670, 1340 820, 1600 730 L1600 900 L0 900 Z' fill='%2393c5fd' fill-opacity='0.24'/%3E%3C/svg%3E");
  background-size: cover;
  background-position: center;
  opacity: 0.95;
}

.register-stage {
  width: min(1100px, 100%);
  margin: 28px;
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  overflow: hidden;
  min-height: 620px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.52);
  box-shadow: 0 28px 58px rgba(15, 23, 42, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(30px) saturate(1.28);
  -webkit-backdrop-filter: blur(30px) saturate(1.28);
}
.register-visual {
  position: relative;
  padding: 26px;
  background:
    linear-gradient(155deg, rgba(14, 116, 255, 0.22) 0%, rgba(15, 23, 42, 0.26) 100%);
  border-right: 1px solid rgba(255, 255, 255, 0.32);
}
.register-visual-card {
  height: 100%;
  border-radius: 22px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: #eff6ff;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255,255,255,0.04)),
    radial-gradient(circle at 68% 18%, rgba(251, 191, 36, 0.35), transparent 42%),
    radial-gradient(circle at 24% 82%, rgba(96, 165, 250, 0.34), transparent 48%),
    linear-gradient(145deg, #1f2937 0%, #0f172a 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.22);
}
.register-brand {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 0.04em;
}
.register-visual-copy {
  max-width: 360px;
  font-weight: 600;
  line-height: 1.6;
  color: rgba(239, 246, 255, 0.92);
}
.register-form-panel {
  padding: 34px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: rgba(255, 255, 255, 0.20);
  border-left: 1px solid color-mix(in srgb, var(--glass-border) 92%, rgba(255,255,255,0.28));
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.78),
    inset 0 -1px 0 rgba(255,255,255,0.28);
  backdrop-filter: blur(30px) saturate(1.28);
  -webkit-backdrop-filter: blur(30px) saturate(1.28);
}
.login-page .register-form-panel,
.register-page .register-form-panel {
  background: rgba(255, 255, 255, 0.32) !important;
  color: #0f172a !important;
  border-left-color: rgba(148, 197, 255, 0.78) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.92),
    inset 0 -1px 0 rgba(255, 255, 255, 0.42);
}
[data-theme="dark"] .login-page .register-form-panel,
[data-theme="dark"] .register-page .register-form-panel {
  background: rgba(51, 65, 85, 0.34) !important;
  color: #f8fafc !important;
  border-left-color: rgba(148, 163, 184, 0.5) !important;
}
.login-page .form-input,
.register-page .form-input {
  background: rgba(255, 255, 255, 0.42);
  backdrop-filter: blur(16px) saturate(1.16);
  -webkit-backdrop-filter: blur(16px) saturate(1.16);
  color: #0f172a !important;
  border-color: rgba(59, 130, 246, 0.62);
}
[data-theme="dark"] .login-page .form-input,
[data-theme="dark"] .register-page .form-input {
  background: rgba(51, 65, 85, 0.42);
  color: #f8fafc !important;
  border-color: rgba(148, 163, 184, 0.52);
}
.login-page .form-input::placeholder,
.register-page .form-input::placeholder {
  color: rgba(15, 23, 42, 0.82);
}
[data-theme="dark"] .login-page .form-input::placeholder,
[data-theme="dark"] .register-page .form-input::placeholder {
  color: rgba(241, 245, 249, 0.88);
}
.login-page .form-label,
.register-page .form-label {
  color: #0b1220 !important;
  font-weight: 800;
}
[data-theme="dark"] .login-page .form-label,
[data-theme="dark"] .register-page .form-label {
  color: #f1f5f9 !important;
}
.login-page .auth-title,
.register-page .auth-title {
  color: #0f172a !important;
}
[data-theme="dark"] .login-page .auth-title,
[data-theme="dark"] .register-page .auth-title {
  color: #f8fafc !important;
}
.login-page .auth-subtitle,
.register-page .auth-subtitle {
  color: rgba(15, 23, 42, 0.88) !important;
}
[data-theme="dark"] .login-page .auth-subtitle,
[data-theme="dark"] .register-page .auth-subtitle {
  color: rgba(248, 250, 252, 0.94) !important;
}
.login-page .auth-checkbox,
.register-page .auth-checkbox,
.login-page .form-hint,
.register-page .form-hint,
.login-page .caps-hint,
.register-page .caps-hint {
  color: rgba(15, 23, 42, 0.82) !important;
}
[data-theme="dark"] .login-page .auth-footer,
[data-theme="dark"] .register-page .auth-footer {
  color: rgba(241, 245, 249, 0.9) !important;
}
.login-page .auth-footer,
.register-page .auth-footer {
  color: rgba(15, 23, 42, 0.86) !important;
}
[data-theme="dark"] .login-page .auth-checkbox,
[data-theme="dark"] .register-page .auth-checkbox,
[data-theme="dark"] .login-page .form-hint,
[data-theme="dark"] .register-page .form-hint,
[data-theme="dark"] .login-page .caps-hint,
[data-theme="dark"] .register-page .caps-hint {
  color: rgba(241, 245, 249, 0.84) !important;
}
.register-form-panel .auth-form {
  margin-top: 18px;
}

/* Login page artwork + custom tech image */
.login-page .mesh-container {
  background:
    radial-gradient(circle at 12% 20%, rgba(56, 189, 248, 0.25), transparent 35%),
    radial-gradient(circle at 78% 14%, rgba(29, 78, 216, 0.22), transparent 36%),
    radial-gradient(circle at 82% 88%, rgba(14, 165, 233, 0.18), transparent 38%),
    linear-gradient(145deg, #eef6ff 0%, #dbeafe 46%, #eff6ff 100%);
}
.login-visual-card {
  justify-content: flex-start;
  gap: 16px;
}
.auth-side-image {
  width: 100%;
  height: 220px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  object-fit: cover;
  object-position: center;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2), 0 10px 28px rgba(2, 6, 23, 0.28);
}
.auth-logo-only {
  justify-content: center;
  align-items: center;
  gap: 0;
}
.auth-side-logo {
  width: min(320px, 86%);
  height: auto;
  max-height: 280px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.08);
  padding: 18px;
}

/* subtle dynamic color balls for auth pages */
.auth-color-balls {
  position: fixed;
  inset: 0;
  z-index: -7;
  pointer-events: none;
  overflow: hidden;
}
.auth-ball {
  position: absolute;
  border-radius: 999px;
  filter: blur(1px);
  opacity: 0.72;
  animation: float-ball 9.5s ease-in-out infinite, fade-ball 6.2s ease-in-out infinite;
}
.ball-a {
  width: 180px; height: 180px;
  left: 8%; top: 18%;
  background: radial-gradient(circle at 30% 30%, rgba(56,189,248,0.9), rgba(56,189,248,0.18) 65%, transparent 100%);
}
.ball-b {
  width: 130px; height: 130px;
  right: 14%; top: 26%;
  background: radial-gradient(circle at 30% 30%, rgba(147,197,253,0.9), rgba(59,130,246,0.18) 65%, transparent 100%);
  animation-delay: -4s;
}
.ball-c {
  width: 220px; height: 220px;
  right: 22%; bottom: 12%;
  background: radial-gradient(circle at 35% 35%, rgba(14,165,233,0.85), rgba(14,165,233,0.16) 68%, transparent 100%);
  animation-delay: -8s;
}
.ball-d {
  width: 110px; height: 110px;
  left: 38%; bottom: 18%;
  background: radial-gradient(circle at 30% 30%, rgba(191,219,254,0.92), rgba(96,165,250,0.18) 64%, transparent 100%);
  animation-delay: -2.5s;
}
.ball-e {
  width: 95px; height: 95px;
  left: 62%; top: 14%;
  background: radial-gradient(circle at 30% 30%, rgba(125,211,252,0.9), rgba(14,165,233,0.18) 64%, transparent 100%);
  animation-delay: -6.5s;
}
@keyframes float-ball {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  25% { transform: translate3d(10px, -14px, 0) scale(1.04); }
  50% { transform: translate3d(-8px, -20px, 0) scale(1.07); }
  75% { transform: translate3d(8px, -12px, 0) scale(1.03); }
  100% { transform: translate3d(0, 0, 0) scale(1); }
}
@keyframes fade-ball {
  0% { opacity: 0.48; }
  50% { opacity: 0.84; }
  100% { opacity: 0.48; }
}

/* Sections / cards */
.content-section {
  margin-top: 18px;
  background: color-mix(in srgb, var(--glass-bg) 78%, transparent);
  border: 1px solid color-mix(in srgb, var(--glass-border) 95%, rgba(255,255,255,0.1));
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 42px rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(var(--blur-std));
  -webkit-backdrop-filter: blur(var(--blur-std));
  padding: 18px;
}
.section-header { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 14px; }
.section-title { display: inline-flex; align-items: center; gap: 10px; font-size: 1.1rem; font-weight: 850; }
.section-title svg { width: 18px; height: 18px; }

/* Tables */
.table-container { width: 100%; overflow: auto; -webkit-overflow-scrolling: touch; border-radius: 16px; border: 1px solid var(--glass-border); background: color-mix(in srgb, var(--glass-bg) 68%, transparent); }
.data-table { width: 100%; border-collapse: collapse; }
.data-table thead th {
  text-align: left;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
  padding: 14px 14px;
  border-bottom: 1px solid var(--glass-border);
}
.data-table tbody td { padding: 14px 14px; border-bottom: 1px solid color-mix(in srgb, var(--glass-border) 70%, transparent); vertical-align: top; }
.data-table tbody tr:hover { background: color-mix(in srgb, var(--glass-hover) 60%, transparent); }
.timestamp { color: var(--color-muted); font-weight: 650; }
.payload-preview { display: inline-block; max-width: 520px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.payload-json { margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size: 0.85rem; background: rgba(2, 6, 23, 0.04); padding: 12px; border-radius: 12px; border: 1px solid var(--glass-border); overflow: auto; }
.payload-json-compact { max-height: 120px; }
[data-theme="dark"] .payload-json { background: rgba(255, 255, 255, 0.03); }

/* Dashboard */
.stats-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.stat-card { display: flex; gap: 14px; align-items: center; padding: 16px; background: color-mix(in srgb, var(--glass-bg) 72%, transparent); border: 1px solid var(--glass-border); border-radius: 18px; box-shadow: var(--shadow-pro); }
.stat-icon { width: 44px; height: 44px; border-radius: 16px; display: grid; place-items: center; background: rgba(0, 163, 245, 0.10); color: var(--blue-500); border: 1px solid rgba(0, 163, 245, 0.18); }
.stat-icon.online { background: rgba(16, 185, 129, 0.10); color: var(--color-success); border-color: rgba(16, 185, 129, 0.18); }
.stat-icon.offline { background: rgba(239, 68, 68, 0.10); color: var(--color-danger); border-color: rgba(239, 68, 68, 0.18); }
.stat-icon svg { width: 20px; height: 20px; }
.stat-label { color: var(--color-muted); font-weight: 700; font-size: 0.85rem; }
.stat-value { font-weight: 900; font-size: 1.5rem; letter-spacing: -0.02em; }
.stat-value.online { color: var(--color-success); }
.stat-value.offline { color: var(--color-danger); }

.refresh-indicator { display: none; align-items: center; gap: 8px; color: var(--color-muted); font-weight: 700; font-size: 0.85rem; }
.refresh-indicator.active { display: inline-flex; }
.last-updated { color: var(--color-muted); font-weight: 650; font-size: 0.85rem; }
.quick-actions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.action-card {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 14px;
  border-radius: 18px;
  text-decoration: none;
  background: color-mix(in srgb, var(--glass-bg) 80%, transparent);
  border: 1px solid var(--glass-border);
  transition: var(--transition-std);
  color: var(--fg-app);
}
.action-card:hover { transform: translateY(-2px); background: var(--glass-hover); }
.action-icon { width: 42px; height: 42px; border-radius: 16px; display: grid; place-items: center; background: rgba(139, 92, 246, 0.10); border: 1px solid rgba(139, 92, 246, 0.18); color: #8b5cf6; }
.action-icon svg { width: 20px; height: 20px; }
.action-label { font-weight: 850; }

/* Devices */
.page-header { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 16px; }
.header-subtitle { color: var(--color-muted); font-weight: 650; }
.devices-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.device-card {
  cursor: pointer;
  padding: 16px;
  border-radius: 18px;
  background: color-mix(in srgb, var(--glass-bg) 76%, transparent);
  border: 1px solid color-mix(in srgb, var(--glass-border) 95%, rgba(255,255,255,0.1));
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
  transition: var(--transition-std);
}
.device-card-static { cursor: default; }
.device-card:hover { transform: translateY(-2px); background: var(--glass-hover); }
.device-card-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.device-icon { width: 44px; height: 44px; border-radius: 16px; display: grid; place-items: center; background: rgba(0, 163, 245, 0.10); border: 1px solid rgba(0, 163, 245, 0.18); color: var(--blue-500); }
.device-icon svg { width: 20px; height: 20px; }
.status-badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px; border-radius: 999px; font-size: 0.8rem; font-weight: 800; border: 1px solid var(--glass-border); background: color-mix(in srgb, var(--glass-bg) 70%, transparent); }
.status-badge.online { color: var(--color-success); }
.status-badge.offline { color: var(--color-danger); }
.device-name { margin-top: 10px; font-size: 1.05rem; font-weight: 900; letter-spacing: -0.02em; }
.device-type { display: inline-block; margin-top: 4px; color: var(--color-muted); font-weight: 700; }
.device-location { margin-top: 8px; display: inline-flex; align-items: center; gap: 8px; color: var(--color-muted); font-weight: 650; }
.device-location svg { width: 16px; height: 16px; }
.device-card-footer { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--glass-border); }
.last-seen { color: var(--color-muted); font-weight: 650; font-size: 0.85rem; }

/* Empty / loading */
.loading-state, .loading-state-inline { display: flex; align-items: center; justify-content: center; gap: 10px; color: var(--color-muted); font-weight: 700; padding: 24px; }
.spinner-large { width: 26px; height: 26px; animation: spin 0.8s linear infinite; }
.empty-state { display: grid; place-items: center; gap: 8px; padding: 18px; color: var(--color-muted); font-weight: 700; }
.empty-state svg { width: 22px; height: 22px; opacity: 0.85; }
.empty-state-full { margin-top: 18px; padding: 28px; border-radius: var(--radius-lg); border: 1px dashed var(--glass-border); background: color-mix(in srgb, var(--glass-bg) 70%, transparent); text-align: center; }
.empty-state-full .empty-icon { margin: 0 auto 10px; width: 56px; height: 56px; display: grid; place-items: center; color: var(--color-muted); }
.empty-state-full .empty-icon svg { width: 38px; height: 38px; }
.empty-state-full h3 { font-size: 1.1rem; font-weight: 900; margin-bottom: 6px; color: var(--fg-app); }
.empty-state-full p { color: var(--color-muted); font-weight: 650; margin-bottom: 14px; }

/* Modals */
.modal-overlay {
  position: fixed; inset: 0;
  display: none;
  align-items: center; justify-content: center;
  padding: 24px;
  background: rgba(2, 6, 23, 0.45);
  z-index: 200;
}
.modal-overlay.active { display: flex; }
.modal {
  width: min(640px, 100%);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pro);
  backdrop-filter: blur(var(--blur-std));
  -webkit-backdrop-filter: blur(var(--blur-std));
  overflow: hidden;
}
.modal-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 16px; border-bottom: 1px solid var(--glass-border); }
.modal-title { font-size: 1.0rem; font-weight: 900; display: inline-flex; align-items: center; gap: 10px; }
.modal-title svg { width: 18px; height: 18px; }
.modal-close { width: 40px; height: 40px; border-radius: 14px; border: 1px solid var(--glass-border); background: var(--glass-bg); cursor: pointer; color: var(--fg-app); transition: var(--transition-std); }
.modal-close:hover { background: var(--glass-hover); transform: translateY(-1px); }
.modal-close svg { width: 18px; height: 18px; }
.modal-body { padding: 16px 16px; }
.modal-footer { padding: 16px 16px; border-top: 1px solid var(--glass-border); display: flex; gap: 10px; justify-content: flex-end; }
.modal-footer .btn-full { justify-content: center; }

.warning-banner { display: flex; gap: 12px; align-items: flex-start; padding: 12px; border-radius: 16px; border: 1px solid rgba(245, 158, 11, 0.25); background: rgba(245, 158, 11, 0.08); color: var(--fg-app); }
.warning-banner svg { width: 20px; height: 20px; color: var(--color-warning); flex: 0 0 auto; margin-top: 2px; }
.api-key-display { margin-top: 14px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; padding: 12px; border-radius: 16px; border: 1px solid var(--glass-border); background: color-mix(in srgb, var(--glass-bg) 80%, transparent); }
.api-key-display code { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size: 0.95rem; font-weight: 750; overflow-wrap: anywhere; word-break: break-word; flex: 1 1 220px; }
.usage-example { margin-top: 14px; }
.usage-title { color: var(--color-muted); font-weight: 700; margin-bottom: 10px; }
.usage-code { display: block; padding: 12px; border-radius: 16px; border: 1px solid var(--glass-border); background: rgba(2, 6, 23, 0.04); font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size: 0.85rem; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-word; }
[data-theme="dark"] .usage-code { background: rgba(255, 255, 255, 0.03); }

/* Device detail */
.back-link { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--color-muted); font-weight: 800; }
.back-link svg { width: 18px; height: 18px; }
.back-link:hover { color: var(--fg-app); }
.device-header { margin-top: 12px; padding: 18px; border-radius: var(--radius-lg); background: var(--glass-bg); border: 1px solid var(--glass-border); box-shadow: var(--shadow-pro); }
.device-header-main { display: flex; align-items: center; gap: 14px; }
.device-header-icon { width: 52px; height: 52px; border-radius: 20px; display: grid; place-items: center; background: rgba(0, 163, 245, 0.10); border: 1px solid rgba(0, 163, 245, 0.18); color: var(--blue-500); }
.device-header-icon svg { width: 22px; height: 22px; }
.device-title { font-size: 1.6rem; font-weight: 950; letter-spacing: -0.03em; }
.device-meta { display: flex; align-items: center; gap: 10px; margin-top: 6px; flex-wrap: wrap; }
.device-type-badge { display: inline-flex; align-items: center; padding: 6px 10px; border-radius: 999px; font-weight: 850; font-size: 0.8rem; border: 1px solid var(--glass-border); background: color-mix(in srgb, var(--glass-bg) 70%, transparent); }
.device-header-details { margin-top: 14px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.detail-item { display: flex; flex-direction: column; gap: 6px; padding: 12px; border-radius: 16px; border: 1px solid var(--glass-border); background: color-mix(in srgb, var(--glass-bg) 80%, transparent); }
.detail-label { color: var(--color-muted); font-weight: 750; font-size: 0.8rem; letter-spacing: 0.02em; text-transform: uppercase; }
.detail-value { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; }
.detail-value svg { width: 16px; height: 16px; color: var(--color-muted); }
.detail-value.copyable { cursor: pointer; }
.detail-value.copyable:hover { text-decoration: underline; }
.device-description { margin-top: 14px; padding: 12px; border-radius: 16px; border: 1px solid var(--glass-border); background: color-mix(in srgb, var(--glass-bg) 80%, transparent); }
.device-description p { margin-top: 8px; color: var(--color-muted); font-weight: 650; }

.telemetry-cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.telemetry-card { padding: 14px; border-radius: 18px; border: 1px solid var(--glass-border); background: color-mix(in srgb, var(--glass-bg) 85%, transparent); }
.telemetry-label { color: var(--color-muted); font-weight: 750; font-size: 0.85rem; }
.telemetry-value { margin-top: 6px; display: block; font-size: 1.35rem; font-weight: 950; letter-spacing: -0.02em; }
.telemetry-unit { margin-top: 2px; display: block; color: var(--color-muted); font-weight: 700; font-size: 0.85rem; }
.auto-refresh-badge { font-size: 0.8rem; font-weight: 800; color: var(--color-muted); }

/* Admin */
.admin-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.admin-stat { display: flex; align-items: center; gap: 14px; padding: 16px; border-radius: 18px; border: 1px solid var(--glass-border); background: color-mix(in srgb, var(--glass-bg) 74%, transparent); box-shadow: var(--shadow-pro); }
.admin-create-form { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; align-items: end; }
.admin-stat-icon { width: 44px; height: 44px; border-radius: 16px; display: grid; place-items: center; background: rgba(139, 92, 246, 0.10); border: 1px solid rgba(139, 92, 246, 0.18); color: #8b5cf6; }
.admin-stat-icon svg { width: 20px; height: 20px; }
.admin-stat-value { font-weight: 950; font-size: 1.5rem; }
.admin-stat-label { color: var(--color-muted); font-weight: 750; font-size: 0.85rem; }
.action-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.role-badge { display: inline-flex; padding: 6px 10px; border-radius: 999px; font-weight: 850; font-size: 0.8rem; border: 1px solid var(--glass-border); background: color-mix(in srgb, var(--glass-bg) 70%, transparent); }
.role-badge.admin { color: var(--color-warning); border-color: rgba(245, 158, 11, 0.2); background: rgba(245, 158, 11, 0.08); }
.role-badge.user { color: var(--blue-500); border-color: rgba(0, 163, 245, 0.2); background: rgba(0, 163, 245, 0.08); }

/* Toast container legacy class support */
.toast-container { position: fixed; bottom: 32px; right: 32px; z-index: 9999; }

/* Global center loading overlay for major data loads */
.page-loader {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(2, 6, 23, 0.22);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1200;
}
.page-loader.active { display: flex; }
.page-loader-content {
  min-width: 220px;
  padding: 18px 20px;
  border-radius: 18px;
  border: 1px solid var(--glass-border);
  background: color-mix(in srgb, var(--glass-bg) 85%, transparent);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.18);
  display: grid;
  place-items: center;
  gap: 8px;
  color: var(--fg-app);
  font-weight: 700;
}

/* Auth page top-right theme toggle */
.auth-theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 20;
}

/* Settings page polish */
.settings-layout {
  display: grid;
  gap: 16px;
}
.settings-card {
  padding: 20px;
}
.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.settings-form {
  display: grid;
  gap: 4px;
}
.settings-actions {
  margin-top: 6px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Support */
.support-layout { display: grid; gap: 16px; }
.support-intro { color: var(--color-muted); font-weight: 650; line-height: 1.6; }
.support-grid { display: grid; gap: 12px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.support-card {
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  background: color-mix(in srgb, var(--glass-bg) 82%, transparent);
  display: grid;
  gap: 8px;
}
.support-link {
  color: var(--link-color);
  text-decoration: none;
  font-weight: 750;
  word-break: break-word;
}
.support-link:hover { text-decoration: underline; }
.support-report-form { display: grid; gap: 6px; }
.support-report-grid { display: grid; gap: 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.support-report-actions { margin-top: 2px; display: flex; justify-content: flex-end; }
.support-note { margin-top: 6px; color: var(--color-muted); font-size: 0.84rem; font-weight: 600; }

[data-theme="dark"] .settings-card .detail-item {
  background: color-mix(in srgb, var(--glass-bg) 70%, transparent);
}

/* Mobile */
.mobile-overlay { display: none; position: fixed; inset: 0; background: rgba(2, 6, 23, 0.45); z-index: 45; }
.mobile-overlay.active { display: block; }
.mobile-bottom-nav { display: none; }

@media (max-width: 1024px) {
  .devices-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .telemetry-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats-grid { grid-template-columns: 1fr; }
  .quick-actions { grid-template-columns: 1fr; }
  .admin-stats { grid-template-columns: 1fr; }
  .main-content { padding: 22px; }
  .admin-create-form { grid-template-columns: 1fr; }
  .auth-shell { grid-template-columns: 1fr; }
  .auth-hero { order: 2; padding: 28px; }
  .register-stage { grid-template-columns: 1fr; min-height: unset; }
  .register-visual { min-height: 220px; border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.32); }
  .register-form-panel { padding: 24px; }
  .register-form-panel { border-left: 0; }
  .support-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .support-report-grid { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; align-items: stretch; }
  .page-header .btn { width: 100%; justify-content: center; }
  .action-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .action-buttons .btn { width: 100%; justify-content: center; }
  .modal-overlay { padding: 14px; }
  .modal {
    width: 100%;
    max-height: calc(100vh - 28px);
    overflow: auto;
    border-radius: 18px;
  }
  .topbar { padding: 12px 14px; }
  .topbar-actions { gap: 8px; }
  .user-info { gap: 8px; }
  .user-name { max-width: 84px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .form-input, .btn { font-size: 16px; }
}

@media (max-width: 560px) {
  .devices-grid { grid-template-columns: 1fr; }
  .telemetry-cards { grid-template-columns: 1fr; }
  .device-header-details { grid-template-columns: 1fr; }
  .topbar-title { font-size: 1.0rem; }
  .user-name { display: none; }
  .payload-preview { max-width: 260px; }
  .modal-footer { flex-direction: column; align-items: stretch; }
  .settings-grid { grid-template-columns: 1fr; }
  .settings-actions { flex-direction: column; align-items: stretch; }
  .support-grid { grid-template-columns: 1fr; }
  .support-report-actions { justify-content: stretch; }
  .support-report-actions .btn { width: 100%; }
  .section-header { align-items: flex-start; flex-direction: column; }
  .mobile-stack-table thead { display: none; }
  .mobile-stack-table tbody tr {
    display: block;
    border: 1px solid color-mix(in srgb, var(--glass-border) 70%, transparent);
    border-radius: 14px;
    margin: 0 0 10px;
    padding: 8px 6px;
    background: color-mix(in srgb, var(--glass-bg) 85%, transparent);
  }
  .mobile-stack-table tbody td {
    display: grid;
    gap: 6px;
    border-bottom: 0;
    padding: 8px 10px 10px;
  }
  .mobile-stack-table tbody td::before {
    content: attr(data-label);
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-muted);
  }
  .mobile-stack-table .empty-row td::before,
  .mobile-stack-table .loading-row td::before { content: none; }
  .action-buttons { grid-template-columns: 1fr; }
  .main-content { padding: 14px; }
  .content-section { padding: 14px; }
  .topbar-actions { margin-left: auto; }
  .user-info { padding: 6px 8px; }
  .api-key-display { align-items: stretch; }
  .api-key-display code { flex-basis: 100%; }
  .api-key-display .btn-icon { width: 100%; height: 40px; }
  .usage-code { font-size: 0.78rem; }
  .page-header .header-info { width: 100%; }
  .page-header .header-subtitle { line-height: 1.45; }
  .modal-overlay { padding: 10px; }
  .modal {
    max-height: calc(100vh - 20px);
    border-radius: 16px;
  }
  .modal-header, .modal-body, .modal-footer { padding-left: 12px; padding-right: 12px; }
  .topbar { position: sticky; top: 0; z-index: 20; backdrop-filter: blur(14px); }
}

@media (max-width: 820px) {
  .sidebar { display: none !important; }
  .mobile-menu-btn { display: none; }
  .main-wrapper { margin-left: 0; width: 100%; }
  .main-content {
    padding-bottom: calc(86px + env(safe-area-inset-bottom, 0px));
  }
  .mobile-bottom-nav {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(10px + env(safe-area-inset-bottom, 0px));
    z-index: 60;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
    gap: 6px;
    padding: 8px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    background: color-mix(in srgb, var(--glass-bg) 92%, transparent);
    box-shadow: 0 14px 34px rgba(2, 6, 23, 0.26);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
  }
  .mobile-bottom-nav .nav-item {
    min-height: 54px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    justify-items: center;
    align-content: center;
    text-align: center;
    padding: 6px 4px;
    margin: 0;
    width: 100%;
    gap: 4px;
    color: var(--color-muted);
    text-decoration: none;
    border: 1px solid transparent;
    transition: var(--transition-std);
  }
  .mobile-bottom-nav .nav-item svg {
    width: 18px;
    height: 18px;
    margin: 0 auto;
    display: block;
  }
  .mobile-bottom-nav .nav-item span {
    font-size: 0.68rem;
    font-weight: 800;
    line-height: 1;
    display: block;
    margin: 0;
  }
  .mobile-bottom-nav .nav-item.active {
    color: var(--fg-app);
    background: var(--sidebar-active);
    border-color: var(--glass-border);
  }
  .mobile-overlay { display: none !important; }
}

/* Simple animation hooks used in templates */
.fade-in-up { animation: fadeUp 600ms cubic-bezier(0.2, 0.8, 0.2, 1) both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }