/* ─── TOKENS ─────────────────────────────────────────────── */
:root {
  --bg:          #ffffff;
  --bg-2:        #f5faf7;
  --surface:     rgba(255,255,255,0.4);
  --surface-2:   rgba(255,255,255,0.6);
  --surface-3:   rgba(255,255,255,0.78);
  --border:      rgba(255,255,255,0.75);
  --border-2:    rgba(26,122,76,0.3);
  --gold:        #1a7a4c;
  --gold-light:  #22a366;
  --gold-dim:    rgba(26,122,76,.12);
  --gold-glow:   rgba(26,122,76,.22);
  --text:        #141715;
  --text-2:      rgba(20,23,21,0.78);
  --text-3:      rgba(20,23,21,0.65);
  --danger:      #e05c5c;
  --success:     #4caf7d;
  --font-display:'Barlow Condensed', sans-serif;
  --font-body:   'Barlow', system-ui, sans-serif;
  --r-sm:  6px;  --r-md: 12px; --r-lg: 18px;
  --r-xl:  26px; --r-pill:999px;
  --ease: cubic-bezier(.4,0,.2,1);
  --dur:  200ms;
}

[data-theme="dark"] {
  --bg:          #0d100e;
  --bg-2:        #10201a;
  --surface:     rgba(255,255,255,0.06);
  --surface-2:   rgba(255,255,255,0.1);
  --surface-3:   rgba(255,255,255,0.16);
  --border:      rgba(255,255,255,0.12);
  --border-2:    rgba(34,163,102,0.3);
  --text:        #eef5f0;
  --text-2:      rgba(238,245,240,0.75);
  --text-3:      rgba(238,245,240,0.55);
}
[data-theme="dark"] body { background: linear-gradient(180deg, #0d100e 0%, #10201a 100%); }
[data-theme="dark"] .site-header,
[data-theme="dark"] .talsu-topbar,
[data-theme="dark"] .talsu-bottom-nav { background: rgba(13,16,14,0.7); }
[data-theme="dark"] .talsu-panel { background: linear-gradient(180deg, #0d100e 0%, #10201a 100%); }
[data-theme="dark"] .modal-backdrop { background: rgba(0,0,0,0.7); }

/* ─── RESET ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 55%, #eaf5ef 100%);
  color: var(--text);
  line-height: 1.65;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  padding-top: 60px;
  padding-bottom: 80px;
}

body::before {
  content: '';
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(ellipse 70% 50% at 15% 0%,  rgba(26,122,76,.1) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 85% 100%, rgba(34,163,102,.08) 0%, transparent 50%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
}

.container { width: 100%; max-width: 1280px; margin-inline: auto; padding-inline: 2rem; }

/* ─── HEADER ─────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.5);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center;
  justify-content: space-between; gap: 1rem;
  height: 68px;
}

.brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; flex-shrink: 0; }
.brand-mark {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 100%);
  border-radius: var(--r-md); display: grid; place-items: center;
  font-size: 1.15rem; color: #fff;
  box-shadow: 0 2px 16px var(--gold-glow), inset 0 1px 0 rgba(255,255,255,.4);
  transition: transform var(--dur) var(--ease); flex-shrink: 0;
}
.brand:hover .brand-mark { transform: rotate(-6deg) scale(1.06); }
.brand-name { font-family: var(--font-display); font-size: 1.15rem; color: var(--text); letter-spacing: -0.01em; display: block; }
.brand-sub  { font-size: 0.65rem; color: var(--text-2); text-transform: uppercase; letter-spacing: 0.1em; display: block; margin-top: 1px; }

.header-actions { display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }

.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--font-body); font-size: 0.85rem; font-weight: 600;
  border: none; border-radius: var(--r-md); cursor: pointer;
  padding: 0.5rem 1.1rem;
  transition: all var(--dur) var(--ease);
  text-decoration: none; white-space: nowrap;
  letter-spacing: 0.01em;
}
.btn:active { transform: scale(.97); }
.btn-gold {
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 100%);
  color: #fff; font-weight: 700;
  box-shadow: 0 2px 12px var(--gold-glow);
}
.btn-gold:hover { filter: brightness(1.08); transform: translateY(-1px); box-shadow: 0 4px 20px var(--gold-glow); }
.btn-ghost { background: transparent; color: var(--text-2); border: 1px solid var(--border-2); }
.btn-ghost:hover { background: var(--surface-2); color: var(--text); border-color: var(--text-3); }
.btn-icon { padding: 0.5rem; border-radius: var(--r-md); font-size: 1rem; }

.user-zone { position: relative; display: flex; align-items: center; gap: 0.5rem; }

.user-pill {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--surface-2); border: 1px solid var(--border-2);
  border-radius: var(--r-pill); padding: 3px 0.75rem 3px 3px;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.user-pill:hover { border-color: rgba(26,122,76,.4); box-shadow: 0 0 0 3px var(--gold-dim); }
.user-avatar {
  width: 28px; height: 28px;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  border-radius: 50%; display: grid; place-items: center;
  font-size: 0.72rem; font-weight: 700; color: #fff; flex-shrink: 0;
}
.user-name {
  font-size: 0.78rem; font-weight: 500; color: var(--text-2);
  max-width: 110px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.user-chevron {
  font-size: 0.75rem; color: var(--text-3); margin-left: 2px;
  transition: transform var(--dur) var(--ease); flex-shrink: 0;
}
.user-zone.open .user-chevron { transform: rotate(180deg); }

.user-dropdown {
  position: absolute; top: calc(100% + 10px); right: 0;
  background: var(--surface); border: 1px solid var(--border-2);
  border-radius: var(--r-lg); min-width: 200px;
  box-shadow: 0 16px 48px rgba(10,40,25,.55), 0 0 0 1px rgba(26,122,76,.08);
  overflow: hidden;
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease), transform var(--dur) var(--ease);
  z-index: 200;
}
.user-zone.open .user-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }

.user-dropdown-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(26,122,76,.06) 0%, transparent 100%);
}
.user-dropdown-email { font-size: 0.75rem; color: var(--text-3); margin-top: 2px; }

.dropdown-item {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.7rem 1rem; font-size: 0.85rem; color: var(--text-2);
  cursor: pointer; transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.dropdown-item:hover { background: var(--surface-2); color: var(--text); }
.dropdown-item i { font-size: 1rem; flex-shrink: 0; }
.dropdown-item.danger { color: #e07070; }
.dropdown-item.danger:hover { background: rgba(224,92,92,.08); color: var(--danger); }
.dropdown-divider { height: 1px; background: var(--border); margin: 2px 0; }

/* ─── HERO ───────────────────────────────────────────────── */
.hero { padding: 5rem 2rem 3.5rem; text-align: center; position: relative; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: var(--gold-dim); border: 1px solid rgba(26,122,76,.25);
  border-radius: var(--r-pill); padding: 0.25rem 1rem;
  font-size: 0.72rem; font-weight: 600; color: var(--gold);
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1.25rem;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  line-height: 1.08; letter-spacing: -0.03em;
  color: var(--text); max-width: 720px;
  margin-inline: auto; margin-bottom: 1.1rem;
}
.hero-title em { font-style: italic; color: var(--gold); }
.hero-sub {
  font-size: 1.05rem; color: var(--text-2); max-width: 480px;
  margin-inline: auto; margin-bottom: 2.5rem; font-weight: 300;
}

.hero-stats { display: flex; justify-content: center; gap: 3rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.stat { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.stat-number { font-family: var(--font-display); font-size: 2rem; color: var(--gold); line-height: 1; }
.stat-label  { font-size: 0.7rem; color: var(--text-2); font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; }

/* ─── PREMIUM SEARCH BAR ─────────────────────────────────── */
.search-hero { max-width: 660px; margin-inline: auto; position: relative; }
.search-hero-wrap {
  display: flex; align-items: center;
  background: var(--surface); border: 1.5px solid var(--border-2);
  border-radius: var(--r-xl); padding: 5px 5px 5px 1.2rem; gap: 0.6rem;
  box-shadow: 0 8px 40px rgba(10,40,25,.35), 0 1px 0 rgba(255,255,255,.03) inset;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.search-hero-wrap:focus-within {
  border-color: var(--gold);
  box-shadow: 0 8px 40px rgba(10,40,25,.5), 0 0 0 4px var(--gold-dim);
}
.search-hero-icon { color: var(--gold); font-size: 1.1rem; flex-shrink: 0; pointer-events: none; opacity: .7; }
.search-hero-input {
  flex: 1; background: transparent; border: none; outline: none;
  color: var(--text); font-family: var(--font-body); font-size: 0.95rem;
  min-width: 0;
}
.search-hero-input::placeholder { color: var(--text-3); }

.search-kbd-hint { display: flex; align-items: center; gap: 3px; flex-shrink: 0; }
.kbd {
  background: var(--surface-2); border: 1px solid var(--border-2);
  border-radius: 5px; padding: 2px 6px;
  font-size: 0.68rem; color: var(--text-3);
  font-family: var(--font-body); font-weight: 600;
}

.search-divider {
  width: 1px; height: 22px;
  background: var(--border-2); flex-shrink: 0;
}

.search-course-chip {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--gold-dim); border: 1px solid rgba(26,122,76,.25);
  border-radius: var(--r-pill); padding: 2px 8px;
  font-size: 0.72rem; color: var(--gold); font-weight: 600;
  cursor: pointer; flex-shrink: 0;
  transition: background var(--dur) var(--ease);
}
.search-course-chip:hover { background: rgba(26,122,76,.2); }
.search-course-chip .chip-x { font-size: 0.65rem; opacity: .7; }

.search-hero-btn {
  background: linear-gradient(135deg, var(--gold), #0e5c38); color: #000;
  border: none; border-radius: var(--r-lg); padding: 0.55rem 1.3rem;
  font-family: var(--font-body); font-size: 0.85rem; font-weight: 700;
  cursor: pointer; transition: filter var(--dur) var(--ease), transform var(--dur) var(--ease);
  white-space: nowrap; display: flex; align-items: center; gap: 0.3rem; flex-shrink: 0;
  letter-spacing: 0.01em;
}
.search-hero-btn:hover { filter: brightness(1.1); transform: scale(1.02); }

.search-suggestions {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0;
  background: var(--surface); border: 1px solid var(--border-2);
  border-radius: var(--r-lg); overflow: hidden;
  box-shadow: 0 16px 48px rgba(10,40,25,.55), 0 0 0 1px rgba(26,122,76,.06);
  z-index: 50; display: none;
}
.search-suggestions.open { display: block; }
.sugg-section-title {
  font-size: 0.67rem; font-weight: 700; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.1em;
  padding: 0.65rem 1rem 0.3rem;
}
.sugg-item {
  display: flex; align-items: center; gap: 0.65rem;
  padding: 0.6rem 1rem; cursor: pointer;
  transition: background var(--dur) var(--ease);
  font-size: 0.87rem; color: var(--text-2);
}
.sugg-item:hover { background: var(--surface-2); color: var(--text); }
.sugg-item i { color: var(--gold); font-size: 0.9rem; flex-shrink: 0; }
.sugg-divider { height: 1px; background: var(--border); margin: 2px 0; }

/* ─── LIBRARY SECTION ────────────────────────────────────── */
.library-section { padding-bottom: 4rem; }

.library-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; margin-bottom: 1.5rem; flex-wrap: wrap;
}
.lib-title-row { display: flex; align-items: center; gap: 0.75rem; }
.section-title { font-family: var(--font-display); font-size: 1.6rem; letter-spacing: -0.02em; }
.doc-badge {
  font-size: 0.75rem; color: var(--text-2);
  background: var(--surface-2); border: 1px solid var(--border-2);
  border-radius: var(--r-pill); padding: 2px 0.65rem; font-weight: 600;
}

.filter-bar {
  display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap;
}
.filter-label {
  font-size: 0.72rem; color: var(--text-3); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em; white-space: nowrap;
}
.filter-pills { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.pill {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-pill); color: var(--text-2);
  font-size: 0.78rem; font-weight: 500; padding: 4px 0.85rem;
  cursor: pointer; transition: all var(--dur) var(--ease);
  font-family: var(--font-body);
}
.pill:hover { border-color: var(--gold); color: var(--gold); }
.pill.active { background: var(--gold); border-color: var(--gold); color: #000; font-weight: 700; }

.sort-select {
  background: var(--surface); border: 1px solid var(--border-2);
  color: var(--text-2); font-family: var(--font-body);
  font-size: 0.78rem; padding: 4px 0.75rem;
  border-radius: var(--r-pill); cursor: pointer; outline: none;
  transition: border-color var(--dur) var(--ease);
}
.sort-select:focus { border-color: var(--gold); }
.sort-select option { background: var(--surface-2); }

/* ─── PDF GRID ───────────────────────────────────────────── */
.pdf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.4rem;
}

.pdf-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); overflow: hidden;
  display: flex; flex-direction: column;
  box-shadow: 0 2px 16px rgba(10,40,25,.3);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  position: relative;
  animation: fadeUp .45s var(--ease) both;
}
.pdf-card { animation-delay: calc(var(--i, 0) * 55ms); }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
.pdf-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(10,40,25,.45), 0 0 0 1px rgba(26,122,76,.15);
  border-color: rgba(26,122,76,.2);
}

.pdf-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(26,122,76,.3) 60%, transparent 100%);
  opacity: 0; transition: opacity var(--dur) var(--ease);
}
.pdf-card:hover::before { opacity: 1; }

.card-thumb {
  height: 130px; background: var(--surface-2);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.card-thumb-bg {
  position: absolute; inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(26,122,76,.08) 0%, transparent 60%);
}
.card-thumb-icon {
  font-size: 3.2rem; color: var(--gold); opacity: .55; position: relative; z-index: 1;
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.pdf-card:hover .card-thumb-icon { transform: scale(1.12) rotate(-3deg); opacity: .8; }

.card-course-badge {
  position: absolute; bottom: 0.65rem; left: 0.65rem;
  background: rgba(8,11,16,.8); border: 1px solid rgba(26,122,76,.25);
  border-radius: var(--r-sm); font-size: 0.66rem; font-weight: 700;
  color: var(--gold); padding: 2px 0.55rem;
  text-transform: uppercase; letter-spacing: 0.05em;
  backdrop-filter: blur(8px);
  max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.card-body {
  padding: 1.1rem 1.1rem 0.75rem;
  flex: 1; display: flex; flex-direction: column; gap: 0.6rem;
}
.card-title {
  font-family: var(--font-display); font-size: 1rem;
  line-height: 1.3; color: var(--text); letter-spacing: -0.01em;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card-desc {
  font-size: 0.8rem; color: var(--text-2); line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  flex: 1;
}
.card-meta {
  display: flex; align-items: center; gap: 1rem;
  font-size: 0.72rem; color: var(--text-3);
}
.card-meta-item { display: flex; align-items: center; gap: 3px; }

.card-footer {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.7rem 1.1rem; border-top: 1px solid var(--border);
}

.card-download-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 0.4rem;
  background: linear-gradient(135deg, var(--gold), #0e5c38);
  color: #000; font-family: var(--font-body); font-size: 0.82rem; font-weight: 700;
  border: none; border-radius: var(--r-md); padding: 0.55rem 0.75rem;
  cursor: pointer; transition: filter var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  text-decoration: none; letter-spacing: 0.01em;
  box-shadow: 0 2px 10px var(--gold-glow);
}
.card-download-btn:hover {
  filter: brightness(1.1); transform: translateY(-1px);
  box-shadow: 0 4px 18px var(--gold-glow);
}

.card-delete {
  display: none; align-items: center; justify-content: center;
  width: 36px; height: 36px; flex-shrink: 0;
  background: transparent; border: 1px solid var(--border-2);
  border-radius: var(--r-md); color: var(--text-3);
  cursor: pointer; font-size: 0.95rem;
  transition: all var(--dur) var(--ease);
}
.card-delete:hover { color: var(--danger); border-color: var(--danger); background: rgba(224,92,92,.08); }
.is-admin .card-delete { display: flex; }

/* ─── EMPTY STATE ────────────────────────────────────────── */
.empty-state { grid-column: 1/-1; text-align: center; padding: 5rem 2rem; }
.empty-icon  { font-size: 3.5rem; color: var(--text-3); margin-bottom: 1rem; }
.empty-title { font-family: var(--font-display); font-size: 1.35rem; color: var(--text-2); margin-bottom: 0.4rem; }
.empty-sub   { font-size: 0.87rem; color: var(--text-3); }

/* ─── SKELETONS ──────────────────────────────────────────── */
.skeleton { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; }
.skel-thumb { height: 130px; background: var(--surface-2); }
.skel-body  { padding: 1.1rem; display: flex; flex-direction: column; gap: 0.7rem; }
.skel-line  { height: 13px; border-radius: var(--r-sm); background: var(--surface-2); animation: pulse 1.6s ease-in-out infinite; }
.skel-line.w-80 { width: 80%; } .skel-line.w-55 { width: 55%; } .skel-line.w-70 { width: 70%; }
.skel-footer { height: 52px; background: var(--surface-2); border-top: 1px solid var(--border); animation: pulse 1.6s ease-in-out infinite; animation-delay: .3s; }
@keyframes pulse { 0%,100%{opacity:.4} 50%{opacity:.9} }

/* ─── MODALS ─────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(20,23,21,.72);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  z-index: 200; display: grid; place-items: center; padding: 1rem;
  opacity: 0; visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
}
.modal-backdrop.open { opacity: 1; visibility: visible; }
.modal {
  background: var(--surface); border: 1px solid var(--border-2);
  border-radius: var(--r-xl);
  box-shadow: 0 24px 64px rgba(10,40,25,.6), 0 0 0 1px rgba(26,122,76,.08);
  width: 100%; max-width: 480px;
  transform: translateY(20px) scale(.98);
  transition: transform var(--dur) var(--ease); overflow: hidden;
}
.modal-backdrop.open .modal { transform: translateY(0) scale(1); }

.modal-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 1.5rem 1.5rem 1rem; border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(26,122,76,.04) 0%, transparent 100%);
}
.modal-title { font-family: var(--font-display); font-size: 1.3rem; letter-spacing: -0.02em; }
.modal-sub   { font-size: 0.8rem; color: var(--text-2); margin-top: 2px; }
.modal-close {
  background: transparent; border: 1px solid var(--border-2); color: var(--text-2);
  cursor: pointer; width: 30px; height: 30px; border-radius: var(--r-md);
  display: grid; place-items: center; font-size: 0.9rem; flex-shrink: 0;
  transition: all var(--dur) var(--ease);
}
.modal-close:hover { background: var(--surface-2); color: var(--text); }
.modal-body   { padding: 1.5rem; display: flex; flex-direction: column; gap: 1rem; max-height: 70vh; overflow-y: auto; }
.modal-footer {
  display: flex; gap: 0.6rem; justify-content: flex-end;
  padding: 1rem 1.5rem 1.5rem;
}
.modal-footer .btn { min-width: 90px; justify-content: center; }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 0.78rem; font-weight: 600; color: var(--text-2); letter-spacing: 0.04em; text-transform: uppercase; }
.field-req::after { content: ' *'; color: var(--gold); }
.field input, .field textarea {
  background: var(--surface-2); border: 1px solid var(--border-2);
  border-radius: var(--r-md); color: var(--text);
  font-family: var(--font-body); font-size: 0.9rem;
  padding: 0.65rem 0.9rem; outline: none; width: 100%;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); }
.field input:focus, .field textarea:focus {
  border-color: var(--gold); box-shadow: 0 0 0 3px var(--gold-dim);
}
.field textarea { resize: vertical; min-height: 80px; }
.field-err { font-size: 0.75rem; color: var(--danger); display: none; }
.field.err input, .field.err textarea { border-color: var(--danger); box-shadow: 0 0 0 3px rgba(224,92,92,.12); }
.field.err .field-err { display: block; }

.drop-zone {
  border: 2px dashed var(--border-2); border-radius: var(--r-lg);
  padding: 1.8rem 1.5rem; text-align: center; cursor: pointer;
  transition: all var(--dur) var(--ease); position: relative;
}
.drop-zone:hover, .drop-zone.dragover { border-color: var(--gold); background: var(--gold-dim); }
.drop-zone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }
.drop-ico  { font-size: 2rem; color: var(--gold); margin-bottom: 0.6rem; }
.drop-text { font-size: 0.87rem; color: var(--text-2); font-weight: 500; }
.drop-hint { font-size: 0.72rem; color: var(--text-3); margin-top: 2px; }
.drop-sel  { font-size: 0.78rem; color: var(--success); font-weight: 600; margin-top: 0.4rem; display: none; }

.prog-wrap { display: none; flex-direction: column; gap: 0.4rem; }
.prog-wrap.on { display: flex; }
.prog-label { display: flex; justify-content: space-between; font-size: 0.75rem; color: var(--text-2); }
.prog-track { height: 5px; background: var(--surface-2); border-radius: var(--r-pill); overflow: hidden; }
.prog-bar   { height: 100%; background: linear-gradient(90deg, var(--gold), var(--gold-light)); width: 0%; transition: width .3s var(--ease); border-radius: var(--r-pill); }

/* ─── TOAST ──────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 5.5rem; left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--surface); border: 1px solid var(--border-2);
  border-radius: var(--r-lg); padding: 0.85rem 1.2rem;
  display: flex; align-items: center; gap: 0.65rem;
  min-width: 280px; max-width: 88vw;
  box-shadow: 0 12px 40px rgba(10,40,25,.5); z-index: 500;
  font-size: 0.87rem; font-weight: 500;
  opacity: 0; pointer-events: none;
  transition: opacity .35s var(--ease), transform .35s var(--ease);
}
.toast.show {
  opacity: 1; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.toast.success { border-color: rgba(76,175,125,.3); color: var(--success); }
.toast.error   { border-color: rgba(224,92,92,.3);   color: var(--danger); }
.toast.info    { border-color: rgba(26,122,76,.3);  color: var(--gold); }

/* ─── FOOTER ─────────────────────────────────────────────── */
.site-footer { margin-top: 5rem; border-top: 1px solid var(--border); padding: 2.5rem 0 2rem; }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; text-align: center; }
.footer-text { font-size: 0.78rem; color: var(--text-3); }
.footer-text a { color: var(--gold); text-decoration: none; }
.footer-text a:hover { text-decoration: underline; }

/* ─── SPINNER ────────────────────────────────────────────── */
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 768px) {
  .brand-sub { display: none; }
  .hero { padding: 3rem 1.5rem 2.5rem; }
  .container { padding-inline: 1.25rem; }
  .pdf-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
  .library-header { flex-direction: column; align-items: flex-start; }
  .search-kbd-hint { display: none; }
}

@media (max-width: 540px) {
  .hero-stats { gap: 1.5rem; }
  .pdf-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
  .modal { border-radius: var(--r-lg); }
  .card-title { font-size: 0.9rem; }
  .card-desc  { display: none; }
  .header-inner { gap: 0.5rem; }
  .btn { padding: 0.45rem 0.75rem; font-size: 0.8rem; }
}

@media (max-width: 380px) {
  .pdf-grid { grid-template-columns: 1fr; }
  .brand-name { font-size: 1rem; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* ─── PAGE LOADER ────────────────────────────────────────── */
#pageLoader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2rem;
  transition: opacity 0.55s var(--ease), visibility 0.55s var(--ease);
}
#pageLoader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.loader-graphic {
  position: relative; width: 88px; height: 88px;
}

.loader-ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 2.5px solid transparent;
  border-top-color: var(--gold);
  border-right-color: rgba(26,122,76,.35);
  animation: loaderSpin 1s linear infinite;
}
.loader-ring-2 {
  position: absolute; inset: 10px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-bottom-color: var(--gold-light);
  border-left-color: rgba(26,122,76,.2);
  animation: loaderSpin 1.6s linear infinite reverse;
}
.loader-disc {
  width: 46px; height: 46px; border-radius: 50%;
  background: radial-gradient(circle, rgba(26,122,76,.18) 0%, rgba(26,122,76,.04) 60%, transparent 100%);
  border: 1px solid rgba(26,122,76,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.35rem; color: var(--gold);
  animation: loaderPulse 2s ease-in-out infinite;
}
@keyframes loaderSpin  { to { transform: rotate(360deg); } }
@keyframes loaderPulse { 0%,100%{opacity:.6; transform:scale(1)} 50%{opacity:1; transform:scale(1.06)} }

.loader-text {
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
}
.loader-title {
  font-family: var(--font-display);
  font-size: 1.15rem; color: var(--text); letter-spacing: -0.01em;
}
.loader-sub {
  font-size: 0.75rem; color: var(--text-3); letter-spacing: 0.06em;
  text-transform: uppercase; font-weight: 600;
}
.loader-dots { display: inline-flex; gap: 4px; margin-left: 2px; }
.loader-dots span {
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--gold); opacity: 0.3;
  animation: dotBounce 1.2s ease-in-out infinite;
}
.loader-dots span:nth-child(2) { animation-delay: 0.2s; }
.loader-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes dotBounce { 0%,80%,100%{opacity:.3; transform:scale(.8)} 40%{opacity:1; transform:scale(1.2)} }

.loader-bar-wrap {
  width: 160px; height: 3px;
  background: var(--surface-2); border-radius: var(--r-pill); overflow: hidden;
}
.loader-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  border-radius: var(--r-pill);
  width: 0%; animation: loaderBarFill 2.2s var(--ease) forwards;
}
@keyframes loaderBarFill { 0%{width:0%} 60%{width:72%} 100%{width:92%} }

/* ─── LAZY-LOAD CARD ENTRANCE ────────────────────────────── */
.pdf-card {
  animation: none !important;
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.42s var(--ease),
    transform 0.42s var(--ease),
    box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}
.pdf-card.card-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════════
   TALSUUDUS MENU BAR
══════════════════════════════════════════ */

.talsu-topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 150;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; height: 60px;
  background: rgba(255,255,255,0.4);
  border-bottom: 1px solid rgba(255,255,255,0.75);
  box-shadow: 0 8px 32px rgba(10,40,25,0.18);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
}
.talsu-logo {
  display: flex; align-items: center; gap: 10px; text-decoration: none;
}
.talsu-logo-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, #22a366, #1a7a4c);
  border: 1.5px solid rgba(255,255,255,0.75);
  box-shadow: 0 4px 10px rgba(90,60,200,0.3);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; flex-shrink: 0;
}
.talsu-logo-text { color: #141715; font-weight: 700; font-size: 16px; letter-spacing: 0.3px; }
.talsu-logo-text span { color: #1a7a4c; }

.talsu-topbar-right {
  display: flex; align-items: center; gap: 8px;
}

.talsu-action-btn {
  height: 36px; border-radius: 10px !important;
  font-size: 0.82rem !important; padding: 0 14px !important;
}
@media (max-width: 420px) {
  .talsu-action-btn .btn-label { display: none; }
  .talsu-action-btn { padding: 0 10px !important; }
}

.talsu-topbar-right .user-zone { position: relative; }
.talsu-topbar-right .user-dropdown { top: calc(100% + 14px); }

.talsu-menu-btn {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(255,255,255,0.4);
  border: 1.5px solid rgba(255,255,255,0.75);
  cursor: pointer; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 5px; transition: background 0.2s; flex-shrink: 0;
}
.talsu-menu-btn:hover { background: rgba(26,122,76,0.14); }
.talsu-menu-btn span { display: block; height: 2px; background: #141715; border-radius: 2px; }
.talsu-menu-btn span:nth-child(1) { width: 18px; }
.talsu-menu-btn span:nth-child(2) { width: 18px; }
.talsu-menu-btn span:nth-child(3) { width: 12px; align-self: flex-end; }

.talsu-bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
  display: flex; background: rgba(255,255,255,0.4);
  border-top: 1px solid rgba(255,255,255,0.75);
  box-shadow: 0 -8px 32px rgba(10,40,25,0.18);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  padding: 10px 0 14px;
}
.talsu-nav-item {
  flex: 1; background: none; border: none; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 5px; padding: 0;
}
.talsu-nav-icon {
  width: 26px; height: 26px; border-radius: 7px;
  background: rgba(26,122,76,0.08);
  border: 1.5px solid rgba(26,122,76,0.18);
  transition: all 0.2s; display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.talsu-nav-label {
  font-size: 11px; font-weight: 500;
  color: rgba(20,23,21,0.68); letter-spacing: 0.2px; transition: color 0.2s;
}
.talsu-nav-item.active .talsu-nav-icon {
  background: rgba(26,122,76,0.22); border-color: rgba(26,122,76,0.5);
  box-shadow: 0 0 10px rgba(26,122,76,0.25);
}
.talsu-nav-item.active .talsu-nav-label { color: #1a7a4c; font-weight: 700; }
[data-theme="dark"] .talsu-nav-label { color: rgba(238,245,240,0.68); }

.talsu-overlay {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(20,23,21,0.72);
  opacity: 0; pointer-events: none; transition: opacity 0.28s ease;
}
.talsu-overlay.show { opacity: 1; pointer-events: all; }

.talsu-panel {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: 78%; max-width: 320px;
  background: linear-gradient(180deg, #f7fbf9 0%, #eef7f1 100%); z-index: 400;
  display: flex; flex-direction: column;
  transform: translateX(105%);
  transition: transform 0.32s cubic-bezier(0.32,0,0.15,1);
  box-shadow: -12px 0 40px rgba(10,40,25,0.3);
}
.talsu-panel.open { transform: translateX(0); }

.talsu-panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 20px 16px;
  border-bottom: 1px solid rgba(26,122,76,0.22); flex-shrink: 0;
}
.talsu-panel-title { color: #1a7a4c; font-size: 22px; font-weight: 700; }
.talsu-close-btn {
  width: 36px; height: 36px; border-radius: 10px;
  background: rgba(255,255,255,0.4);
  border: 1.5px solid rgba(255,255,255,0.75);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  color: #141715; font-size: 17px; transition: background 0.2s;
}
.talsu-close-btn:hover { background: rgba(26,122,76,0.14); }

.talsu-menu-list {
  flex: 1; overflow-y: auto; padding: 12px 14px;
  display: flex; flex-direction: column; gap: 8px; scrollbar-width: none;
}
.talsu-menu-list::-webkit-scrollbar { display: none; }

.talsu-menu-item {
  display: flex; align-items: center; gap: 14px;
  padding: 13px 14px; border-radius: 14px;
  background: rgba(255,255,255,0.4);
  border: 1.5px solid rgba(255,255,255,0.75);
  cursor: pointer; width: 100%; text-align: left;
  transition: background 0.18s, border-color 0.18s, box-shadow 0.18s;
  text-decoration: none;
}
.talsu-menu-item:hover { background: rgba(255,255,255,0.65); }
.talsu-menu-item.active {
  background: linear-gradient(135deg, #22a366 0%, #1a7a4c 100%);
  border-color: #1a7a4c;
  box-shadow: 0 4px 20px rgba(26,122,76,0.35);
}
.talsu-item-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(26,122,76,0.08);
  border: 1.5px solid rgba(26,122,76,0.18);
  flex-shrink: 0; display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.talsu-menu-item.active .talsu-item-icon {
  background: rgba(255,255,255,0.28); border-color: rgba(255,255,255,0.6);
}
.talsu-item-label {
  flex: 1; color: #141715;
  font-weight: 500; font-size: 15px; letter-spacing: 0.2px;
}
.talsu-menu-item.active .talsu-item-label { color: #fff; font-weight: 700; }
.talsu-chevron { width: 18px; height: 18px; flex-shrink: 0; opacity: 0.35; }
.talsu-menu-item.active .talsu-chevron { opacity: 1; }
/* ── Accessibility: visible keyboard focus ── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2.5px solid #1a7a4c;
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Dark mode toggle button ── */
.theme-toggle {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(255,255,255,0.4);
  border: 1.5px solid rgba(255,255,255,0.75);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: background 0.2s ease;
}
.theme-toggle:hover { background: rgba(26,122,76,0.14); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.12); }
[data-theme="dark"] .theme-toggle:hover { background: rgba(34,163,102,0.2); }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

/* ── WhatsApp floating button ── */
.whatsapp-fab {
  position: fixed; right: 18px; bottom: 96px; z-index: 140;
  width: 54px; height: 54px; border-radius: 50%;
  background: #25D366;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 28px rgba(37,211,102,0.45);
  text-decoration: none;
  transition: transform 0.2s ease;
}
.whatsapp-fab:hover { transform: scale(1.06); }
.whatsapp-fab svg { width: 26px; height: 26px; }