/* ── Theme variables ───────────────────────────────── */
:root {
  --blue: #1b3a8f;
  --blue-light: #2a52c9;
  --blue-dark: #0f2260;
  --gold: #b8860b;
  --gold-light: #d4a017;
  --danger: #dc2626;
  --success: #16a34a;

  /* Light mode (default) */
  --bg: #f0f2f7;
  --surface: #ffffff;
  --border: #dde1eb;
  --text: #1a1f36;
  --text-muted: #6b7280;
  --input-bg: #f5f7ff;
  --table-hover: #f7f9ff;
  --shadow: rgba(0,0,0,0.07);

  --auth-bg: linear-gradient(135deg, #dde4f5 0%, #f0f2f7 100%);
  --auth-surface: #ffffff;
  --auth-border: #dde1eb;
  --auth-input-bg: #f5f7ff;
  --auth-text: #1a1f36;
  --auth-muted: #6b7280;
  --auth-title: #1b3a8f;
  --auth-tagline: #6b7280;
  --auth-error: #dc2626;
  --auth-input-focus: #1b3a8f;
}

[data-theme="dark"] {
  --bg: #080f24;
  --surface: #111e45;
  --border: #1e3070;
  --text: #e8eaf6;
  --text-muted: #7b8ec8;
  --input-bg: #0d1b3e;
  --table-hover: #162050;
  --shadow: rgba(0,0,0,0.3);

  --auth-bg: radial-gradient(ellipse at top, #1b3a8f22 0%, transparent 70%), #080f24;
  --auth-surface: #111e45;
  --auth-border: #1e3070;
  --auth-input-bg: #0d1b3e;
  --auth-text: #e8eaf6;
  --auth-muted: #7b8ec8;
  --auth-title: #e8c050;
  --auth-tagline: #7b8ec8;
  --auth-error: #f87171;
  --auth-input-focus: #e8c050;
}

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

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.25s, color 0.25s;
}

/* ── Auth page ─────────────────────────────────────── */
#auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
  background: var(--auth-bg);
  transition: background 0.25s;
}

.auth-wrapper {
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.auth-logo-wrap {
  background: #ffffff;
  border-radius: 16px 16px 0 0;
  padding: 1.25rem 2rem 1rem;
  width: 100%;
  display: flex;
  justify-content: center;
  border: 1px solid #d0d0d0;
  border-bottom: none;
}

.auth-church-logo {
  width: 220px;
  height: auto;
  display: block;
}

.auth-box {
  background: var(--auth-surface);
  border: 1px solid var(--auth-border);
  border-radius: 0 0 16px 16px;
  padding: 1.75rem 2rem 2rem;
  width: 100%;
  text-align: center;
  transition: background 0.25s, border-color 0.25s;
  position: relative;
}

.auth-theme-toggle {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: 1px solid var(--auth-border);
  border-radius: 20px;
  padding: 0.25rem 0.6rem;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--auth-muted);
  transition: border-color 0.2s, color 0.2s;
}

.auth-theme-toggle:hover { border-color: var(--auth-input-focus); color: var(--auth-text); }

.auth-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--auth-title);
  letter-spacing: 1px;
  margin-bottom: 0.2rem;
  transition: color 0.25s;
}

.auth-tagline {
  color: var(--auth-tagline);
  font-size: 0.82rem;
  margin-bottom: 1.5rem;
}

.auth-box input {
  width: 100%;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  background: var(--auth-input-bg);
  border: 1px solid var(--auth-border);
  border-radius: 8px;
  color: var(--auth-text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s, background 0.25s;
}

.auth-box input:focus { border-color: var(--auth-input-focus); }
.auth-error { color: var(--auth-error); font-size: 0.85rem; margin-top: 0.75rem; min-height: 1.2rem; }

/* ── Buttons ───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  text-decoration: none;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--blue); color: #fff; width: 100%; justify-content: center; }
.btn-primary:hover { background: var(--blue-light); }
.btn-secondary { background: var(--border); color: var(--text); }
.btn-secondary:hover { background: #c8cfe0; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--blue-light); background: var(--input-bg); }
.btn-sm { padding: 0.38rem 0.8rem; font-size: 0.8rem; }

/* ── App shell ─────────────────────────────────────── */
#app { display: none; flex-direction: column; min-height: 100vh; }

header {
  background: var(--surface);
  border-bottom: 3px solid var(--blue);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px var(--shadow);
  transition: background 0.25s, box-shadow 0.25s;
}

.header-main {
  padding: 0 1rem;
  height: 58px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.5rem;
}

.header-sub {
  background: var(--blue-dark);
  color: rgba(255,255,255,0.85);
  font-size: 0.72rem;
  font-weight: 700;
  text-align: center;
  padding: 0.28rem 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  justify-content: center;
  align-items: center;
}

.header-left { display: flex; align-items: center; }
.header-logo { height: 42px; width: auto; object-fit: contain; }

.header-center {
  text-align: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: 0.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

[data-theme="dark"] .header-center { color: #e8c050; }

.header-right { display: flex; align-items: center; gap: 0.5rem; justify-content: flex-end; }
.user-badge { color: var(--text-muted); font-size: 0.82rem; font-weight: 500; }

/* ── Theme toggle button ───────────────────────────── */
.theme-toggle {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.3rem 0.75rem;
  font-size: 0.82rem;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: border-color 0.2s, color 0.2s, background 0.25s;
  white-space: nowrap;
}

.theme-toggle:hover { border-color: var(--blue-light); color: var(--text); }

/* ── Nav ───────────────────────────────────────────── */
nav {
  background: var(--blue-dark);
  display: flex;
  gap: 0;
  overflow-x: auto;
}

.nav-tab {
  padding: 0.75rem 1.4rem;
  color: rgba(255,255,255,0.6);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 500;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.nav-tab:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-tab.active { color: #fff; border-bottom-color: var(--gold-light); background: rgba(255,255,255,0.1); }
.nav-tab.admin-only { display: none; }

main { flex: 1; padding: 1.75rem 1.5rem; max-width: 1200px; margin: 0 auto; width: 100%; }

/* ── Date picker with album indicators ─────────────── */
.date-picker-wrap {
  position: relative;
  flex: 0 0 auto;
}

.date-picker-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.88rem;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.2s, color 0.2s, background 0.25s;
}

.date-picker-btn:hover { border-color: var(--blue-light); color: var(--text); }

.date-picker-drop {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 200;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  width: 280px;
  box-shadow: 0 8px 24px var(--shadow);
}

.cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.cal-month-label { font-weight: 700; font-size: 0.9rem; color: var(--text); }

.cal-nav {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 28px;
  height: 28px;
  font-size: 1rem;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
  line-height: 1;
}

.cal-nav:hover { background: var(--blue); color: #fff; border-color: var(--blue); }

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.cal-day-name {
  text-align: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-muted);
  padding: 0.2rem 0;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.cal-day {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 0.1rem;
  border-radius: 6px;
  min-height: 34px;
  gap: 2px;
  cursor: default;
  transition: background 0.15s;
}

.cal-day.empty { background: transparent; }

.cal-day-num {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1;
}

.cal-day.today .cal-day-num {
  background: var(--blue);
  color: #fff;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.72rem;
}

.cal-day.has-album {
  cursor: pointer;
  background: var(--input-bg);
}

.cal-day.has-album .cal-day-num { color: var(--text); font-weight: 700; }
.cal-day.has-album:hover { background: rgba(27,58,143,0.13); }

.cal-day.selected { background: var(--blue) !important; }
.cal-day.selected .cal-day-num { color: #fff !important; font-weight: 700; }
.cal-day.selected .cal-dot { background: rgba(255,255,255,0.8); }

.cal-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--blue-light);
  display: block;
}

.cal-day.today.has-album:not(.selected) .cal-dot { background: #fff; }

.cal-clear-btn {
  display: block;
  width: 100%;
  margin-top: 0.6rem;
  padding: 0.45rem;
  background: none;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

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

/* ── Search bar ────────────────────────────────────── */
.search-bar { display: flex; gap: 0.75rem; margin-bottom: 1.5rem; flex-wrap: wrap; }

.search-bar input {
  flex: 1;
  min-width: 200px;
  padding: 0.65rem 1rem 0.65rem 2.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.92rem;
  color: var(--text);
  background: var(--surface);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.25s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 0.75rem center;
}

.search-bar input:focus { border-color: var(--blue-light); box-shadow: 0 0 0 3px rgba(42,82,201,0.12); }
.search-bar input[type="date"] { flex: 0 0 160px; padding-left: 0.75rem; background-image: none; }

/* ── Cards / grid ──────────────────────────────────── */
.section-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 1.25rem; color: var(--text); }

.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.event-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.15s, background 0.25s;
  box-shadow: 0 1px 4px var(--shadow);
}

.event-card:hover { box-shadow: 0 6px 20px rgba(27,58,143,0.18); transform: translateY(-3px); }

.event-thumb { width: 100%; height: 170px; object-fit: cover; background: var(--bg); display: block; }

.event-thumb-placeholder {
  width: 100%;
  height: 170px;
  background: var(--input-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--border);
  font-size: 2.5rem;
}

.event-info { padding: 0.9rem 1rem; }
.event-title { font-weight: 700; margin-bottom: 0.3rem; color: var(--text); font-size: 0.95rem; }
.event-meta { color: var(--text-muted); font-size: 0.78rem; display: flex; justify-content: space-between; }

/* ── Photo gallery ─────────────────────────────────── */
.gallery-header { display: flex; align-items: center; gap: 0.85rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.gallery-header h2 { font-size: 1.05rem; color: var(--text); font-weight: 700; }
.gallery-header .meta { color: var(--text-muted); font-size: 0.82rem; }

.photos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.85rem;
}

.photo-item {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg);
  cursor: pointer;
  box-shadow: 0 1px 4px var(--shadow);
}

.photo-item img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.2s; }
.photo-item:hover img { transform: scale(1.04); }

.photo-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15,34,96,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}

.photo-item:hover .photo-overlay { opacity: 1; }

.photo-overlay .dl-btn {
  background: #fff;
  color: var(--blue);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.82rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.dl-btn:hover { background: #f0f4ff; }

.admin-photo-del {
  position: absolute;
  top: 6px;
  right: 6px;
  background: rgba(220,38,38,0.88);
  border: none;
  color: white;
  border-radius: 50%;
  width: 26px;
  height: 26px;
  font-size: 0.75rem;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
}

/* ── Lightbox ──────────────────────────────────────── */
#lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.94);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 1rem;
}

#lightbox.open { display: flex; }
#lightbox img { max-width: 100%; max-height: 80vh; border-radius: 6px; box-shadow: 0 8px 40px rgba(0,0,0,0.6); }

.lightbox-actions { margin-top: 1rem; display: flex; gap: 0.75rem; }
.lightbox-actions .btn-primary { width: auto; background: var(--blue); }
.lightbox-actions .btn-ghost { color: #ccc; border-color: #444; }
.lightbox-actions .btn-ghost:hover { color: #fff; border-color: #888; background: transparent; }

#lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255,255,255,0.1);
  border: none;
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#lightbox-close:hover { background: rgba(255,255,255,0.2); }

/* ── Admin panels ──────────────────────────────────── */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 4px var(--shadow);
  transition: background 0.25s, border-color 0.25s;
}

.panel h3 { font-size: 1rem; margin-bottom: 1rem; color: var(--blue); font-weight: 700; }
[data-theme="dark"] .panel h3 { color: #e8c050; }

.form-row { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 0.75rem; }
.form-row input, .form-row select {
  flex: 1;
  min-width: 160px;
  padding: 0.65rem 0.9rem;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s, background 0.25s;
}

.form-row input:focus, .form-row select:focus { border-color: var(--blue-light); }

.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 2.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  margin-bottom: 0.75rem;
  background: var(--input-bg);
}

.upload-zone:hover, .upload-zone.dragover { border-color: var(--blue-light); background: var(--surface); }
.upload-zone p { color: var(--text-muted); font-size: 0.88rem; margin-top: 0.5rem; }

.upload-progress { display: none; margin-top: 0.75rem; }
.progress-bar-bg { background: var(--bg); border-radius: 6px; height: 8px; overflow: hidden; border: 1px solid var(--border); }
.progress-bar { background: var(--blue-light); height: 100%; width: 0; transition: width 0.3s; border-radius: 6px; }

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th { text-align: left; padding: 0.6rem 0.75rem; color: var(--text-muted); border-bottom: 2px solid var(--border); font-weight: 600; }
td { padding: 0.65rem 0.75rem; border-bottom: 1px solid var(--border); color: var(--text); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--table-hover); }

.badge { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 20px; font-size: 0.75rem; font-weight: 700; }
.badge-admin { background: #fffbeb; color: #92400e; border: 1px solid #fcd34d; }
.badge-member { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }

[data-theme="dark"] .badge-admin { background: rgba(252,211,77,0.15); color: #fcd34d; border-color: rgba(252,211,77,0.3); }
[data-theme="dark"] .badge-member { background: rgba(42,82,201,0.2); color: #93c5fd; border-color: rgba(42,82,201,0.4); }

/* ── Toast ─────────────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text);
  color: var(--surface);
  padding: 0.7rem 1.5rem;
  border-radius: 30px;
  font-size: 0.88rem;
  font-weight: 500;
  transition: transform 0.3s;
  z-index: 2000;
  pointer-events: none;
  box-shadow: 0 4px 16px var(--shadow);
}

#toast.show { transform: translateX(-50%) translateY(0); }
#toast.success { background: var(--success); color: #fff; }
#toast.error { background: var(--danger); color: #fff; }

/* ── Empty / loading ───────────────────────────────── */
.empty-state { text-align: center; padding: 4rem 1rem; color: var(--text-muted); }
.empty-state .icon { font-size: 3rem; margin-bottom: 0.75rem; }
.empty-state p { font-size: 0.95rem; }

.spinner {
  border: 3px solid var(--border);
  border-top-color: var(--blue-light);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  animation: spin 0.7s linear infinite;
  margin: 3rem auto;
}

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

/* ── Responsive ────────────────────────────────────── */
@media (max-width: 600px) {
  main { padding: 1rem; }
  .photos-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .header-main { padding: 0 0.6rem; gap: 0.35rem; }
  .header-center { font-size: 0.95rem; }
  .header-logo { height: 34px; }
  .user-badge { display: none; }
  .theme-toggle span { display: none; }
  .theme-toggle { padding: 0.3rem 0.5rem; font-size: 1rem; }
  #logout-btn { padding: 0.35rem 0.55rem; font-size: 0.75rem; }
}