:root {
  --color-red: #c41e3a;
  --color-red-dark: #9e1830;
  --color-red-soft: rgba(196, 30, 58, 0.08);
  --color-black: #1a1a1a;
  --color-bg: #f4f4f5;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #666;
  --color-border: #e5e5e5;
  --sidebar-width: 260px;
  --font-sans: "Inter", system-ui, sans-serif;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.hidden {
  display: none !important;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-red);
  color: white;
}

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

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

.btn-outline:hover {
  border-color: var(--color-red);
  color: var(--color-red);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: none;
}

.btn-ghost:hover {
  color: var(--color-red);
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
}

.btn-full {
  width: 100%;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.88rem;
  font-weight: 600;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: white;
}

.form-group-check label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

.form-error {
  min-height: 1.2rem;
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  color: var(--color-red);
}

.form-note {
  margin: 0.75rem 0 0;
  font-size: 0.88rem;
  color: #15803d;
}

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

/* Login */
.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  background:
    radial-gradient(circle at top right, rgba(196, 30, 58, 0.08), transparent 40%),
    var(--color-bg);
}

.login-card {
  width: min(420px, 100%);
  padding: 2.5rem;
  background: white;
  border-radius: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

.login-logo {
  width: 120px;
  margin: 0 auto 1.5rem;
}

.login-card h1 {
  margin: 0;
  text-align: center;
  font-size: 1.6rem;
}

.login-subtitle {
  margin: 0.5rem 0 1.5rem;
  text-align: center;
  color: var(--color-text-muted);
}

.back-link {
  display: block;
  margin-top: 1.25rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.back-link:hover {
  color: var(--color-red);
}

/* Admin layout */
.admin-app {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--color-black);
  color: white;
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 0.5rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand img {
  width: 42px;
}

.sidebar-brand span {
  font-weight: 700;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 1.5rem;
}

.nav-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  background: transparent;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
}

.nav-btn:hover,
.nav-btn.active {
  background: rgba(255, 255, 255, 0.08);
  color: white;
}

.badge {
  min-width: 22px;
  padding: 0.1rem 0.45rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
  background: var(--color-red);
  border-radius: 999px;
}

.sidebar-footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 1.5rem;
}

.sidebar-link {
  padding: 0.65rem 1rem;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.65);
  border-radius: 10px;
}

.sidebar-link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: white;
}

.sidebar-link-btn {
  width: 100%;
  font-family: inherit;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
}

.admin-main {
  padding: 2rem;
}

.admin-header {
  margin-bottom: 1.5rem;
}

.admin-header h2 {
  margin: 0;
  font-size: 1.8rem;
}

.admin-header p {
  margin: 0.35rem 0 0;
  color: var(--color-text-muted);
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

.panel-card {
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

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

.panel-card h3 {
  margin: 0 0 1rem;
}

.panel-card-header h3 {
  margin: 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  padding: 1.25rem 1.5rem;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 16px;
}

.stat-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.stat-card strong {
  font-size: 2rem;
  color: var(--color-red);
}

.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.admin-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-items: end;
}

.admin-form-narrow {
  max-width: 420px;
  grid-template-columns: 1fr;
}

.gallery-admin-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.gallery-admin-item {
  border: 1px solid var(--color-border);
  border-radius: 14px;
  overflow: hidden;
  background: white;
}

.gallery-admin-item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.gallery-admin-body {
  padding: 1rem;
}

.gallery-admin-body select {
  width: 100%;
  margin-bottom: 0.75rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  background: white;
}

.gallery-admin-body input {
  width: 100%;
  margin-bottom: 0.75rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
}

.gallery-admin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.inquiries-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.inquiry-item {
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: #fafafa;
}

.inquiry-item.unread {
  border-color: rgba(196, 30, 58, 0.35);
  background: var(--color-red-soft);
}

.inquiry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.inquiry-item h4 {
  margin: 0 0 0.35rem;
}

.inquiry-item p {
  margin: 0;
  color: var(--color-text-muted);
}

.inquiry-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.panel-help {
  margin: -0.5rem 0 1rem;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.empty-state {
  padding: 2rem;
  text-align: center;
  color: var(--color-text-muted);
  border: 1px dashed var(--color-border);
  border-radius: 14px;
}

.empty-state p {
  margin: 0 0 0.5rem;
}

.empty-state p:last-child {
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .admin-app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: sticky;
    top: 0;
    z-index: 10;
  }

  .sidebar-nav {
    flex-direction: row;
    overflow-x: auto;
  }

  .nav-btn {
    white-space: nowrap;
  }

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