/* ==========================================================================
   SubTrack Web Portal - Premium Dark Glassmorphism CSS Design System
   ========================================================================== */

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

:root {
  --bg-dark: #090b15;
  --bg-card: rgba(20, 23, 41, 0.7);
  --bg-card-hover: rgba(28, 32, 57, 0.8);
  --bg-dialog: #121528;
  --bg-input: #1a1d36;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: #7c5cff;
  --border-card: rgba(255, 255, 255, 0.1);

  --primary: #7c5cff;
  --primary-hover: #6a46ff;
  --primary-glow: rgba(124, 92, 255, 0.35);

  --accent-cyan: #22d3ee;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --shadow-glow: 0 0 20px rgba(124, 92, 255, 0.2);

  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html, body {
  height: 100%;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Background gradient blur effects */
body::before, body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
}

body::before {
  top: -10%;
  left: -10%;
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.15) 0%, rgba(0,0,0,0) 70%);
}

body::after {
  bottom: -10%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.1) 0%, rgba(0,0,0,0) 70%);
}

/* Layout Container */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation Header */
.navbar {
  background: rgba(15, 18, 35, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.35rem;
  color: #fff;
  text-decoration: none;
}

.brand-icon {
  width: 2.25rem;
  height: 2.25rem;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
  background: var(--border-subtle);
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #6366f1);
  color: #fff;
  box-shadow: 0 4px 14px 0 rgba(124, 92, 255, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover), #4f46e5);
  box-shadow: 0 6px 20px 0 rgba(124, 92, 255, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card);
  border-color: var(--border-card);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255,255,255,0.2);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  border-color: rgba(244, 63, 94, 0.3);
  color: var(--accent-rose);
}

.btn-danger:hover {
  background: rgba(244, 63, 94, 0.3);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.825rem;
}

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

.btn-google {
  background: #ffffff;
  color: #1f2937;
  border: 1px solid #e5e7eb;
}

.btn-google:hover {
  background: #f9fafb;
}

.btn-apple {
  background: #000000;
  color: #ffffff;
  border: 1px solid #374151;
}

.btn-apple:hover {
  background: #111827;
}

/* Forms & Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

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

.form-control {
  width: 100%;
  padding: 0.675rem 0.875rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.925rem;
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.2);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

/* Glass Cards */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

/* Auth Pages */
.auth-wrapper {
  min-height: calc(100vh - 4.25rem);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.auth-card {
  width: 100%;
  max-width: 440px;
}

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

.auth-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.25rem 0;
  color: var(--text-dim);
  font-size: 0.825rem;
}

.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
}

/* KPI Cards Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.kpi-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

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

.kpi-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.kpi-value {
  font-size: 1.85rem;
  font-weight: 700;
  color: #fff;
}

/* Toolbar & Filters */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-card);
  padding: 0.3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  overflow-x: auto;
}

.filter-chip {
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  background: transparent;
  border: none;
  transition: var(--transition-fast);
}

.filter-chip.active, .filter-chip:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* Subscription Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-card);
  background: var(--bg-card);
}

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

.data-table th {
  padding: 0.875rem 1rem;
  background: rgba(10, 12, 24, 0.6);
  font-weight: 600;
  font-size: 0.825rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border-subtle);
}

.data-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.9rem;
  vertical-align: middle;
}

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

.data-table tbody tr:hover {
  background: var(--bg-card-hover);
}

.data-table tbody tr.row-urgent {
  background: rgba(244, 63, 94, 0.08);
}

.data-table tbody tr.row-warning {
  background: rgba(245, 158, 11, 0.08);
}

.data-table tbody tr.row-inactive {
  opacity: 0.55;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.775rem;
  font-weight: 600;
}

.badge-active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
}

.badge-cancelled {
  background: rgba(100, 116, 139, 0.2);
  color: var(--text-muted);
}

.badge-urgent {
  background: rgba(244, 63, 94, 0.2);
  color: var(--accent-rose);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-amber);
}

/* Summary Bar */
.totals-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: rgba(15, 18, 35, 0.9);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  margin-top: 1.25rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(5, 7, 15, 0.75);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

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

.modal-card {
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(12px);
  transition: transform var(--transition-fast);
}

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

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.modal-header h2 {
  font-size: 1.35rem;
  font-weight: 700;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.close-btn:hover {
  color: #fff;
}

/* Toast Notification */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--bg-dialog);
  border: 1px solid var(--border-card);
  color: #fff;
  font-size: 0.9rem;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideIn 0.25s ease forwards;
}

.toast-success { border-left: 4px solid var(--accent-emerald); }
.toast-error { border-left: 4px solid var(--accent-rose); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Dev Mailbox Drawer */
.dev-mailbox-drawer {
  position: fixed;
  bottom: 1rem;
  left: 1rem;
  z-index: 999;
  background: rgba(30, 41, 59, 0.95);
  border: 1px solid var(--accent-amber);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  max-width: 400px;
  font-size: 0.825rem;
}