/* =========================================
   ServiceIQ — Global Design System
   ========================================= */

:root {
  /* Core colors — LIGHT default */
  --clr-bg: #f5f7fa;
  --clr-bg-2: #edf0f5;
  --clr-bg-3: #e4e8ee;
  --clr-surface: #ffffff;
  --clr-surface-2: #f0f2f5;
  --clr-border: rgba(0,0,0,0.08);
  --clr-border-2: rgba(0,0,0,0.14);

  /* Brand */
  --clr-primary: #5b5df0;
  --clr-primary-light: #6366f1;
  --clr-primary-dark: #4338ca;
  --clr-secondary: #7c3aed;
  --clr-accent: #059669;
  --clr-accent-2: #d97706;
  --clr-danger: #e11d48;
  --clr-warning: #d97706;
  --clr-success: #059669;

  /* Text */
  --clr-text: #1e293b;
  --clr-text-muted: #475569;
  --clr-text-dim: #94a3b8;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #5b5df0, #7c3aed);
  --grad-accent: linear-gradient(135deg, #059669, #0284c7);
  --grad-danger: linear-gradient(135deg, #e11d48, #db2777);
  --grad-gold: linear-gradient(135deg, #d97706, #ea580c);
  --grad-surface: linear-gradient(135deg, #ffffff, #f0f2f5);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --shadow-primary: 0 4px 20px rgba(91,93,240,0.2);
  --shadow-glow: 0 0 30px rgba(91,93,240,0.08);

  /* Overlay */
  --clr-overlay: rgba(0,0,0,0.3);
  --clr-hover-tint: rgba(0,0,0,0.03);
  --clr-hover-tint-2: rgba(0,0,0,0.02);
  --clr-hover-active: rgba(91,93,240,0.06);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Fonts */
  --font-base: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* =========================================
   Dark Theme Override
   ========================================= */
:root[data-theme="dark"] {
  --clr-bg: #080b14;
  --clr-bg-2: #0d1220;
  --clr-bg-3: #131929;
  --clr-surface: #161d2e;
  --clr-surface-2: #1c2438;
  --clr-border: rgba(255,255,255,0.07);
  --clr-border-2: rgba(255,255,255,0.12);

  --clr-primary: #6366f1;
  --clr-primary-light: #818cf8;
  --clr-primary-dark: #4f46e5;
  --clr-secondary: #8b5cf6;
  --clr-accent: #06d6a0;
  --clr-accent-2: #f59e0b;
  --clr-danger: #f43f5e;
  --clr-warning: #f59e0b;
  --clr-success: #10b981;

  --clr-text: #f1f5f9;
  --clr-text-muted: #94a3b8;
  --clr-text-dim: #64748b;

  --grad-primary: linear-gradient(135deg, #6366f1, #8b5cf6);
  --grad-accent: linear-gradient(135deg, #06d6a0, #0ea5e9);
  --grad-danger: linear-gradient(135deg, #f43f5e, #ec4899);
  --grad-gold: linear-gradient(135deg, #f59e0b, #f97316);
  --grad-surface: linear-gradient(135deg, #161d2e, #1c2438);

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.5);
  --shadow-primary: 0 8px 32px rgba(99,102,241,0.3);
  --shadow-glow: 0 0 40px rgba(99,102,241,0.15);

  --clr-overlay: rgba(0,0,0,0.6);
  --clr-hover-tint: rgba(255,255,255,0.04);
  --clr-hover-tint-2: rgba(255,255,255,0.03);
  --clr-hover-active: rgba(99,102,241,0.06);
}

/* Smooth theme transition */
body,
.sidebar,
.app-header,
.app-main,
.login-page,
.login-left,
.login-right,
.login-card,
.card,
.kpi-card,
.toast,
.modal,
.tab-bar,
.action-card,
.customer-card,
.header-search,
.header-icon-btn,
.nav-item,
.btn,
.input,
.badge {
  transition:
    background-color 0.35s ease,
    border-color 0.35s ease,
    color 0.35s ease,
    box-shadow 0.35s ease;
}

/* =========================================
   Theme Toggle Button
   ========================================= */
.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  flex-shrink: 0;
}
.theme-toggle:hover {
  color: var(--clr-text);
  border-color: var(--clr-border-2);
  background: var(--clr-surface);
}
.theme-toggle .icon-sun,
.theme-toggle .icon-moon { transition: opacity 0.25s ease, transform 0.3s ease; position: absolute; }
/* Light default: sun visible, moon hidden */
.theme-toggle .icon-sun { opacity: 1; transform: rotate(0deg) scale(1); }
.theme-toggle .icon-moon { opacity: 0; transform: rotate(90deg) scale(0.6); }
/* Dark mode: moon visible, sun hidden */
:root[data-theme="dark"] .theme-toggle .icon-sun { opacity: 0; transform: rotate(-90deg) scale(0.6); }
:root[data-theme="dark"] .theme-toggle .icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-base);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg-2); }
::-webkit-scrollbar-thumb { background: var(--clr-surface-2); border-radius: var(--radius-full); }

/* Typography */
h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; line-height: 1.15; }
h2 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 600; }
h4 { font-size: 0.95rem; font-weight: 600; }
p { color: var(--clr-text-muted); font-size: 0.95rem; }

.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-gold {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Utility classes */
.hidden { display: none !important; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Tags / Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.badge-primary { background: rgba(91,93,240,0.12); color: var(--clr-primary); border: 1px solid rgba(91,93,240,0.2); }
.badge-success { background: rgba(5,150,105,0.1); color: var(--clr-success); border: 1px solid rgba(5,150,105,0.2); }
.badge-warning { background: rgba(217,119,6,0.1); color: var(--clr-warning); border: 1px solid rgba(217,119,6,0.2); }
.badge-danger  { background: rgba(225,29,72,0.1); color: var(--clr-danger); border: 1px solid rgba(225,29,72,0.2); }
.badge-purple  { background: rgba(124,58,237,0.1); color: var(--clr-secondary); border: 1px solid rgba(124,58,237,0.2); }
.badge-cyan    { background: rgba(5,150,105,0.1); color: var(--clr-accent); border: 1px solid rgba(5,150,105,0.2); }
.badge-gray    { background: var(--clr-surface-2); color: var(--clr-text-muted); border: 1px solid var(--clr-border); }

/* Cards */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.card:hover { border-color: var(--clr-border-2); }

.card-glass {
  background: var(--clr-surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-family: var(--font-base);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 40px rgba(99,102,241,0.4); }
.btn-secondary {
  background: var(--clr-surface-2);
  color: var(--clr-text);
  border: 1px solid var(--clr-border-2);
}
.btn-secondary:hover { background: var(--clr-bg-3); border-color: var(--clr-primary); }
.btn-ghost {
  background: transparent;
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
}
.btn-ghost:hover { color: var(--clr-text); border-color: var(--clr-border-2); background: var(--clr-surface); }
.btn-danger {
  background: linear-gradient(135deg, rgba(244,63,94,0.2), rgba(244,63,94,0.1));
  color: #fb7185;
  border: 1px solid rgba(244,63,94,0.3);
}
.btn-danger:hover { background: linear-gradient(135deg, rgba(244,63,94,0.3), rgba(244,63,94,0.2)); }
.btn-sm { padding: 5px 12px; font-size: 0.8rem; }
.btn-xs { padding: 3px 8px; font-size: 0.75rem; }
.btn-lg { padding: 12px 28px; font-size: 1rem; }
.btn-icon { padding: 7px; }
.btn-icon:hover { color: var(--clr-primary-light); }

/* Inputs */
.input {
  width: 100%;
  background: var(--clr-bg-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-family: var(--font-base);
  font-size: 0.875rem;
  color: var(--clr-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}
.input:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.12);
}
.input::placeholder { color: var(--clr-text-dim); }

select.input { cursor: pointer; }

/* Progress */
.progress-bar {
  height: 4px;
  background: var(--clr-bg-2);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.8s ease;
}

/* Spinner */
@keyframes spin { to { transform: rotate(360deg); } }
.spin { animation: spin 0.8s linear infinite; }

/* Fade in */
@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.fade-in { animation: fadeIn 0.4s ease forwards; }

/* Pulse glow */
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(99,102,241,0.2); }
  50% { box-shadow: 0 0 40px rgba(99,102,241,0.4); }
}

/* Status dot */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-dot.online { background: var(--clr-success); box-shadow: 0 0 8px rgba(16,185,129,0.5); }
.status-dot.busy { background: var(--clr-warning); }
.status-dot.offline { background: var(--clr-text-dim); }

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

/* Avatar */
.avatar {
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
  background: var(--grad-primary);
  color: #fff;
}
.avatar-sm { width: 30px; height: 30px; font-size: 0.7rem; }
.avatar-md { width: 38px; height: 38px; font-size: 0.85rem; }
.avatar-lg { width: 48px; height: 48px; font-size: 1rem; }
.avatar-xl { width: 64px; height: 64px; font-size: 1.3rem; }

/* KPI Card */
.kpi-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}
.kpi-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-primary);
}
.kpi-card:hover { border-color: var(--clr-border-2); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.kpi-value { font-size: 2rem; font-weight: 800; line-height: 1; margin-bottom: 4px; }
.kpi-label { font-size: 0.8rem; color: var(--clr-text-muted); font-weight: 500; }
.kpi-trend { font-size: 0.75rem; font-weight: 600; margin-top: 8px; }
.kpi-trend.up { color: var(--clr-success); }
.kpi-trend.down { color: var(--clr-danger); }

/* Tooltip */
[data-tooltip] { position: relative; }
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--clr-bg-3);
  border: 1px solid var(--clr-border-2);
  color: var(--clr-text);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 100;
}
[data-tooltip]:hover::after { opacity: 1; }

/* Tag */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: var(--clr-bg-3);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  color: var(--clr-text-muted);
  font-family: var(--font-mono);
}

/* Score ring */
.score-ring {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.score-ring svg { transform: rotate(-90deg); }
.score-ring .score-value {
  position: absolute;
  font-size: 0.85rem;
  font-weight: 700;
}

/* Animations */
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, var(--clr-surface) 25%, var(--clr-surface-2) 50%, var(--clr-surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* Notification dot */
.notif-dot {
  width: 8px;
  height: 8px;
  background: var(--clr-danger);
  border-radius: 50%;
  border: 2px solid var(--clr-bg);
  position: absolute;
  top: 2px;
  right: 2px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--clr-overlay);
  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(--clr-surface);
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 560px;
  width: 100%;
  animation: scaleIn 0.2s ease;
  box-shadow: var(--shadow-lg);
}

/* Sidebar layout vars */
.app-layout {
  display: flex;
  min-height: 100vh;
}