:root {
  --bg: #f4f6fa;
  --bg2: #e8edf5;
  --card: #ffffff;
  --primary: #1a365d;
  --primary-light: #2c5282;
  --accent: #c9a227;
  --text: #1a2744;
  --text-muted: #64748b;
  --border: rgba(26, 54, 93, 0.12);
  --radius: 12px;
  --shadow: 0 2px 12px rgba(26, 39, 68, 0.08);
}
:root.dark {
  --bg: #0f172a;
  --bg2: #1e293b;
  --card: #1e293b;
  --primary: #93c5fd;
  --primary-light: #bfdbfe;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: rgba(148, 163, 184, 0.2);
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { height: 100%; }
body {
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 16px;
  line-height: 1.6;
}
body.font-small { font-size: 13px; }
body.font-medium { font-size: 16px; }
body.font-large { font-size: 19px; }

.screen { display: none; min-height: 100vh; flex-direction: column; }
.screen.active { display: flex; }

.topbar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: sticky; top: 0; z-index: 100;
}
.topbar-title { font-family: 'Noto Serif KR', serif; font-size: 1.05em; color: var(--primary); flex: 1; }
.btn-back { background: none; border: none; color: var(--primary); font-size: 1.4em; cursor: pointer; padding: 0.2rem; line-height: 1; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.35rem;
  padding: 0.55rem 1rem; border-radius: 8px; border: none; cursor: pointer;
  font-family: inherit; font-size: 0.88em; font-weight: 500; transition: all 0.15s;
}
.btn-primary { background: var(--primary); color: #fff; font-weight: 600; }
.btn-primary:hover { background: var(--primary-light); }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.78em; }

.content-scroll { flex: 1; overflow-y: auto; padding-bottom: 2rem; }
.loading { display: flex; align-items: center; justify-content: center; padding: 3rem; color: var(--text-muted); }
.spinner { width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; margin-right: 0.6rem; }
@keyframes spin { to { transform: rotate(360deg); } }
.no-data { text-align: center; color: var(--text-muted); padding: 2.5rem 1rem; }

/* Font picker */
#screen-font {
  background: radial-gradient(ellipse at center, var(--bg2) 0%, var(--bg) 70%);
  align-items: center; justify-content: center; text-align: center; padding: 2rem;
}
.fp-title { font-family: 'Noto Serif KR', serif; font-size: 1.6em; font-weight: 700; color: var(--primary); }
.fp-sub { font-size: 0.85em; color: var(--text-muted); margin: 0.5rem 0 2rem; }
.font-options { display: flex; gap: 0.75rem; justify-content: center; margin-bottom: 1.5rem; flex-wrap: wrap; }
.font-opt {
  background: var(--card); border: 2px solid var(--border); border-radius: 12px;
  padding: 1rem 1.2rem; cursor: pointer; min-width: 72px;
}
.font-opt.sel { border-color: var(--primary); background: rgba(26, 54, 93, 0.06); }

/* Home */
.home-header { text-align: center; padding: 1.5rem 1rem 0.5rem; }
.home-search { max-width: 420px; margin: 0.75rem auto 0; }
.home-title { font-family: 'Noto Serif KR', serif; font-weight: 700; line-height: 1.3; }
.home-tagline { margin-top: 0.35rem; line-height: 1.4; }
.home-topright { position: absolute; top: 0.75rem; right: 0.75rem; display: flex; gap: 0.4rem; }
#screen-home { position: relative; }

.nav-card-lg {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.25rem 1rem; margin: 0.65rem 1rem; cursor: pointer;
  box-shadow: var(--shadow); display: flex; align-items: center; gap: 0.85rem;
  transition: transform 0.12s, border-color 0.12s;
}
.nav-card-lg:active { transform: scale(0.98); }
.nav-card-lg .nc-icon { font-size: 1.8em; }
.nav-card-lg .nc-title { font-family: 'Noto Serif KR', serif; font-weight: 600; font-size: 1.05em; color: var(--primary); }
.nav-card-lg .nc-sub { font-size: 0.78em; color: var(--text-muted); margin-top: 0.15rem; }
.nav-card-grid { padding: 0.15rem 0 1rem; }

.home-links { display: none; }

.home-youtube-wrap { padding: 0 1rem 0.75rem; text-align: center; }
.home-youtube {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.55rem 1rem; border-radius: 999px;
  background: #ff0000; color: #fff; text-decoration: none;
  font-size: 0.88em; font-weight: 600; box-shadow: 0 2px 8px rgba(255, 0, 0, 0.25);
  transition: transform 0.15s, box-shadow 0.15s;
}
.home-youtube:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(255, 0, 0, 0.35); }
.home-youtube-icon { font-size: 0.85em; }

.pwa-install {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 250;
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom, 0));
  background: linear-gradient(to top, var(--bg) 85%, transparent);
}
.pwa-install.hidden { display: none; }
.pwa-install-inner {
  display: flex; align-items: center; gap: 0.75rem;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.85rem 1rem; box-shadow: var(--shadow);
  max-width: 480px; margin: 0 auto;
}
.pwa-install-icon img { border-radius: 10px; display: block; }
.pwa-install-text { flex: 1; min-width: 0; }
.pwa-install-title { font-weight: 700; font-size: 0.95em; color: var(--primary); }
.pwa-install-desc { font-size: 0.78em; color: var(--text-muted); margin-top: 0.15rem; line-height: 1.4; }
.pwa-ios-hint { font-size: 0.75em; color: var(--text-muted); margin-top: 0.35rem; line-height: 1.45; }
.pwa-install-actions { display: flex; flex-direction: column; gap: 0.35rem; flex-shrink: 0; }
.pwa-install-actions .btn { white-space: nowrap; padding: 0.45rem 0.75rem; font-size: 0.82em; }

.search-box {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--card); border: 1px solid var(--border); border-radius: 999px;
  margin: 0.75rem 1rem; padding: 0.55rem 1rem;
}
.search-input {
  flex: 1; border: none; background: transparent; font-family: inherit;
  font-size: 0.92em; color: var(--text); outline: none;
}

.sub-nav { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0.75rem 1rem 0; }
.sub-nav-btn {
  background: var(--card); border: 1px solid var(--border); border-radius: 999px;
  padding: 0.35rem 0.75rem; font-size: 0.78em; cursor: pointer; color: var(--text);
}
.sub-nav-btn.act { background: var(--primary); color: #fff; border-color: var(--primary); }
.list-disclaimer {
  width: 100%; margin: 0.35rem 0 0; padding: 0 0.25rem;
  font-size: 0.75em; color: var(--text-muted); line-height: 1.45;
}

.video-item {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  margin: 0.5rem 1rem; overflow: hidden; box-shadow: var(--shadow);
}
.video-item-inner { display: flex; gap: 0.75rem; padding: 0.75rem; cursor: pointer; }
.video-thumb { width: 96px; height: 54px; border-radius: 6px; object-fit: cover; flex-shrink: 0; background: var(--bg2); }
.video-info { flex: 1; min-width: 0; }
.video-scripture {
  font-family: 'Noto Serif KR', serif;
  font-weight: 600; font-size: 0.92em; line-height: 1.35; color: var(--primary);
}
.video-scripture.empty { color: var(--text-muted); font-weight: 500; font-family: 'Noto Sans KR', sans-serif; font-size: 0.82em; }
.video-title { font-weight: 500; font-size: 0.88em; line-height: 1.35; color: var(--text); margin-top: 0.2rem; }
.video-meta { font-size: 0.75em; color: var(--text-muted); margin-top: 0.2rem; line-height: 1.4; }
.video-actions { display: flex; gap: 0.35rem; padding: 0 0.75rem 0.65rem; align-items: center; }
.icon-btn { background: none; border: none; cursor: pointer; font-size: 1.1em; opacity: 0.7; padding: 0.2rem; }
.icon-btn:hover { opacity: 1; }
.share-btn-kakao {
  background: #FEE500; color: #3C1E1E; border: none; border-radius: 6px;
  font-family: inherit; font-size: 0.78em; font-weight: 700;
  padding: 0.3rem 0.7rem; cursor: pointer; line-height: 1.2;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}
.share-btn-kakao:active { transform: scale(0.97); }

.group-header {
  display: flex; align-items: center; gap: 0.5rem; padding: 0.75rem 1rem;
  cursor: pointer; font-weight: 600; font-size: 0.9em; color: var(--primary);
}
.group-children { display: none; }
.group-children.open { display: block; }
.group-children .video-item { margin-left: 1.5rem; margin-right: 1rem; }

.section-label { font-size: 0.72em; letter-spacing: 0.08em; color: var(--text-muted); padding: 1rem 1rem 0.35rem; text-transform: uppercase; }

.app-footer {
  text-align: center; padding: 1.5rem 1rem 2rem; font-size: 0.75em; color: var(--text-muted); line-height: 1.6;
  border-top: 1px solid var(--border); margin-top: auto;
}

.dark-toggle, .settings-btn { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 0.35rem 0.5rem; cursor: pointer; font-size: 1em; }

.login-box { background: var(--card); border-radius: var(--radius); padding: 1.5rem; margin: 1rem; max-width: 360px; width: 100%; box-shadow: var(--shadow); }
.form-group { margin-bottom: 0.85rem; }
.form-label { display: block; font-size: 0.78em; color: var(--text-muted); margin-bottom: 0.3rem; }
.form-input {
  width: 100%; background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); font-family: inherit; font-size: 0.92em; padding: 0.6rem 0.8rem; outline: none;
}
.form-input:focus { border-color: var(--primary); }

.modal-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.45); z-index: 200;
  align-items: center; justify-content: center; padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal { background: var(--card); border-radius: var(--radius); padding: 1.25rem; max-width: 420px; width: 100%; max-height: 85vh; overflow-y: auto; }

.toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: #fff; padding: 0.6rem 1.2rem; border-radius: 999px;
  font-size: 0.85em; z-index: 300; opacity: 0; transition: opacity 0.25s; pointer-events: none;
}
.toast.show { opacity: 1; }

.adm-box { margin: 0 1rem 1rem; max-width: none; }
.adm-note, .adm-hint { padding: 0 1rem; font-size: 0.78em; color: var(--text-muted); line-height: 1.5; margin-bottom: 0.5rem; }
.adm-grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.5rem; }
.adm-row { display: flex; gap: 0.5rem; margin-top: 0.5rem; flex-wrap: wrap; }
.adm-menu-row { display: flex; align-items: center; gap: 0.5rem; padding: 0.35rem 0; font-size: 0.9em; }
.adm-menu-sub { padding-left: 1rem; font-size: 0.92em; }
.adm-sub-group { margin-bottom: 0.75rem; }
.adm-sub-title { margin: 0.35rem 0 0.25rem; font-size: 0.88em; }
.adm-check-row { display: flex; align-items: center; gap: 0.5rem; font-size: 0.88em; margin-bottom: 0.75rem; }
.adm-im-list { max-height: 360px; overflow-y: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.adm-im-row { display: flex; align-items: center; gap: 0.5rem; padding: 0.45rem 0.75rem; font-size: 0.85em; border-bottom: 1px solid var(--border); }
.adm-im-row:last-child { border-bottom: none; }
.adm-im-row.is-hidden-speaker { opacity: 0.72; background: var(--bg2); }
.adm-im-name { flex: 1; min-width: 0; }
.adm-im-count { flex-shrink: 0; color: var(--text-muted); font-size: 0.92em; }
.adm-im-toggle { flex-shrink: 0; padding: 0.25rem 0.55rem; font-size: 0.78em; }
.adm-check { font-size: 0.75em; margin-left: auto; display: flex; align-items: center; gap: 0.25rem; }
.admin-tabs { position: sticky; top: 0; background: var(--bg); z-index: 10; padding-bottom: 0.5rem; }
.video-item.is-hidden { opacity: 0.55; }
.badge-custom, .badge-hidden { font-size: 0.72em; font-weight: 500; padding: 0.1em 0.4em; border-radius: 4px; vertical-align: middle; }
.badge-custom { background: rgba(201, 162, 39, 0.2); color: var(--accent, #c9a227); }
.badge-hidden { background: rgba(100, 116, 139, 0.2); color: var(--text-muted); }
.icon-btn.adm { font-size: 0.95em; }

@media print {
  .topbar, .sub-nav, .video-actions, .app-footer, .home-links, .home-youtube-wrap, .pwa-install, .btn-back { display: none !important; }
  .video-item { break-inside: avoid; box-shadow: none; border: 1px solid #ccc; }
}