/* Design Tokens — University operations / enterprise dark */
:root {
  /* Layered navy/slate palette */
  --bg: #07111f;
  --surface: #0f1b2d;
  --surface-2: #132238;
  --smaca-sidebar: #0b1728;
  --border: rgba(255, 255, 255, 0.06);
  --text: #eef4fc;
  --text-secondary: #a8b9d4;
  --muted: #7a8ea8;
  --accent: #4b8df8;
  --accent-2: #7eb3ff;
  
  /* Semantic Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  
  /* Spacing Scale (8px rhythm) */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;     /* 48px */
  
  /* Border Radius */
  --r-sm: 0.375rem;   /* 6px */
  --r-md: 0.5rem;     /* 8px */
  --r-lg: 0.75rem;    /* 12px */
  --r-xl: 1rem;       /* 16px */
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 0.9375rem; /* 15px */
  --font-size-md: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Layout */
  --sidebar-width: 260px;

  /* Enterprise UI tokens */
  --smaca-navy-950: #07111f;
  --smaca-navy-900: #0b1728;
  --smaca-navy-850: #0f1b2d;
  --smaca-navy-800: #132238;
  --smaca-panel-border: rgba(255, 255, 255, 0.06);
  --smaca-panel-bg: #0f1b2d;
  --smaca-glow-soft: none;
  --smaca-glow-iaq: none;
  --smaca-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --smaca-transition-fast: 0.16s var(--smaca-ease);
  --smaca-transition-med: 0.2s var(--smaca-ease);
  --smaca-section-gap: var(--space-4);
  --smaca-card-pad: var(--space-3);
  --smaca-hero-pad: var(--space-3);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.22);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.28);

  /* Atmospheric backgrounds */
  --smaca-bg-base: #07111f;
  --smaca-bg-atmosphere:
    radial-gradient(circle at top left, rgba(40, 90, 180, 0.1), transparent 30%),
    radial-gradient(circle at 70% 30%, rgba(0, 180, 170, 0.05), transparent 28%),
    radial-gradient(ellipse 85% 55% at 50% 100%, rgba(255, 140, 60, 0.035), transparent 42%),
    #07111f;
  --smaca-card-bg: linear-gradient(180deg, rgba(18, 31, 50, 0.96), rgba(12, 23, 39, 0.96));
  --smaca-section-bg: linear-gradient(180deg, rgba(18, 32, 52, 0.92), rgba(12, 23, 39, 0.94));
  --smaca-chart-well-bg: linear-gradient(180deg, rgba(14, 26, 42, 0.88), rgba(9, 18, 32, 0.92));

  /* Clay + restrained glass */
  --smaca-glass-bg: linear-gradient(180deg, rgba(18, 31, 50, 0.96), rgba(12, 23, 39, 0.96));
  --smaca-glass-bg-elevated: linear-gradient(180deg, rgba(22, 38, 60, 0.96), rgba(14, 26, 42, 0.96));
  --smaca-glass-blur: blur(10px);
  --smaca-surface-clay: #0a1626;
  --smaca-surface-clay-raised: #101d30;
  --smaca-surface-clay-soft: #15263c;
  --smaca-border-clay: rgba(255, 255, 255, 0.07);
  --smaca-shadow-clay:
    0 8px 24px rgba(0, 0, 0, 0.22),
    0 10px 30px rgba(0, 0, 0, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  --smaca-shadow-clay-hover:
    0 10px 28px rgba(0, 0, 0, 0.26),
    0 14px 36px rgba(0, 0, 0, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --smaca-shadow-section: 0 10px 30px rgba(0, 0, 0, 0.2);
  --smaca-shadow-clay-inset:
    inset 0 2px 6px rgba(0, 0, 0, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  --smaca-radius-clay: 18px;
  --smaca-radius-clay-sm: 14px;
  --smaca-clay-transition:
    border-color var(--smaca-transition-fast),
    box-shadow var(--smaca-transition-fast),
    transform var(--smaca-transition-fast),
    background var(--smaca-transition-fast);

  /* Module accents — meaningful highlights only */
  --smaca-accent-iaq: #00b4aa;
  --smaca-accent-iaq-soft: rgba(0, 180, 170, 0.14);
  --smaca-accent-iaq-hero: linear-gradient(90deg, rgba(0, 180, 170, 0.2), rgba(0, 180, 170, 0.05) 42%, rgba(20, 30, 50, 0.02));
  --smaca-accent-occupancy: #ffaa46;
  --smaca-accent-occupancy-soft: rgba(255, 170, 70, 0.16);
  --smaca-accent-occupancy-hero: linear-gradient(90deg, rgba(255, 170, 70, 0.18), rgba(255, 170, 70, 0.03) 40%, rgba(20, 30, 50, 0.02));
  --smaca-accent-environmental: #ff7828;
  --smaca-accent-environmental-soft: rgba(255, 120, 40, 0.16);
  --smaca-accent-environmental-hero: linear-gradient(90deg, rgba(255, 120, 40, 0.18), rgba(255, 120, 40, 0.03) 40%, rgba(20, 30, 50, 0.02));
  --smaca-accent-energy: #e8c04a;
  --smaca-accent-energy-soft: rgba(232, 192, 74, 0.16);
  --smaca-accent-energy-hero: linear-gradient(90deg, rgba(232, 192, 74, 0.18), rgba(232, 192, 74, 0.03) 40%, rgba(20, 30, 50, 0.02));
  --smaca-accent-connectivity: #5b9fd4;
  --smaca-accent-connectivity-soft: rgba(91, 159, 212, 0.16);
  --smaca-accent-connectivity-hero: linear-gradient(90deg, rgba(91, 159, 212, 0.18), rgba(91, 159, 212, 0.03) 40%, rgba(20, 30, 50, 0.02));
  --smaca-accent-ai: #9b87f5;
  --smaca-accent-ai-soft: rgba(155, 135, 245, 0.16);
  --smaca-accent-ai-hero: linear-gradient(90deg, rgba(155, 135, 245, 0.18), rgba(155, 135, 245, 0.03) 40%, rgba(20, 30, 50, 0.02));

  /* Corner ambient tints (important KPI cards only) */
  --smaca-ambient-iaq: radial-gradient(circle at top right, rgba(0, 220, 200, 0.09), transparent 32%);
  --smaca-ambient-occupancy: radial-gradient(circle at top right, rgba(255, 170, 70, 0.09), transparent 32%);
  --smaca-ambient-environmental: radial-gradient(circle at top right, rgba(255, 120, 40, 0.09), transparent 32%);
  --smaca-ambient-energy: radial-gradient(circle at top right, rgba(232, 192, 74, 0.09), transparent 32%);
  --smaca-ambient-connectivity: radial-gradient(circle at top right, rgba(91, 159, 212, 0.08), transparent 32%);

  /* Status pill system */
  --smaca-status-good-bg: rgba(20, 200, 140, 0.14);
  --smaca-status-good-text: #72f0bc;
  --smaca-status-warn-bg: rgba(255, 180, 70, 0.14);
  --smaca-status-warn-text: #f0c878;
  --smaca-status-danger-bg: rgba(255, 90, 90, 0.14);
  --smaca-status-danger-text: #f0a0a0;
}

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

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text);
  background-color: var(--bg);
  overflow-x: hidden;
}

/* Global responsive safety */
img,
svg,
video,
canvas,
iframe {
  max-width: 100%;
}

table {
  max-width: 100%;
}

*,
*::before,
*::after {
  min-width: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--text);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-2);
}

:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

::selection {
  background-color: var(--accent);
  color: white;
}

/* Common Components */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card__header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2) var(--space-3);
}

.card__header .card__subtitle {
  flex: 1 1 100%;
  width: 100%;
  margin: 0;
  hyphens: manual;
  -webkit-hyphens: manual;
  overflow-wrap: break-word;
  word-break: normal;
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text);
  margin: 0;
}

.card__body {
  padding: var(--space-6);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--smaca-glass-bg);
  color: var(--text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--smaca-clay-transition);
  text-decoration: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.btn:hover {
  background: var(--surface-2);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.btn--primary:hover {
  background: var(--accent-2);
}

.btn--secondary {
  background: var(--surface-2);
  border-color: var(--border);
}

.btn--ghost {
  background: transparent;
  border-color: transparent;
}

.btn--sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
}

.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--surface);
  color: var(--text);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  transition: all 0.2s;
}

.input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input::placeholder {
  color: var(--muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  backdrop-filter: blur(6px);
}

.badge--sm {
  padding: 2px var(--space-2);
  font-size: 10px;
}

.badge--success {
  background: var(--smaca-status-good-bg);
  color: var(--smaca-status-good-text);
  border-color: rgba(114, 240, 188, 0.2);
}

.badge--warning {
  background: var(--smaca-status-warn-bg);
  color: var(--smaca-status-warn-text);
  border-color: rgba(240, 200, 120, 0.2);
}

.badge--danger {
  background: var(--smaca-status-danger-bg);
  color: var(--smaca-status-danger-text);
  border-color: rgba(240, 160, 160, 0.2);
}

.badge--info {
  background: rgba(91, 159, 212, 0.14);
  color: #9ec8ef;
  border-color: rgba(158, 200, 239, 0.2);
}

.badge--muted {
  background: rgba(111, 129, 157, 0.12);
  color: var(--text-secondary);
  border-color: rgba(255, 255, 255, 0.06);
}

/* Utilities */
.muted {
  color: var(--muted);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.cluster {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Legacy Navbar (for sensors, alerts, etc.) */
.layout-navbar {
  display: none; /* Hidden by default, shown only if needed */
}

.c-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  gap: var(--space-4);
}

.c-navbar__brand {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--text);
}

.c-navbar__search {
  flex: 1;
  max-width: 400px;
}

.c-navbar__search-input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--surface-2);
  color: var(--text);
  font-size: var(--font-size-sm);
}

.c-navbar__search-input:focus {
  outline: none;
  border-color: var(--accent);
}

.c-navbar__user {
  position: relative;
}

.c-navbar__user-chip {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: background 0.2s;
}

.c-navbar__user-chip:hover {
  background: var(--accent-2);
}

.c-navbar__user-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
  min-width: 180px;
  padding: var(--space-2);
  display: none;
  z-index: 1000;
}

.c-navbar__user-menu.is-open {
  display: block;
}

.c-navbar__user-menu-item {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--r-sm);
  color: var(--text);
  font-size: var(--font-size-sm);
  transition: background 0.2s;
  text-decoration: none;
}

.c-navbar__user-menu-item:hover {
  background: var(--surface-2);
}

.c-navbar__user-menu-item--danger {
  color: var(--danger);
}

/* Legacy Field & Label */
.c-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.c-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text);
}

.c-help {
  font-size: var(--font-size-xs);
  color: var(--muted);
  margin-top: var(--space-1);
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
}

/* Auth pages: validation & flash */
.auth-error {
  margin-bottom: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--r-md);
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: var(--text);
  font-size: var(--font-size-sm);
}

.auth-error-list {
  margin: 0;
  padding-left: 1.25rem;
}

.auth-error-list li + li {
  margin-top: var(--space-1);
}

.auth-success {
  margin-bottom: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--r-md);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: var(--text);
  font-size: var(--font-size-sm);
}

.field-error {
  margin: 0;
  font-size: var(--font-size-xs);
  color: var(--danger);
}

.form-input.is-invalid {
  color: var(--text);
}

.input-wrapper:has(.form-input.is-invalid) {
  border-color: rgba(239, 68, 68, 0.55);
}