/* ═══════════════════════════════════════════════════════════════════
   HOME AUTOMATION — DESIGN SYSTEM
   main.css: Tokens, Reset, Typography, Utilities, Glassmorphism
   ═══════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Orbitron:wght@700;900&display=swap');
@import url('https://fonts.googleapis.com/icon?family=Material+Icons+Round');

/* ── CSS Custom Properties ── */
:root {
  /* Dark theme (default) */
  --bg-primary: #0a0e1a;
  --bg-secondary: #0d1224;
  --bg-tertiary: #111827;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);

  --surface-1: rgba(255, 255, 255, 0.06);
  --surface-2: rgba(255, 255, 255, 0.10);
  --surface-3: rgba(255, 255, 255, 0.14);

  --border-1: rgba(255, 255, 255, 0.08);
  --border-2: rgba(255, 255, 255, 0.14);
  --border-glow: rgba(99, 179, 237, 0.3);

  --text-primary: #f0f4ff;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-muted: #475569;

  /* Brand Colors */
  --accent-blue: #3b82f6;
  --accent-blue-light: #60a5fa;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --accent-violet: #7c3aed;
  --accent-green: #10b981;
  --accent-orange: #f59e0b;
  --accent-red: #ef4444;
  --accent-pink: #ec4899;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  --gradient-danger: linear-gradient(135deg, #ef4444 0%, #f59e0b 100%);
  --gradient-bg: linear-gradient(135deg, #0a0e1a 0%, #0d1224 50%, #111020 100%);
  --gradient-card: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow-blue: 0 0 30px rgba(59, 130, 246, 0.3);
  --shadow-glow-green: 0 0 30px rgba(16, 185, 129, 0.3);

  /* Sidebar */
  --sidebar-width: 260px;
  --sidebar-collapsed: 70px;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
}

/* Light theme */
[data-theme="light"] {
  --bg-primary: #f0f4ff;
  --bg-secondary: #e8edf8;
  --bg-tertiary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-card-hover: rgba(255, 255, 255, 0.95);

  --surface-1: rgba(0, 0, 0, 0.04);
  --surface-2: rgba(0, 0, 0, 0.06);
  --surface-3: rgba(0, 0, 0, 0.09);

  --border-1: rgba(0, 0, 0, 0.08);
  --border-2: rgba(0, 0, 0, 0.14);

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-tertiary: #64748b;
  --text-muted: #94a3b8;

  --gradient-bg: linear-gradient(135deg, #e8edf8 0%, #f0f4ff 50%, #ede9fe 100%);
  --gradient-card: linear-gradient(135deg, rgba(59, 130, 246, 0.06) 0%, rgba(139, 92, 246, 0.03) 100%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.15);
}

/* ── Reset ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  outline: none;
}

img { max-width: 100%; }
input, select, textarea {
  font-family: inherit;
  outline: none;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-2);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

/* ── Typography ── */
.text-xs   { font-size: 0.75rem; }
.text-sm   { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg   { font-size: 1.125rem; }
.text-xl   { font-size: 1.25rem; }
.text-2xl  { font-size: 1.5rem; }
.text-3xl  { font-size: 1.875rem; }
.text-4xl  { font-size: 2.25rem; }

.font-light    { font-weight: 300; }
.font-regular  { font-weight: 400; }
.font-medium   { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold     { font-weight: 700; }
.font-extrabold { font-weight: 800; }

.font-orbitron { font-family: 'Orbitron', sans-serif; }

.text-primary   { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted     { color: var(--text-muted); }
.text-accent    { color: var(--accent-blue); }
.text-success   { color: var(--accent-green); }
.text-danger    { color: var(--accent-red); }
.text-warning   { color: var(--accent-orange); }
.text-gradient  {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Glassmorphism Card ── */
.glass {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-lg);
}

.glass-strong {
  background: var(--surface-2);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
  border-radius: inherit;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card:hover::before { opacity: 1; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.1);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after { opacity: 1; }
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 25px rgba(59, 130, 246, 0.45);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--gradient-success);
  color: white;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-danger {
  background: var(--gradient-danger);
  color: white;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-ghost {
  background: var(--surface-1);
  color: var(--text-primary);
  border: 1px solid var(--border-1);
}

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

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
  background: var(--surface-1);
  color: var(--text-secondary);
  border: 1px solid var(--border-1);
}

.btn-icon:hover {
  background: var(--surface-2);
  color: var(--text-primary);
}

.btn-sm { padding: 7px 14px; font-size: 0.8rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }

/* ── Form Elements ── */
.form-group { margin-bottom: var(--space-lg); }

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.form-input:focus {
  border-color: var(--accent-blue);
  background: var(--surface-2);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

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

.form-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='%2394a3b8'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 20px;
  padding-right: 40px;
  transition: all var(--transition-fast);
}

.form-select:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-select option { background: var(--bg-tertiary); }

/* ── Toggle Switch ── */
.toggle-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.toggle {
  position: relative;
  width: 52px;
  height: 28px;
  flex-shrink: 0;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  left: 3px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--text-muted);
  border-radius: 50%;
  transition: all var(--transition-normal);
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.toggle input:checked + .toggle-slider {
  background: var(--gradient-primary);
  border-color: transparent;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(24px) translateY(-50%);
  background: white;
}

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.badge-danger  { background: rgba(239, 68, 68, 0.15);  color: var(--accent-red); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--accent-orange); }
.badge-blue    { background: rgba(59, 130, 246, 0.15);  color: var(--accent-blue-light); }
.badge-purple  { background: rgba(139, 92, 246, 0.15);  color: var(--accent-purple); }

/* ── Status Dot ── */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.online  { background: var(--accent-green); box-shadow: 0 0 8px var(--accent-green); animation: pulse-green 2s infinite; }
.status-dot.offline { background: var(--accent-red); }
.status-dot.idle    { background: var(--accent-orange); }

@keyframes pulse-green {
  0%, 100% { box-shadow: 0 0 8px rgba(16, 185, 129, 0.5); }
  50% { box-shadow: 0 0 16px rgba(16, 185, 129, 0.9); }
}

/* ── Layout Utilities ── */
.flex        { display: flex; }
.flex-col    { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.gap-sm  { gap: var(--space-sm); }
.gap-md  { gap: var(--space-md); }
.gap-lg  { gap: var(--space-lg); }
.w-full  { width: 100%; }
.h-full  { height: 100%; }
.flex-1  { flex: 1; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-lg); }

/* ── Animated Background ── */
.animated-bg {
  background: var(--gradient-bg);
  position: relative;
  overflow: hidden;
}

.animated-bg::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(6, 182, 212, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  animation: bg-shift 20s ease-in-out infinite alternate;
}

@keyframes bg-shift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(2%, 2%) scale(1.05); }
}

/* ── Page Content ── */
.page-content {
  position: relative;
  z-index: 1;
}

/* ── Loading Spinner ── */
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-2);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm { width: 18px; height: 18px; border-width: 2px; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Material Icons ── */
.material-icons-round {
  font-size: 20px;
  line-height: 1;
  vertical-align: middle;
  user-select: none;
}

.icon-lg { font-size: 28px; }
.icon-xl { font-size: 36px; }
.icon-2xl { font-size: 48px; }

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--border-1);
  margin: var(--space-lg) 0;
}

/* ── Responsive ── */
@media (max-width: 1200px) {
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4, .grid-5 {
    grid-template-columns: 1fr;
  }
}

/* ── Fade In Animation ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

.animate-fadeInUp { animation: fadeInUp 0.4s ease both; }
.animate-fadeIn   { animation: fadeIn 0.3s ease both; }
.animate-scaleIn  { animation: scaleIn 0.3s ease both; }

/* Staggered animations */
.stagger-1 { animation-delay: 0.05s; }
.stagger-2 { animation-delay: 0.10s; }
.stagger-3 { animation-delay: 0.15s; }
.stagger-4 { animation-delay: 0.20s; }
.stagger-5 { animation-delay: 0.25s; }

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  animation: fadeIn 0.2s ease;
}

.modal {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: scaleIn 0.25s ease;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close:hover { background: var(--surface-2); color: var(--text-primary); }

/* ── Tooltip ── */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-2);
  color: var(--text-primary);
  font-size: 0.75rem;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 100;
  box-shadow: var(--shadow-md);
}

[data-tooltip]:hover::after { opacity: 1; }

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-muted);
}

.empty-state .material-icons-round {
  font-size: 64px;
  margin-bottom: var(--space-md);
  opacity: 0.4;
}

/* ── Page Header ── */
.page-header {
  margin-bottom: var(--space-xl);
}

.page-header h1 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}