@import url("https://fonts.bunny.net/css?family=inter:400,500,600,700&display=swap");

/* ============================================
   CSS VARIABLES (shared with index/host)
   ============================================ */
:root {
  color-scheme: light;
  --header-offset: 64px;
  --ink: #0b1c3b;
  --mist: #f4f6fa;
  --sea: #2f6fe4;
  --glass: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f8fafd;
  --line: rgba(11, 28, 59, 0.11);
  --shadow: 0 8px 20px rgba(11, 28, 59, 0.08);
  --shadow-soft: 0 4px 12px rgba(11, 28, 59, 0.06);
  --hover-sea: #285fca;
  --hover-neutral-soft: rgba(15, 26, 31, 0.14);
  --hover-danger-solid: #8a1f17;
  --red: #a1251b;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-xl: 14px;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

/* ============================================
   BASE
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  background: var(--mist);
  display: flex;
  flex-direction: column;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(
      circle at 12% 18%,
      rgba(47, 111, 228, 0.1),
      transparent 20%
    ),
    radial-gradient(
      circle at 88% 16%,
      rgba(126, 162, 232, 0.1),
      transparent 22%
    );
  z-index: -1;
  pointer-events: none;
}

h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
}
p {
  margin: 0;
}

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 36px;
  padding: 7px 14px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition:
    background 140ms ease,
    color 140ms ease,
    border-color 140ms ease;
}
button svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   BUTTON VARIANTS
   ============================================ */
.secondary-btn {
  background: rgba(11, 28, 59, 0.07);
  color: var(--ink);
  border-color: transparent;
}
.secondary-btn:hover {
  background: var(--hover-neutral-soft);
}

.danger-btn {
  background: var(--red);
  color: #fff;
}
.danger-btn:hover {
  background: var(--hover-danger-solid);
}

.danger-btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 0;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: rgba(161, 37, 27, 0.1);
  color: var(--red);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background 140ms ease;
}
.danger-btn-sm:hover {
  background: rgba(161, 37, 27, 0.2);
}

/* ============================================
   HEADER
   ============================================ */
.sticky-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  min-height: 64px;
  background: #ffffff;
  border-bottom: 1px solid rgba(11, 28, 59, 0.08);
  z-index: 999;
  box-shadow: 0 2px 8px rgba(11, 28, 59, 0.04);
}

.sticky-header-content {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  min-height: 64px;
  padding: 8px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.sticky-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.header-logo {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  object-fit: cover;
  flex-shrink: 0;
}

.sticky-header-title-wrapper {
  display: grid;
  gap: 1px;
}
.sticky-header-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.header-date {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 500;
  color: rgba(11, 28, 59, 0.55);
  white-space: nowrap;
}

.sticky-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 34px;
  padding: 0 10px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(11, 28, 59, 0.12);
  background: #fff;
  color: rgba(11, 28, 59, 0.74);
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition:
    background 140ms ease,
    border-color 140ms ease;
}
.back-link svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.back-link:hover {
  background: rgba(47, 111, 228, 0.08);
  border-color: rgba(47, 111, 228, 0.2);
}

/* ============================================
   PAGE & LAYOUT
   ============================================ */
.page {
  flex: 1 0 auto;
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: calc(var(--header-offset) + 20px) 0 48px;
  display: grid;
  gap: 20px;
  align-content: start;
}

/* ============================================
   STATS BAR
   ============================================ */
.admin-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  animation: fadeUp 400ms ease-out both;
}

.admin-stat {
  flex: 1 1 120px;
  padding: 16px 18px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 4px;
}

.admin-stat-val {
  display: block;
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--sea);
  line-height: 1;
}

.admin-stat-label {
  display: block;
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(11, 28, 59, 0.55);
}

/* ============================================
   ADMIN CONTENT AREA
   ============================================ */
.admin-content {
  display: grid;
  gap: 16px;
  animation: fadeUp 440ms ease-out both;
}

.admin-empty {
  padding: 40px;
  text-align: center;
  color: rgba(11, 28, 59, 0.55);
  font-size: 0.95rem;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
}

.admin-error {
  color: var(--red);
}

/* ============================================
   USER GROUP PANELS
   ============================================ */
.user-group {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.user-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
}

.user-group-info {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.user-group-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  padding: 6px;
  background: rgba(47, 111, 228, 0.1);
  border-radius: 50%;
  fill: none;
  stroke: var(--sea);
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.user-group-name {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 26ch;
}

.user-group-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 3px;
}

.user-group-rooms {
  font-size: 0.78rem;
  color: rgba(11, 28, 59, 0.55);
  font-weight: 500;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge-named {
  background: rgba(26, 127, 79, 0.12);
  color: #15633d;
}

.badge-anon {
  background: rgba(11, 28, 59, 0.08);
  color: rgba(11, 28, 59, 0.6);
}

/* ============================================
   ROOM TABLE
   ============================================ */
.user-rooms-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.admin-table th {
  padding: 9px 14px;
  text-align: left;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(11, 28, 59, 0.55);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
  background: var(--surface-soft);
}

.admin-table td {
  padding: 11px 14px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

.admin-table tbody tr:last-child td {
  border-bottom: none;
}

.admin-table tbody tr:hover td {
  background: rgba(47, 111, 228, 0.03);
}

.room-code-cell {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.87rem;
  font-weight: 700;
  color: var(--sea);
  background: rgba(47, 111, 228, 0.07);
  padding: 3px 7px;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.num-cell {
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
}

.time-cell {
  color: rgba(11, 28, 59, 0.65);
  font-size: 0.82rem;
  white-space: nowrap;
}

.expiry-low {
  color: #b45309 !important;
  font-weight: 600;
}

.dim {
  color: rgba(11, 28, 59, 0.35);
}

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(11, 28, 59, 0.44);
  backdrop-filter: blur(3px);
  z-index: 2000;
  display: grid;
  place-items: center;
  padding: 16px;
}

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

.modal-box {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 48px rgba(11, 28, 59, 0.18);
  padding: 24px;
  max-width: 400px;
  width: 100%;
  display: grid;
  gap: 10px;
  animation: fadeUp 180ms ease-out both;
}

.modal-box p {
  font-size: 0.92rem;
  color: rgba(11, 28, 59, 0.72);
  line-height: 1.55;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 6px;
}

/* ============================================
   TOAST
   ============================================ */
.admin-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: var(--radius-lg);
  background: var(--ink);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(11, 28, 59, 0.24);
  z-index: 3000;
  animation: toastIn 200ms ease-out both;
  white-space: nowrap;
  max-width: calc(100vw - 32px);
}

.admin-toast[hidden] {
  display: none;
}

.admin-toast.toast-hide {
  animation: toastOut 280ms ease-in both;
}

.admin-toast[data-type="success"] {
  background: #15633d;
}
.admin-toast[data-type="error"] {
  background: var(--red);
}
.admin-toast[data-type="info"] {
  background: var(--ink);
}

.toast-icon {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* ============================================
   LOADING OVERLAY
   ============================================ */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(244, 246, 250, 0.65);
  backdrop-filter: blur(2px);
  z-index: 1500;
  display: grid;
  place-items: center;
}
.loading-overlay[hidden] {
  display: none;
}

.loading-spinner {
  width: 34px;
  height: 34px;
  border: 3px solid rgba(47, 111, 228, 0.18);
  border-top-color: var(--sea);
  border-radius: 50%;
  animation: spin 650ms linear infinite;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 640px) {
  .sticky-header-content {
    width: calc(100vw - 20px);
  }
  .page {
    width: calc(100vw - 20px);
  }
  .user-group-header {
    padding: 12px 14px;
  }
  .admin-table th,
  .admin-table td {
    padding: 9px 10px;
  }
  .sticky-header-actions .secondary-btn span,
  .sticky-header-actions .danger-btn span {
    display: none;
  }
}