/* ==========================================================================
   Tech Surya Biometric Attendance Dashboard - Modern Light & Dark Design System
   ========================================================================== */

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

:root {
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;

  /* Color Palette - Modern Crisp Light Mode (Default) */
  --bg-base: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-glass: rgba(255, 255, 255, 0.92);
  --border-subtle: #e2e8f0;
  --border-focus: rgba(2, 132, 199, 0.45);

  /* Brand Accents */
  --primary: #0284c7;         /* Radiant Sky Blue */
  --primary-glow: rgba(2, 132, 199, 0.16);
  --primary-hover: #0369a1;
  --indigo: #6366f1;
  --indigo-glow: rgba(99, 102, 241, 0.16);
  --success: #059669;         /* Crisp Emerald */
  --success-glow: rgba(5, 150, 105, 0.16);
  --warning: #d97706;         /* Warm Amber */
  --danger: #dc2626;          /* Crimson Red */
  --danger-glow: rgba(220, 38, 38, 0.16);

  /* Text Colors */
  --text-main: #0f172a;       /* Deep slate - maximum readability */
  --text-muted: #475569;
  --text-dim: #64748b;
  --text-inverse: #ffffff;

  /* Elevations & Layered Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 14px -1px rgba(15, 23, 42, 0.07), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 30px -4px rgba(15, 23, 42, 0.1), 0 4px 12px -2px rgba(15, 23, 42, 0.05);
  --shadow-glow: 0 4px 20px rgba(2, 132, 199, 0.15);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark Mode Overrides */
[data-theme="dark"] {
  --bg-base: #0a0e17;
  --bg-surface: #111827;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-glass: rgba(10, 14, 23, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(6, 182, 212, 0.5);

  --primary: #06b6d4;
  --primary-glow: rgba(6, 182, 212, 0.25);
  --primary-hover: #0891b2;
  --indigo: #6366f1;
  --indigo-glow: rgba(99, 102, 241, 0.25);
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.25);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --text-inverse: #0b0f19;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.5), 0 0 20px var(--primary-glow);
  --shadow-glow: 0 0 25px var(--primary-glow);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-base);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    radial-gradient(at 0% 0%, rgba(2, 132, 199, 0.05) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(99, 102, 241, 0.04) 0px, transparent 50%),
    radial-gradient(at 50% 20%, rgba(241, 245, 249, 0.6) 0px, transparent 100%);
  background-attachment: fixed;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

[data-theme="dark"] body {
  background-image: 
    radial-gradient(at 0% 0%, rgba(6, 182, 212, 0.08) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(99, 102, 241, 0.08) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(15, 23, 42, 0.6) 0px, transparent 100%);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}
[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: #334155;
}
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

/* Header & Navbar */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 2rem;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.header-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.header-top-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex: 1;
}

.header-status-bar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.header-top-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.header-live-poll {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  cursor: pointer;
}

.device-specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
}

.brand-logo-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  padding: 4px 12px;
  border-radius: var(--radius-md);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08), 0 0 12px rgba(255, 128, 0, 0.1);
  border: 1px solid var(--border-subtle);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
}

.brand-logo-badge:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(255, 102, 0, 0.25);
}

.brand-logo-img {
  height: 38px;
  width: auto;
  display: block;
  object-fit: contain;
}

.brand-divider {
  width: 1px;
  height: 28px;
  background: var(--border-subtle);
}

.brand-text h1 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text-main), #334155);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

[data-theme="dark"] .brand-text h1 {
  background: linear-gradient(to right, #fff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text p {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.2;
}

/* Hardware Status Pill */
.device-pill {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.4rem 0.875rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  box-shadow: var(--shadow-sm);
}

.status-dot-container {
  position: relative;
  width: 10px;
  height: 10px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
}

.status-pulse {
  position: absolute;
  top: 0;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse-ring 2s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

.status-dot.offline, .status-pulse.offline {
  background: var(--danger);
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.5); opacity: 0; }
}

.device-meta-text {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  color: var(--text-main);
  font-weight: 500;
}

.device-ip-tag {
  color: var(--primary);
  font-family: monospace;
}

.latency-tag {
  background: rgba(0, 0, 0, 0.05);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--text-dim);
}

[data-theme="dark"] .latency-tag {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
}

/* Header Action Controls */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #0369a1);
  color: #fff;
  box-shadow: 0 2px 10px var(--primary-glow);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover), #0284c7);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--primary-glow);
}

.btn-secondary {
  background: var(--bg-surface);
  border-color: var(--border-subtle);
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: var(--text-main);
}
[data-theme="dark"] .btn-secondary {
  background: rgba(30, 41, 59, 0.6);
  border-color: var(--border-subtle);
  color: var(--text-main);
}
[data-theme="dark"] .btn-secondary:hover {
  background: rgba(51, 65, 85, 0.8);
  border-color: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.btn-outline {
  background: var(--bg-surface);
  border-color: var(--border-subtle);
  color: var(--text-muted);
}
.btn-outline:hover {
  background: #f8fafc;
  color: var(--primary);
  border-color: var(--primary);
}
[data-theme="dark"] .btn-outline {
  background: transparent;
}
[data-theme="dark"] .btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: var(--border-focus);
}

.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
}
.btn-success:hover {
  filter: brightness(1.05);
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8125rem;
}

.btn-icon {
  padding: 0.5rem;
  border-radius: var(--radius-md);
}

.spin-icon {
  animation: spin 1s linear infinite;
}
@keyframes spin {
  100% { transform: rotate(360deg); }
}

/* Nav Tabs */
.nav-tabs-container {
  max-width: 1440px;
  margin: 1.25rem auto 0;
  padding: 0 2rem;
}

.nav-tabs {
  display: flex;
  gap: 0.35rem;
  background: #f1f5f9;
  backdrop-filter: blur(8px);
  padding: 0.35rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  width: fit-content;
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .nav-tabs {
  background: rgba(17, 24, 39, 0.6);
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.6);
}
[data-theme="dark"] .tab-btn:hover {
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  background: #ffffff;
  color: var(--primary);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
  font-weight: 600;
}

[data-theme="dark"] .tab-btn.active {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.18), rgba(99, 102, 241, 0.18));
  color: #fff;
  border: 1px solid rgba(6, 182, 212, 0.3);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.tab-btn svg {
  width: 18px;
  height: 18px;
}

/* Main Content Area */
.main-content {
  max-width: 1440px;
  margin: 1.5rem auto 3rem;
  padding: 0 2rem;
}

.tab-panel {
  display: none;
  animation: fadeIn var(--transition-normal);
}
.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Cards & Surface */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card:hover {
  border-color: #cbd5e1;
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .card:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-subtitle {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* KPI Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(2, 132, 199, 0.25);
}

[data-theme="dark"] .kpi-card {
  background: linear-gradient(145deg, rgba(22, 31, 48, 0.8), rgba(15, 23, 42, 0.9));
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-color, var(--primary)), transparent);
}

.kpi-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.kpi-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
}

.kpi-icon-pill {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-color, var(--primary));
}

[data-theme="dark"] .kpi-icon-pill {
  background: rgba(255, 255, 255, 0.05);
}

.kpi-value {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.kpi-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Badges & Pills */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success {
  background: rgba(16, 185, 129, 0.12);
  color: #047857;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-primary {
  background: rgba(2, 132, 199, 0.12);
  color: #0284c7;
  border: 1px solid rgba(2, 132, 199, 0.25);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.12);
  color: #b45309;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.12);
  color: #b91c1c;
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.badge-neutral {
  background: #f1f5f9;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.badge-purple {
  background: rgba(168, 85, 247, 0.12);
  color: #7e22ce;
  border: 1px solid rgba(168, 85, 247, 0.25);
}

.badge-goal-met {
  background: rgba(16, 185, 129, 0.12);
  color: #047857;
  border: 1px solid rgba(16, 185, 129, 0.25);
  font-weight: 600;
}

.badge-goal-short {
  background: rgba(245, 158, 11, 0.12);
  color: #b45309;
  border: 1px solid rgba(245, 158, 11, 0.25);
  font-weight: 600;
}

.shift-tag, .lunch-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: monospace;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

.shift-tag {
  color: #0284c7;
  border: 1px solid rgba(2, 132, 199, 0.25);
  background: rgba(2, 132, 199, 0.08);
}

.lunch-tag {
  color: #b45309;
  border: 1px solid rgba(245, 158, 11, 0.25);
  background: rgba(245, 158, 11, 0.08);
}

/* Dark badge overrides */
[data-theme="dark"] .badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}
[data-theme="dark"] .badge-primary {
  background: rgba(6, 182, 212, 0.15);
  color: #38bdf8;
  border-color: rgba(6, 182, 212, 0.3);
}
[data-theme="dark"] .badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.3);
}
[data-theme="dark"] .badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.3);
}
[data-theme="dark"] .badge-neutral {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  border-color: transparent;
}
[data-theme="dark"] .badge-purple {
  background: rgba(168, 85, 247, 0.15);
  color: #c084fc;
  border-color: rgba(168, 85, 247, 0.3);
}
[data-theme="dark"] .badge-goal-met {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}
[data-theme="dark"] .badge-goal-short {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.3);
}
[data-theme="dark"] .shift-tag {
  color: #38bdf8;
  border-color: rgba(56, 189, 248, 0.25);
  background: rgba(56, 189, 248, 0.08);
}
[data-theme="dark"] .lunch-tag {
  color: #fbbf24;
  border-color: rgba(251, 191, 36, 0.25);
  background: rgba(251, 191, 36, 0.08);
}

/* Dashboard Grid Layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

/* Hourly Punch Distribution Chart */
.chart-container {
  height: 220px;
  display: flex;
  align-items: flex-end;
  gap: 6px;
  padding: 1.5rem 0 0.5rem;
  position: relative;
  border-bottom: 1px solid var(--border-subtle);
}

.bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
  position: relative;
}

.bar-pill {
  width: 100%;
  max-width: 24px;
  background: linear-gradient(180deg, var(--primary) 0%, rgba(2, 132, 199, 0.3) 100%);
  border-radius: 4px 4px 0 0;
  transition: all var(--transition-normal);
  cursor: pointer;
  min-height: 4px;
}

.bar-pill:hover {
  background: linear-gradient(180deg, #38bdf8 0%, var(--primary) 100%);
  box-shadow: 0 0 12px var(--primary-glow);
  transform: scaleY(1.05);
}

.bar-label {
  margin-top: 0.5rem;
  font-size: 0.6875rem;
  color: var(--text-dim);
}

.bar-tooltip {
  position: absolute;
  top: -30px;
  background: #0f172a;
  border: 1px solid var(--border-subtle);
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.bar-col:hover .bar-tooltip {
  opacity: 1;
  transform: translateY(0);
}

/* Activity Stream */
.activity-stream {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 440px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.activity-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: #f8fafc;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.activity-item:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

[data-theme="dark"] .activity-item {
  background: rgba(255, 255, 255, 0.02);
}
[data-theme="dark"] .activity-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

.activity-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0284c7, #6366f1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  flex-shrink: 0;
}

.activity-info h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
}

.activity-info p {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.activity-meta {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
}

.activity-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: monospace;
}

/* Filter Controls Toolbar */
.filter-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.input-field, .select-field {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: var(--text-main);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

[data-theme="dark"] .input-field, [data-theme="dark"] .select-field {
  background: rgba(15, 23, 42, 0.8);
  border-color: var(--border-subtle);
  color: var(--text-main);
}

.input-field:focus, .select-field:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.input-icon-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.input-icon-wrapper svg {
  position: absolute;
  left: 0.75rem;
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}

.input-icon-wrapper .input-field {
  padding-left: 2.25rem;
}

/* Data Table Styles */
.table-container,
.table-responsive {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--shadow-sm);
  width: 100%;
  max-width: 100%;
  position: relative;
}

.data-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.data-table th {
  background: #f8fafc;
  padding: 0.875rem 1.25rem;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-subtle);
}

[data-theme="dark"] .data-table th {
  background: rgba(15, 23, 42, 0.9);
  color: var(--text-muted);
}

.data-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-main);
  vertical-align: middle;
}

[data-theme="dark"] .data-table td {
  border-bottom-color: rgba(255, 255, 255, 0.04);
}

.data-table tbody tr {
  transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
  background: #f8fafc;
}

[data-theme="dark"] .data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

.table-empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

/* Employee Grid */
.employee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.employee-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.employee-card:hover {
  transform: translateY(-2px);
  border-color: rgba(2, 132, 199, 0.35);
  box-shadow: var(--shadow-md);
}

.emp-card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.emp-card-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  font-size: 0.8125rem;
}

.emp-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.875rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(6px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

[data-theme="dark"] .modal-overlay {
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  max-width: 540px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
  color: var(--text-main);
}

[data-theme="dark"] .modal-content {
  background: #111827;
}

.modal-overlay.open .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.modal-header h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
}

[data-theme="dark"] .modal-header h3 {
  color: #fff;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  font-size: 1.25rem;
  line-height: 1;
  border-radius: 4px;
}
.modal-close:hover {
  color: var(--text-main);
  background: #f1f5f9;
}
[data-theme="dark"] .modal-close:hover {
  color: #fff;
  background: transparent;
}

.modal-body {
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-subtle);
  background: #f8fafc;
}

[data-theme="dark"] .modal-footer {
  background: rgba(15, 23, 42, 0.4);
}

.modal-content.modal-lg {
  max-width: 920px;
}

.modal-section-divider {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1.25rem 0 0.875rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.4rem;
}

.modal-section-divider svg {
  width: 14px;
  height: 14px;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.35rem;
}

/* Timesheet Summary Banner */
.timesheet-summary-banner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
  background: #f8fafc;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

[data-theme="dark"] .timesheet-summary-banner {
  background: rgba(15, 23, 42, 0.8);
}

.ts-banner-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.ts-banner-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ts-banner-value {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--text-main);
}

[data-theme="dark"] .ts-banner-value {
  color: #fff;
}

/* Toasts */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  pointer-events: auto;
  animation: slideInRight var(--transition-normal);
  min-width: 280px;
}

[data-theme="dark"] .toast {
  background: #1e293b;
  color: #fff;
}

.toast.success {
  border-left: 4px solid var(--success);
}
.toast.error {
  border-left: 4px solid var(--danger);
}
.toast.info {
  border-left: 4px solid var(--primary);
}

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

/* ==========================================================================
   Comprehensive Mobile & Tablet Optimization Design System
   ========================================================================== */

@media (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  /* Prevent horizontal layout shifts / canvas overflow */
  html, body {
    max-width: 100%;
    overflow-x: hidden;
  }

  /* Compact modern mobile header */
  .app-header {
    padding: 0.5rem 0.75rem;
    position: sticky;
    top: 0;
    z-index: 90;
    border-bottom: 1px solid var(--border-subtle);
  }

  .header-container {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    align-items: stretch;
  }

  .header-top-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 0.5rem;
  }

  .brand {
    gap: 0.5rem;
    min-width: 0;
    flex-shrink: 1;
  }

  .brand-logo-badge {
    padding: 2px 6px;
    border-radius: var(--radius-sm);
  }

  .brand-logo-img {
    height: 28px;
  }

  .brand-divider {
    height: 20px;
    margin: 0 0.15rem;
  }

  .brand-text h1 {
    font-size: 0.9375rem;
    line-height: 1.15;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .brand-text p {
    display: none; /* Hide subtitle on mobile to keep header clean */
  }

  .header-top-actions {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-shrink: 0;
    margin-left: auto;
  }

  .header-top-actions .btn {
    padding: 0.35rem 0.55rem;
    font-size: 0.75rem;
    height: 32px;
  }

  .header-top-actions .btn-text-responsive {
    display: none; /* Icon-only buttons on mobile for clean look */
  }

  #theme-toggle-text {
    display: none;
  }

  #auth-status-container > div {
    padding: 0.15rem 0.45rem !important;
    gap: 0.35rem !important;
    max-width: 135px;
  }

  #auth-status-container span {
    max-width: 70px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: inline-block;
    font-size: 0.72rem !important;
  }

  #header-logout-btn {
    padding: 0.15rem 0.35rem !important;
    font-size: 0.65rem !important;
  }

  /* Sub-header status bar */
  .header-status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 0.5rem;
    background: var(--bg-surface);
    padding: 0.3rem 0.65rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
  }

  .device-pill {
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    font-size: 0.72rem;
    gap: 0.4rem;
  }

  .device-meta-text {
    font-size: 0.72rem;
    gap: 0.35rem;
  }

  .header-live-poll {
    font-size: 0.72rem;
    flex-shrink: 0;
    gap: 0.35rem;
  }

  /* Navigation Tabs: Horizontally swipeable smooth ribbon */
  .nav-tabs-container {
    padding: 0 0.75rem;
    margin: 0.65rem auto 0;
    max-width: 100%;
    overflow: hidden;
    position: relative;
  }

  .nav-tabs-container::after {
    content: '';
    position: absolute;
    right: 0.75rem;
    top: 0;
    bottom: 0;
    width: 28px;
    background: linear-gradient(90deg, transparent, var(--bg-base));
    pointer-events: none;
    opacity: 0.9;
  }

  .nav-tabs {
    width: 100%;
    max-width: 100%;
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 0.3rem;
    padding: 0.25rem;
    border-radius: var(--radius-md);
  }

  .nav-tabs::-webkit-scrollbar {
    display: none;
  }

  .tab-btn {
    flex-shrink: 0;
    white-space: nowrap;
    padding: 0.45rem 0.8rem;
    font-size: 0.8125rem;
    gap: 0.35rem;
    border-radius: var(--radius-sm);
  }

  .tab-btn svg {
    width: 15px;
    height: 15px;
  }

  /* Main Viewport Content */
  .main-content {
    padding: 0 0.65rem;
    margin: 0.75rem auto 2.5rem;
    max-width: 100%;
    overflow-x: hidden;
  }

  /* Cards */
  .card {
    padding: 0.9rem 0.85rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
  }

  .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
    margin-bottom: 0.85rem;
  }

  .card-header > div:first-child {
    width: 100%;
  }

  .card-title {
    font-size: 0.975rem;
    gap: 0.4rem;
  }

  .card-subtitle {
    font-size: 0.72rem;
  }

  /* Filter Controls Toolbar */
  .filter-toolbar {
    flex-direction: column;
    align-items: stretch;
    padding: 0.85rem;
    gap: 0.75rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
  }

  .filter-group {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }

  .filter-group > div {
    width: 100%;
    min-width: 0;
  }

  .filter-group input,
  .filter-group select,
  .input-field,
  .select-field {
    width: 100% !important;
    min-width: 0 !important;
    font-size: 16px !important; /* Prevents auto zoom on iOS */
    padding: 0.45rem 0.65rem;
    height: 38px;
    box-sizing: border-box;
  }

  .filter-group:last-child {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    width: 100%;
    grid-column: span 2;
    margin-top: 0.25rem !important;
  }

  .filter-group:last-child .btn {
    flex: 1 1 calc(50% - 0.25rem);
    min-width: 110px;
    justify-content: center;
    padding: 0.5rem 0.65rem;
    font-size: 0.78rem;
    height: 38px;
  }

  .input-icon-wrapper {
    width: 100%;
    grid-column: span 2;
  }

  .input-icon-wrapper input {
    width: 100% !important;
  }

  /* Tables: Horizontal Scroll with Smooth Touch */
  .table-container,
  .table-responsive {
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    border-radius: var(--radius-md);
  }

  .data-table {
    min-width: 650px;
    font-size: 0.8125rem;
  }

  .data-table th {
    padding: 0.65rem 0.75rem;
    font-size: 0.7rem;
    white-space: nowrap;
  }

  .data-table td {
    padding: 0.65rem 0.75rem;
    white-space: nowrap;
  }

  /* Hourly Punch Distribution Chart */
  .chart-container {
    height: 180px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    min-width: 100%;
    padding: 1rem 0 0.25rem;
    gap: 4px;
  }

  .bar-col {
    min-width: 18px;
  }

  .bar-label {
    font-size: 0.625rem;
    margin-top: 0.35rem;
  }

  /* Modals: Native Slide-up Bottom Sheet UX */
  .modal-overlay {
    padding: 0;
    align-items: flex-end;
  }

  .modal-content {
    max-width: 100% !important;
    width: 100% !important;
    max-height: 88vh !important;
    border-radius: 20px 20px 0 0 !important;
    border-bottom: none;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .modal-overlay.open .modal-content {
    transform: translateY(0);
  }

  .modal-header {
    padding: 0.85rem 1.15rem;
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg-surface);
  }

  .modal-header h3 {
    font-size: 1.05rem;
  }

  .modal-close {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
  }

  .modal-body {
    padding: 1rem 1.15rem;
    -webkit-overflow-scrolling: touch;
  }

  .modal-body input,
  .modal-body select,
  .modal-body textarea {
    font-size: 16px !important;
  }

  .form-row {
    grid-template-columns: 1fr !important;
    gap: 0.65rem !important;
  }

  .modal-footer {
    padding: 0.75rem 1.15rem;
    position: sticky;
    bottom: 0;
    z-index: 10;
    flex-direction: column-reverse;
    gap: 0.5rem;
  }

  .modal-footer .btn {
    width: 100%;
    height: 42px;
    justify-content: center;
  }

  /* Toast Notifications on Mobile */
  .toast-container {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
    align-items: center;
  }

  .toast {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    padding: 0.75rem 1rem;
    font-size: 0.8125rem;
  }
}

@media (max-width: 640px) {
  /* KPI Stats Grid: 2x2 executive mobile widget layout */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.55rem !important;
    margin-bottom: 1rem !important;
  }

  .kpi-card {
    padding: 0.75rem 0.65rem !important;
    border-radius: var(--radius-md) !important;
  }

  .kpi-header {
    margin-bottom: 0.35rem !important;
  }

  .kpi-label {
    font-size: 0.7rem !important;
    line-height: 1.2 !important;
  }

  .kpi-icon-pill {
    width: 28px !important;
    height: 28px !important;
    min-width: 28px !important;
  }

  .kpi-icon-pill svg {
    width: 14px !important;
    height: 14px !important;
  }

  .kpi-value {
    font-size: 1.4rem !important;
    margin-bottom: 0.25rem !important;
  }

  .kpi-footer {
    font-size: 0.65rem !important;
    flex-wrap: wrap !important;
    gap: 0.2rem !important;
  }

  /* Employee Cards Grid: 1 column on mobile */
  .employee-grid {
    grid-template-columns: 1fr !important;
    gap: 0.75rem !important;
  }

  .employee-card {
    padding: 0.95rem 0.85rem !important;
  }

  .emp-card-header {
    gap: 0.75rem;
    margin-bottom: 0.75rem;
  }

  .emp-card-body {
    grid-template-columns: 1fr 1fr;
    gap: 0.45rem;
    font-size: 0.78rem;
  }

  /* Terminal specs grid */
  .device-specs-grid {
    grid-template-columns: 1fr !important;
    gap: 0.75rem !important;
  }

  /* Activity stream on mobile */
  .activity-stream {
    max-height: 360px;
    gap: 0.5rem;
  }

  .activity-item {
    padding: 0.6rem 0.75rem;
  }

  .activity-info h4 {
    font-size: 0.8125rem;
  }

  .activity-info p {
    font-size: 0.7rem;
  }
}

@media (max-width: 480px) {
  /* Smaller mobile phone optimizations (360px - 400px) */
  .brand-text h1 {
    font-size: 0.875rem;
  }

  .device-pill .device-ip-tag {
    display: none;
  }

  .login-card {
    padding: 1.5rem 1.15rem;
    border-radius: var(--radius-md);
  }

  .login-header-logo img {
    height: 42px;
  }

  .login-header-logo h2 {
    font-size: 1.125rem;
  }
}

/* App Footer */
.app-footer {
  margin-top: 4rem;
  border-top: 1px solid var(--border-subtle);
  background: #ffffff;
  padding: 1.25rem 2rem;
  box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.02);
  transition: background var(--transition-normal);
}

[data-theme="dark"] .app-footer {
  background: rgba(10, 14, 23, 0.95);
}

.footer-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-emblem {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.footer-brand strong {
  color: var(--text-main);
}

.footer-tagline {
  color: var(--text-dim);
  font-size: 0.75rem;
}

@media (max-width: 768px) {
  .footer-container {
    flex-direction: column;
    text-align: center;
    gap: 0.5rem;
  }
}

/* Standalone Clean Login Screen */
.login-view-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: radial-gradient(circle at 50% 20%, rgba(14, 165, 233, 0.08), transparent 60%), var(--bg-base);
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(12px);
  animation: fadeIn 0.35s ease;
}

.login-header-logo {
  text-align: center;
  margin-bottom: 1.75rem;
}

.login-header-logo img {
  height: 52px;
  object-fit: contain;
  margin-bottom: 0.75rem;
}

.login-header-logo h2 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 0.25rem 0;
}

.login-header-logo p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
}