:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-navy: #1e3a8a;
  --blue-light: #dbeafe;
  --blue-soft: #eff6ff;
  --blue-border: #bfdbfe;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --surface: #ffffff;
  --surface-ground: #f8fafc;
  --border: #e2e8f0;
  --border-focus: #2563eb;
  --red: #dc2626;
  --red-soft: #fef2f2;
  --red-border: #fecaca;
  --red-text: #991b1b;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

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

body {
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-main);
  background: linear-gradient(135deg, #f8fafc 0%, #f0f7ff 100%);
  background-attachment: fixed;
  line-height: 1.5;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
header, .admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px max(24px, calc((100% - 1200px) / 2));
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-brand .brand-icon {
  font-size: 2rem;
  line-height: 1;
}

.header-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 38%;
  border: 2px solid var(--blue-border);
  box-shadow: var(--shadow-sm);
  background: #fde047;
  flex-shrink: 0;
}

.admin-header h1, header h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blue-navy);
  margin: 0;
}

.header-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  white-space: nowrap;
  font-family: inherit;
}

.btn-primary {
  background: var(--blue);
  color: #ffffff;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.25);
}

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

.btn-secondary {
  background: #ffffff;
  color: #334155;
  border-color: #cbd5e1;
}

.btn-secondary:hover {
  background: var(--blue-soft);
  border-color: var(--blue-border);
  color: var(--blue-navy);
}

.btn-outline-danger {
  background: #ffffff;
  color: var(--red);
  border-color: var(--red-border);
}

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

.btn-danger-solid {
  background: var(--red);
  color: #ffffff;
  border-color: var(--red);
  box-shadow: 0 1px 2px rgba(220, 38, 38, 0.2);
}

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

.btn-sm {
  padding: 5px 10px;
  font-size: 0.8rem;
}

/* ==========================================================================
   MAIN DASHBOARD
   ========================================================================== */
.admin-dashboard {
  max-width: 1200px;
  margin: 24px auto 60px;
  padding: 0 20px;
}

/* ==========================================================================
   ALERTS
   ========================================================================== */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-weight: 600;
  font-size: 0.92rem;
  border-left: 4px solid transparent;
}

.alert-success {
  background: var(--blue-soft);
  color: var(--blue-navy);
  border-color: var(--blue);
}

.alert-error {
  background: var(--red-soft);
  color: var(--red-text);
  border-color: var(--red);
}

/* ==========================================================================
   STATS CARDS (KPIs)
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.stat-card.highlight-reserved {
  border-color: var(--blue-border);
  background: linear-gradient(135deg, #ffffff 0%, var(--blue-soft) 100%);
}

.stat-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.icon-total { background: #f1f5f9; }
.icon-reserved { background: var(--blue-light); }
.icon-available { background: #e0f2fe; }

.stat-content {
  flex: 1;
}

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

.stat-flex {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.stat-value {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.stat-value.text-success {
  color: var(--blue);
}

.stat-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--blue-dark);
  background: var(--blue-light);
  padding: 2px 8px;
  border-radius: 999px;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: #e2e8f0;
  border-radius: 999px;
  margin-top: 8px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--blue);
  border-radius: 999px;
  transition: width 0.4s ease;
}

/* ==========================================================================
   FILTER TOOLBAR
   ========================================================================== */
.filter-toolbar {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.95rem;
  color: var(--text-muted);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 10px 36px 10px 38px;
  font-size: 0.9rem;
  background: var(--surface-ground);
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  color: var(--text-main);
  outline: none;
  transition: all 0.15s ease;
}

.search-box input:focus {
  background: #ffffff;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn-clear {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: #cbd5e1;
  border: none;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  font-size: 0.65rem;
  font-weight: bold;
  color: #475569;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.filter-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.status-pills {
  display: flex;
  background: var(--surface-ground);
  border: 1px solid var(--border);
  padding: 4px;
  border-radius: var(--radius-md);
  gap: 4px;
}

.pill {
  padding: 6px 12px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

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

.pill.active {
  background: #ffffff;
  color: var(--blue-navy);
  box-shadow: var(--shadow-sm);
}

.pill.pill-reserved.active {
  color: var(--red-text);
  background: var(--red-soft);
}

.pill.pill-available.active {
  color: var(--blue-dark);
  background: var(--blue-soft);
}

.pill-count {
  font-weight: 500;
  opacity: 0.75;
}

.category-filter select {
  padding: 8px 14px;
  font-size: 0.86rem;
  font-weight: 500;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  color: var(--text-main);
  cursor: pointer;
  outline: none;
}

.category-filter select:focus {
  border-color: var(--blue);
}

/* ==========================================================================
   TABLE OF GIFTS
   ========================================================================== */
.table-container {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

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

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

.gifts-table th {
  background: #f8fafc;
  padding: 14px 18px;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--blue-navy);
  border-bottom: 1px solid var(--border);
}

.gifts-table td {
  padding: 16px 18px;
  vertical-align: middle;
  border-bottom: 1px solid #f1f5f9;
  font-size: 0.92rem;
}

.gift-row {
  transition: background-color 0.15s ease;
}

.gift-row:hover {
  background-color: #f8fafc;
}

.gift-row.row-reserved {
  background-color: #fffbfb;
}

.gift-row.row-reserved:hover {
  background-color: #fff1f2;
}

.gift-title-cell {
  display: flex;
  align-items: center;
  gap: 10px;
}

.gift-bullet {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.bullet-available { background: var(--blue); }
.bullet-reserved { background: var(--red); }

.gift-name {
  font-weight: 600;
  color: var(--text-main);
}

.category-tag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--blue-soft);
  color: var(--blue-dark);
  border: 1px solid var(--blue-border);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
}

/* Status & Guest Highlight */
.reserved-info {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.badge-available {
  background: var(--blue-soft);
  color: var(--blue-dark);
  border: 1px solid var(--blue-border);
}

.badge-reserved {
  background: var(--red-soft);
  color: var(--red-text);
  border: 1px solid var(--red-border);
}

.guest-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--blue-light);
  border: 1px solid var(--blue-border);
  border-radius: 999px;
  color: var(--blue-navy);
  font-size: 0.86rem;
  font-weight: 700;
}

.guest-avatar {
  font-size: 0.95rem;
}

/* Action Buttons */
.actions-cell {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.inline-form {
  display: inline-block;
  margin: 0;
}

.btn-action {
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-reset {
  background: #ffffff;
  color: #475569;
  border-color: #cbd5e1;
}

.btn-reset:hover {
  background: #f1f5f9;
  color: #0f172a;
}

.btn-delete {
  background: #ffffff;
  color: var(--red);
  border-color: #fecaca;
}

.btn-delete:hover {
  background: var(--red-soft);
  border-color: var(--red);
}

/* Empty States */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.empty-state h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--blue-navy);
}

.empty-state p {
  color: var(--text-muted);
  margin-bottom: 18px;
  font-size: 0.95rem;
}

.empty-filter-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.empty-filter-state p {
  margin-bottom: 12px;
}

/* ==========================================================================
   MODALS / DIALOGS
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

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

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  padding: 24px;
  animation: modalPop 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blue-navy);
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 1.2rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.modal-close:hover {
  background: #f1f5f9;
  color: var(--text-main);
}

.modal-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.modal-card label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: #334155;
  margin: 12px 0 6px;
}

.modal-card input,
.modal-card select {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.92rem;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  color: var(--text-main);
  outline: none;
  font-family: inherit;
}

.modal-card input:focus,
.modal-card select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.csv-example {
  margin: 14px 0;
  padding: 10px 12px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.csv-example small {
  display: block;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.csv-example code {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.8rem;
  color: #334155;
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

/* ==========================================================================
   PUBLIC & GUEST PAGES (Login & Gifts list)
   ========================================================================== */
.card {
  max-width: 440px;
  margin: 60px auto;
  padding: 32px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.login-avatar-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 18px;
}

.login-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 38%;
  border: 4px solid #ffffff;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.18), 0 2px 6px rgba(0, 0, 0, 0.08);
  background: #fde047;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.login-avatar:hover {
  transform: scale(1.04);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.24);
}

.card h1 {
  font-size: 1.5rem;
  color: var(--blue-navy);
  margin-bottom: 8px;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.card label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: #334155;
  margin: 14px 0 6px;
  text-align: left;
}

.card input {
  width: 100%;
  padding: 11px 12px;
  font-size: 0.95rem;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  outline: none;
  font-family: inherit;
}

.card input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.card button[type=submit] {
  width: 100%;
  margin-top: 20px;
  padding: 11px;
  background: var(--blue);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
  transition: background 0.15s ease;
}

.card button[type=submit]:hover {
  background: var(--blue-dark);
}

.card a {
  display: inline-block;
  margin-top: 18px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
}

.card a:hover {
  color: var(--blue);
  text-decoration: underline;
}

.error {
  margin: 12px 0;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--red-soft);
  color: var(--red-text);
  border-left: 4px solid var(--red);
  font-size: 0.88rem;
}

/* Guest Gift List Page */
.guest-container {
  max-width: 1000px;
  margin: 28px auto 60px;
  padding: 0 20px;
}

.welcome-box {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.welcome-box h2 {
  color: var(--blue-navy);
  font-size: 1.4rem;
  margin-bottom: 6px;
}

.welcome-box p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* My Gifts Card */
.my-gifts-card {
  background: linear-gradient(135deg, #ffffff 0%, var(--blue-soft) 100%);
  border: 2px solid var(--blue-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-md);
}

.my-gifts-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--blue-border);
}

.my-gifts-header h3 {
  color: var(--blue-navy);
  font-size: 1.15rem;
}

.my-gifts-subtitle {
  font-size: 0.85rem;
  color: var(--blue-dark);
  font-weight: 600;
}

.my-gifts-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.my-gift-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--blue-border);
  gap: 12px;
}

.my-gift-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.my-gift-bullet {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--blue);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  flex-shrink: 0;
}

.btn-unreserve {
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #475569;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-unreserve:hover {
  background: var(--red-soft);
  color: var(--red-text);
  border-color: var(--red-border);
}

.btn-choose {
  padding: 8px 14px;
  background: var(--blue);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2);
}

.btn-choose:hover {
  background: var(--blue-dark);
}

.item-mine {
  border-color: var(--blue-border) !important;
  background-color: var(--blue-soft) !important;
}

.badge-mine {
  background: var(--blue-light);
  color: var(--blue-dark);
  border: 1px solid var(--blue-border);
  margin-top: 4px;
  display: inline-block;
}

.message.success {
  margin: 12px 0;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--blue-soft);
  color: var(--blue-navy);
  border-left: 4px solid var(--blue);
  font-size: 0.88rem;
}

.category-section {
  margin-bottom: 28px;
}

.category-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blue-navy);
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--blue-light);
}

.list-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 12px;
}

.list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.list-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.list-item.reserved {
  border-left: 4px solid var(--red);
  background: #fff8f8;
}

.list-item h3 {
  font-size: 0.95rem;
  font-weight: 600;
}

.item-details {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.badge.reserved {
  background: var(--red-soft);
  color: var(--red-text);
  border: 1px solid var(--red-border);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 820px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .admin-header {
    flex-direction: column;
    align-items: stretch;
  }

  .header-actions {
    justify-content: flex-start;
  }

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

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

  .status-pills {
    overflow-x: auto;
  }
}