/* ═══════════════════════════════════════════════════════════
   User Registration System — Global Styles (Light Theme)
═══════════════════════════════════════════════════════════ */

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

/* ── CSS Custom Properties ─────────────────────────────── */
:root {
  /* Primary Palette */
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-mid: #bfdbfe;

  /* Accent */
  --accent: #0ea5e9;
  --accent-light: #e0f2fe;
  --success: #16a34a;
  --success-light: #dcfce7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --warning: #d97706;
  --warning-light: #fef3c7;

  /* Neutrals */
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --border: #e2e8f0;
  --border-hover: #94a3b8;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, .08), 0 2px 4px -1px rgba(0, 0, 0, .05);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -2px rgba(0, 0, 0, .04);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .08), 0 10px 10px -5px rgba(0, 0, 0, .02);

  /* Radius */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ────────────────────────────────────────────── */
.app-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header / Navbar ───────────────────────────────────── */
.navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--text-primary);
}

.navbar-brand .brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  flex-shrink: 0;
}

.navbar-brand .brand-text {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.navbar-brand .brand-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 400;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover,
.nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-badge {
  background: var(--primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 999px;
}

/* ── Page Hero ─────────────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  padding: 3rem 2rem 4.5rem;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='25'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.page-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  position: relative;
}

.page-hero p {
  font-size: 1rem;
  opacity: 0.85;
  margin-top: 0.5rem;
  position: relative;
}

/* ── Main Content ──────────────────────────────────────── */
.main-content {
  flex: 1;
  padding: 2rem;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
}

/* ── Card ──────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}

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

.card-header h2 {
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
}

.card-body {
  padding: 1.5rem;
}

/* ── Form Elements ─────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
}

.required-star {
  color: var(--danger);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.875rem;
  font-size: 0.9rem;
  font-family: inherit;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-control:hover:not(:focus) {
  border-color: var(--border-hover);
}

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

.input-wrapper {
  position: relative;
}

.input-wrapper .input-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.95rem;
  pointer-events: none;
}

.input-wrapper .form-control {
  padding-left: 2.375rem;
}

/* ── Phone Prefix Input ────────────────────────────────── */
.phone-input-wrapper {
  display: flex;
  align-items: stretch;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.phone-input-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.phone-prefix {
  display: flex;
  align-items: center;
  padding: 0 0.875rem;
  background: var(--surface-2);
  border-right: 1.5px solid var(--border);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-secondary);
  white-space: nowrap;
  user-select: none;
  letter-spacing: 0.01em;
  flex-shrink: 0;
}

.phone-local {
  flex: 1;
  border: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  padding-left: 0.75rem !important;
}

.phone-local:focus {
  border: none !important;
  box-shadow: none !important;
  outline: none;
}

/* ── Field hint / helper text ──────────────────────────── */
.field-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.4;
}

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2394a3b8'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 11.168l3.71-3.938a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1.1rem;
  padding-right: 2.5rem;
  cursor: pointer;
}

/* ── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  outline: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary-light);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.btn-danger:hover {
  background: #b91c1c;
}

.btn-danger-outline {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}

.btn-danger-outline:hover {
  background: var(--danger-light);
}

.btn-success {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}

.btn-success:hover {
  background: #15803d;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
}

.btn-lg {
  padding: 0.8rem 2rem;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

/* ── Stats Cards ───────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.stat-card:hover {
  box-shadow: var(--shadow);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.stat-icon.blue {
  background: var(--primary-light);
  color: var(--primary);
}

.stat-icon.green {
  background: var(--success-light);
  color: var(--success);
}

.stat-icon.sky {
  background: var(--accent-light);
  color: var(--accent);
}

.stat-icon.amber {
  background: var(--warning-light);
  color: var(--warning);
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 2px;
}

/* ── Table ─────────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th {
  background: var(--surface-2);
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  vertical-align: middle;
}

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

tbody tr:hover {
  background: var(--primary-light);
}

tr.clickable {
  cursor: pointer;
}

/* ── Badges ────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge-success {
  background: var(--success-light);
  color: var(--success);
}

.badge-danger {
  background: var(--danger-light);
  color: var(--danger);
}

.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
}

.badge-warning {
  background: var(--warning-light);
  color: var(--warning);
}

/* ── Toast / Alert ─────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 360px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  animation: slideInToast 0.3s ease both;
  border-left: 4px solid transparent;
}

.toast-success {
  background: var(--surface);
  border-left-color: var(--success);
}

.toast-error {
  background: var(--surface);
  border-left-color: var(--danger);
}

.toast-icon {
  font-size: 1.125rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.toast-success .toast-icon {
  color: var(--success);
}

.toast-error .toast-icon {
  color: var(--danger);
}

.toast-message {
  flex: 1;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
}

@keyframes slideInToast {
  from {
    opacity: 0;
    transform: translateX(2rem);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeOutToast {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
    transform: translateX(2rem);
  }
}

/* ── Modal ─────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(3px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.hidden {
  display: none;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  animation: slideUp 0.25s ease;
  border: 1px solid var(--border);
}

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

.modal-header h3 {
  font-size: 1rem;
  font-weight: 600;
}

.modal-close {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  font-size: 1.1rem;
}

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

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* ── Filter Bar ────────────────────────────────────────── */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.filter-control {
  padding: 0.45rem 0.75rem;
  font-size: 0.825rem;
  font-family: inherit;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition);
  cursor: pointer;
}

.filter-control:focus {
  border-color: var(--primary);
}

select.filter-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2394a3b8'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 11.168l3.71-3.938a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.4rem center;
  background-size: 1rem;
  appearance: none;
  padding-right: 1.75rem;
}

/* ── Tabs ──────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.5rem;
}

.tab-btn {
  padding: 0.6rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-secondary);
  border-bottom: 2.5px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition), border-color var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.tab-btn:hover {
  color: var(--primary);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ── Empty State ───────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state p {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ── Footer ────────────────────────────────────────────── */
.app-footer {
  text-align: center;
  padding: 1.25rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* ── Animations ────────────────────────────────────────── */
@keyframes fadeIn {
  from {
    opacity: 0
  }

  to {
    opacity: 1
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(1rem)
  }

  to {
    opacity: 1;
    transform: translateY(0)
  }
}

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 640px) {
  .navbar {
    padding: 0 1rem;
  }

  .main-content {
    padding: 1rem;
  }

  .page-hero {
    padding: 2rem 1rem 3.5rem;
  }

  .page-hero h1 {
    font-size: 1.5rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-group.full-width {
    grid-column: auto;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* ── Registration form centering ───────────────────────── */
.registration-container {
  max-width: 640px;
  margin: -2.5rem auto 0;
  position: relative;
  z-index: 1;
}

/* ── Success Confirmation ──────────────────────────────── */
.success-screen {
  text-align: center;
  padding: 2.5rem 1.5rem;
}

.success-screen .success-icon {
  width: 72px;
  height: 72px;
  background: var(--success-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--success);
  margin: 0 auto 1.25rem;
  animation: scaleIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes scaleIn {
  from {
    transform: scale(0);
  }

  to {
    transform: scale(1);
  }
}

.success-screen h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

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

/* ── Loading spinner ───────────────────────────────────── */
.spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
  flex-shrink: 0;
}

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

/* ── Icon buttons ──────────────────────────────────────── */
.icon-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: var(--surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.icon-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.icon-btn.danger:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: var(--danger-light);
}

/* ── Registration date hint ────────────────────────────── */
.reg-date-hint {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.875rem;
  background: var(--primary-light);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--primary);
  margin-bottom: 1.25rem;
}

/* ── Auto-populate notice ──────────────────────────────── */
.autofill-notice {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.875rem;
  background: var(--success-light);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--success);
  font-weight: 500;
  margin-bottom: 1.25rem;
  animation: slideUp 0.25s ease;
}

.autofill-notice.hidden {
  display: none;
}