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

:root, [data-theme="dark"] {
  --bg-dark: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-hover: rgba(51, 65, 85, 0.8);
  --border-color: rgba(255, 255, 255, 0.1);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  --accent-primary: #6366f1;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  --accent-glow: rgba(99, 102, 241, 0.25);
  
  --status-ok: #10b981;
  --status-warning: #f59e0b;
  --status-danger: #ef4444;

  --font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --bg-radial-1: rgba(99, 102, 241, 0.15);
  --bg-radial-2: rgba(168, 85, 247, 0.15);
  --input-bg: rgba(15, 23, 42, 0.6);
  --header-bg: rgba(15, 23, 42, 0.8);
  --table-border: rgba(255, 255, 255, 0.05);
}

[data-theme="light"] {
  --bg-dark: #f8fafc;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(241, 245, 249, 0.95);
  --border-color: rgba(148, 163, 184, 0.25);
  --text-main: #0f172a;
  --text-muted: #64748b;
  
  --accent-primary: #4f46e5;
  --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #9333ea 100%);
  --accent-glow: rgba(79, 70, 229, 0.2);
  
  --status-ok: #059669;
  --status-warning: #d97706;
  --status-danger: #dc2626;

  --bg-radial-1: rgba(99, 102, 241, 0.08);
  --bg-radial-2: rgba(168, 85, 247, 0.08);
  --input-bg: #ffffff;
  --header-bg: rgba(255, 255, 255, 0.9);
  --table-border: rgba(148, 163, 184, 0.15);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(at 0% 0%, var(--bg-radial-1) 0px, transparent 50%),
    radial-gradient(at 100% 100%, var(--bg-radial-2) 0px, transparent 50%);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.header {
  height: 72px;
  border-bottom: 1px solid var(--border-color);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  color: #ffffff;
  box-shadow: 0 0 15px var(--accent-glow);
}

.brand-text {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 0.5rem;
  padding-left: 0.5rem;
  border-left: 1px solid var(--border-color);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle, .lang-toggle, .btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.theme-toggle:hover, .lang-toggle:hover, .btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
}

.btn-subtle {
  background: transparent;
  border: 1px dashed var(--border-color);
  color: var(--text-muted);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-subtle:hover {
  color: var(--text-main);
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
}

.link-subtle {
  color: var(--text-muted);
  text-decoration: none;
  border: 1px dashed var(--border-color);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.link-subtle:hover {
  color: var(--text-main);
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
}

.main-container {
  max-width: 1200px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 1.5rem;
  flex: 1;
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 2rem;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-control {
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease, background-color 0.3s ease;
}

.form-control:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn-primary {
  background: var(--accent-gradient);
  border: none;
  color: #fff;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 20px var(--accent-glow);
  align-self: flex-end;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px var(--accent-glow);
}

.table-responsive {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  padding: 0.85rem 1rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--table-border);
  font-size: 0.925rem;
  white-space: nowrap;
}

tr:last-child td {
  border-bottom: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
}

.badge-green { background: rgba(16, 185, 129, 0.15); color: var(--status-ok); border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-yellow { background: rgba(245, 158, 11, 0.15); color: var(--status-warning); border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-red { background: rgba(239, 68, 68, 0.15); color: var(--status-danger); border: 1px solid rgba(239, 68, 68, 0.3); }

.alert-toast {
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid var(--status-ok);
  color: var(--status-ok);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.footer {
  border-top: 1px solid var(--border-color);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  padding: 1.25rem 2rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 100%;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-version {
  font-weight: 700;
  color: var(--accent-primary);
  background: var(--bg-card);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

/* Nav Tabs */
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 1rem;
}

.nav-tab {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.nav-tab:hover {
  color: var(--text-main);
  background: var(--bg-card-hover);
}

.nav-tab.active {
  color: var(--text-main);
  background: var(--bg-card);
  border-color: var(--border-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Stats KPI Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: transform 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-card.stat-ok .stat-value { color: var(--status-ok); }
.stat-card.stat-warning .stat-value { color: var(--status-warning); }
.stat-card.stat-danger .stat-value { color: var(--status-danger); }

/* Heatmap Cards */
.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.heatmap-card {
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.heatmap-card:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.heatmap-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.heatmap-client {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.heatmap-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 0.15rem;
}

.progress-bar-bg {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 9999px;
  transition: width 0.4s ease;
}

.fill-ok { background: var(--status-ok); }
.fill-warning { background: var(--status-warning); }
.fill-danger { background: var(--status-danger); }

.heatmap-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 600;
}

.metric-val {
  font-weight: 700;
  margin-top: 0.1rem;
}

/* Modal Dialog */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.open {
  display: flex;
}

.modal-content {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 580px;
  width: 100%;
  padding: 2rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  position: relative;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-main);
}

.alert-toast-danger {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
  color: #f87171;
}