/* ============================================================
   styles.css — Cancionero Peregrino
   Sistema de color científico · Estética juvenil moderna
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,700;1,700&family=Nunito:wght@300;400;600;800;900&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ══════════════════════════════════════════════════════════════
   TOKENS — modo claro
   Base: crema cálida #FDF8F1 · Acento: ámbar #D4922A (HSL 34°)
══════════════════════════════════════════════════════════════ */
:root {
  /* Dorado — color identidad */
  --gold:          #D4922A;
  --gold-light:    #F2B94A;
  --gold-bright:   #FFD060;
  --gold-soft:     #FDE9BB;
  --gold-glow:     rgba(212,146,42,0.22);

  /* Fondos modo claro */
  --bg-page:       #FAF7F2;
  --bg-card:       #FFFFFF;
  --bg-card-hover: #FFFCF7;

  /* Texto modo claro */
  --text-1:        #18120A;
  --text-2:        #5A3E1E;
  --text-3:        #9A7040;

  /* Bordes modo claro */
  --border-1:      #EDD9AE;
  --border-2:      #F4EAD0;

  /* Semánticos — claro */
  --himno-bg:      #E8F5EE; --himno-text: #1A5C38; --himno-border: #9FD4B8;
  --lenta-bg:      #E8EEFF; --lenta-text: #243CA0; --lenta-border: #BACAF8;
  --jubilo-bg:     #EDE8FF; --jubilo-text: #3E2EA0; --jubilo-border: #C0B8F0;

  /* Tipografía */
  --font-display:  'Playfair Display', Georgia, serif;
  --font-body:     'Nunito', 'Segoe UI', sans-serif;

  /* Radios */
  --r-sm:   8px;
  --r-md:   14px;
  --r-lg:   20px;
  --r-xl:   26px;
  --r-pill: 999px;

  /* Sombras */
  --shadow-xs:   0 1px 4px rgba(0,0,0,0.04);
  --shadow-sm:   0 2px 10px rgba(0,0,0,0.06);
  --shadow-md:   0 6px 24px rgba(0,0,0,0.09);
  --shadow-lg:   0 16px 48px rgba(0,0,0,0.13);
  --shadow-gold: 0 6px 24px rgba(212,146,42,0.32);

  --transition: .2s ease;
  --touch-min:  48px;
}

/* ══════════════════════════════════════════════════════════════
   TOKENS — modo oscuro
   Base: índigo-negro #06070E · Complementario del dorado (214°)
   Ratios WCAG: texto 15:1 AAA · oro 9.2:1 AAA
══════════════════════════════════════════════════════════════ */
html.dark {
  --bg-page:       #06070E;
  --bg-card:       #0C0E1C;
  --bg-card-hover: #12142A;

  --text-1:        #EDF0FF;
  --text-2:        #9BA3CC;
  --text-3:        #626A96;

  --border-1:      #1A1E3A;
  --border-2:      #252A50;

  --gold-soft:     #1C1604;
  --gold-glow:     rgba(245,193,74,0.18);

  --himno-bg:      #07120E; --himno-text: #6ECFA8; --himno-border: #0F3020;
  --lenta-bg:      #080D1E; --lenta-text: #8AAAE8; --lenta-border: #141E42;
  --jubilo-bg:     #0D0A20; --jubilo-text: #C0B0F4; --jubilo-border: #241A50;

  --shadow-xs:   0 1px 4px rgba(0,0,0,0.3);
  --shadow-sm:   0 2px 10px rgba(0,0,0,0.4);
  --shadow-md:   0 6px 24px rgba(0,0,0,0.5);
  --shadow-lg:   0 16px 48px rgba(0,0,0,0.6);
  --shadow-gold: 0 6px 24px rgba(245,193,74,0.2);
}

/* ── BASE ────────────────────────────────────────────────────── */
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--bg-page);
  color: var(--text-1);
  min-height: 100vh; min-height: 100dvh;
  display: flex; flex-direction: column;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background .35s ease, color .35s ease;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}
.skip-link {
  position: absolute; top: -100%; left: 1rem;
  background: var(--gold); color: #fff;
  padding: .6rem 1.4rem; border-radius: var(--r-pill);
  font-weight: 800; font-size: .85rem;
  text-decoration: none; z-index: 9999; transition: top .2s;
}
.skip-link:focus { top: 1rem; }

/* ══════════════════════════════════════════════════════════════
   HEADER — hero visual impactante
══════════════════════════════════════════════════════════════ */
.site-header {
  background:
    radial-gradient(ellipse at 15% 60%, rgba(212,146,42,0.35) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 20%, rgba(255,200,80,0.18) 0%, transparent 48%),
    linear-gradient(155deg, #0E0A04 0%, #1E1208 40%, #321C08 70%, #4A2808 100%);
  padding: 3rem 1.4rem 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Textura de puntos sutil */
.site-header::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(255,200,80,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

/* Ola inferior */
.site-header::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 60px;
  background: var(--bg-page);
  clip-path: ellipse(55% 100% at 50% 100%);
  transition: background .35s ease;
}

html.dark .site-header {
  background:
    radial-gradient(ellipse at 15% 60%, rgba(100,80,220,0.3) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 20%, rgba(245,193,74,0.12) 0%, transparent 48%),
    linear-gradient(155deg, #04050C 0%, #06070E 40%, #090A18 70%, #0C0E20 100%);
}
html.dark .site-header::before {
  background-image: radial-gradient(circle, rgba(120,100,255,0.07) 1px, transparent 1px);
}
html.dark .site-header::after { background: var(--bg-page); }

/* Botón tema en header */
.btn-tema--header {
  position: absolute; top: 1rem; right: 1rem; z-index: 10;
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.08);
  border: 1.5px solid rgba(255,200,80,0.2);
  color: rgba(255,220,120,.75); font-size: .95rem;
  cursor: pointer;
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
}
.btn-tema--header:hover {
  background: rgba(212,146,42,0.22);
  border-color: var(--gold-light);
  color: var(--gold-light);
  transform: rotate(22deg) scale(1.08);
}
html.dark .btn-tema--header { border-color: rgba(140,120,255,0.25); color: rgba(180,170,240,.7); }
html.dark .btn-tema--header:hover { background: rgba(100,80,220,0.25); border-color: rgba(180,160,255,.4); color: #C0B8F0; }

.icon-sol  { display: none; }
.icon-luna { display: block; }
html.dark .icon-sol  { display: block; }
html.dark .icon-luna { display: none; }

.header-inner { position: relative; z-index: 1; max-width: 640px; margin: 0 auto; }

.header-icon {
  font-size: 3.4rem; display: block; margin-bottom: .6rem;
  color: var(--gold-light);
  animation: floatDove 3.6s ease-in-out infinite;
  filter: drop-shadow(0 0 20px rgba(242,185,74,0.55));
}
@keyframes floatDove {
  0%, 100% { transform: translateY(0) rotate(-3deg); }
  50%       { transform: translateY(-11px) rotate(3deg); }
}

.church-name {
  display: block;
  font-size: .62rem; font-weight: 900;
  letter-spacing: .35em; text-transform: uppercase;
  color: var(--gold-light); opacity: .85;
  margin-bottom: .8rem;
}

.site-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 9vw, 3.8rem);
  color: #fff; line-height: 1.08; letter-spacing: -.02em;
}
.site-title em { color: var(--gold-bright); font-style: italic; }

.header-tagline {
  margin-top: .8rem;
  font-size: clamp(.82rem, 3vw, .95rem);
  color: rgba(255,255,255,.4);
  font-weight: 300; font-style: italic;
}

.verse-badge {
  display: inline-flex; align-items: center; gap: .45rem;
  margin-top: 1.2rem;
  background: rgba(212,146,42,0.15);
  border: 1px solid rgba(212,146,42,0.35);
  color: var(--gold-light);
  font-size: .72rem; font-weight: 700; letter-spacing: .08em;
  padding: .4rem 1.1rem; border-radius: var(--r-pill);
  backdrop-filter: blur(4px);
}

/* ── SEARCH ──────────────────────────────────────────────────── */
.search-section {
  max-width: 580px;
  margin: 2.4rem auto 1.6rem;
  padding: 0 1.2rem;
}

.search-wrapper { position: relative; }

.search-icon-left {
  position: absolute; left: 1.2rem; top: 50%;
  transform: translateY(-50%);
  color: var(--text-3); font-size: .95rem; pointer-events: none;
}

.search-input {
  width: 100%;
  min-height: var(--touch-min);
  padding: .9rem 3rem .9rem 3.1rem;
  border: 2px solid var(--border-1);
  border-radius: var(--r-pill);
  font-family: var(--font-body);
  font-size: 1rem; font-weight: 600;
  background: var(--bg-card); color: var(--text-1);
  box-shadow: var(--shadow-sm);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background .35s;
  -webkit-appearance: none; appearance: none;
}
.search-input::placeholder { color: var(--text-3); font-weight: 400; }
.search-input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 4px var(--gold-glow), var(--shadow-sm);
}

.search-clear {
  position: absolute; right: .5rem; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  color: var(--text-3); font-size: .85rem; cursor: pointer;
  width: var(--touch-min); height: var(--touch-min);
  display: none; align-items: center; justify-content: center;
  border-radius: 50%;
  transition: color var(--transition), background var(--transition);
}
.search-clear:hover { color: var(--gold); background: var(--gold-soft); }
.search-clear.visible { display: flex; }

/* ── FILTROS ─────────────────────────────────────────────────── */
.filters-section { padding: 0 1.2rem; margin-bottom: 2rem; }

.filters-list {
  display: flex; gap: .55rem; flex-wrap: wrap;
  justify-content: center; list-style: none;
  max-width: 640px; margin: 0 auto;
}

.filter-btn {
  display: inline-flex; align-items: center; gap: .45rem;
  min-height: 44px; padding: 0 1.2rem;
  border-radius: var(--r-pill);
  border: 2px solid var(--border-1);
  font-family: var(--font-body);
  font-size: .78rem; font-weight: 800;
  cursor: pointer;
  background: var(--bg-card); color: var(--text-3);
  letter-spacing: .06em; text-transform: uppercase;
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
  box-shadow: var(--shadow-xs);
}
.filter-btn:hover,
.filter-btn[aria-pressed="true"] {
  background: var(--gold); border-color: var(--gold);
  color: #fff; box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
html.dark .filter-btn[aria-pressed="true"] {
  background: var(--gold); color: #06070E;
}
.filter-btn:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

/* ── CONTEO ──────────────────────────────────────────────────── */
.results-count {
  text-align: center;
  font-size: .74rem; font-weight: 700;
  color: var(--text-3);
  letter-spacing: .1em; text-transform: uppercase;
  margin-bottom: 1.5rem; padding: 0 1.2rem;
}

/* ══════════════════════════════════════════════════════════════
   GRID — mobile-first responsivo
══════════════════════════════════════════════════════════════ */
.songs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 1.2rem 3.5rem;
}
@media (min-width: 480px)  { .songs-grid { grid-template-columns: repeat(2, 1fr); gap: .85rem; } }
@media (min-width: 720px)  { .songs-grid { grid-template-columns: repeat(3, 1fr); gap: .9rem;  padding: 0 1.5rem 3.5rem; } }
@media (min-width: 1000px) { .songs-grid { grid-template-columns: repeat(4, 1fr); gap: 1rem;   padding: 0 2rem 4rem; } }
@media (min-width: 1280px) { .songs-grid { grid-template-columns: repeat(5, 1fr); gap: 1rem;   padding: 0 3rem 4rem; } }

/* ══════════════════════════════════════════════════════════════
   CARDS — compactas, limpias, estilo editorial moderno
   Inspiración: Pinterest / Dribbble / Linear App
   Principios: densidad info alta · padding mínimo · jerarquía clara
══════════════════════════════════════════════════════════════ */
.song-card {
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  background: var(--bg-card);
  border: 1px solid var(--border-2);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  animation: fadeUp .4s ease both;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition:
    transform    var(--transition),
    box-shadow   var(--transition),
    border-color var(--transition);
}

/* Acento dorado superior — siempre presente, se intensifica en hover */
.song-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--gold), var(--gold-bright), var(--gold));
  opacity: .38;
  transition: opacity var(--transition);
}

/* Estado hover — solo mouse */
@media (hover: hover) {
  .song-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-1);
  }
  .song-card:hover::before { opacity: 1; }
  .song-card:hover .card-arrow {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Estado active — tap móvil */
.song-card:active { transform: scale(.975); }

/* Estado focus — teclado */
.song-card:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--gold-glow);
}

/* ── CUERPO ──────────────────────────────────────────────────── */
.card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: .85rem .95rem .7rem;
}

.card-number {
  font-size: .55rem;
  font-weight: 900;
  color: var(--gold);
  letter-spacing: .16em;
  text-transform: uppercase;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-1);
  line-height: 1.28;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
@media (min-width: 860px) { .card-title { font-size: 1.05rem; } }

/* ── BADGES ──────────────────────────────────────────────────── */
.card-badges {
  display: flex;
  gap: .32rem;
  flex-wrap: wrap;
  margin-top: .25rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  padding: .2rem .6rem;
  border-radius: var(--r-pill);
  font-size: .6rem;
  font-weight: 800;
  letter-spacing: .05em;
  text-transform: uppercase;
  line-height: 1;
  border: 1px solid transparent;
  transition: filter var(--transition);
}
.badge:hover { filter: brightness(1.07); }

.badge--tono {
  background: var(--gold-soft);
  color: #7A4E0A;
  border-color: rgba(212,146,42,0.28);
}
html.dark .badge--tono {
  background: #1E1804;
  color: #F5C14A;
  border-color: rgba(245,193,74,0.2);
}

.badge--tipo[data-tipo="himno"] {
  background: var(--himno-bg);
  color: var(--himno-text);
  border-color: var(--himno-border);
}
.badge--tipo[data-tipo="lenta"] {
  background: var(--lenta-bg);
  color: var(--lenta-text);
  border-color: var(--lenta-border);
}
.badge--tipo[data-tipo="jubilo"],
.badge--tipo {
  background: var(--jubilo-bg);
  color: var(--jubilo-text);
  border-color: var(--jubilo-border);
}

/* ── FOOTER ──────────────────────────────────────────────────── */
.card-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: .42rem .95rem;
  border-top: 1px solid var(--border-2);
}

/* Flecha como círculo pequeño */
.card-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gold-soft);
  color: var(--gold);
  font-size: .65rem;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity var(--transition), transform var(--transition);
}
html.dark .card-arrow { background: #1E1804; color: #F5C14A; }

/* Móvil: siempre visible, fondo transparente */
@media (hover: none) {
  .card-arrow {
    opacity: 1;
    transform: translateX(0);
    background: transparent;
  }
}

/* ── SKELETON ────────────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--border-2) 25%, var(--gold-soft) 50%, var(--border-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 6px;
}
html.dark .skeleton {
  background: linear-gradient(90deg, #1A1E3A 25%, #252A50 50%, #1A1E3A 75%);
  background-size: 200% 100%;
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── EMPTY STATE ─────────────────────────────────────────────── */
.empty-state {
  grid-column: 1/-1; text-align: center;
  padding: 4.5rem 1.5rem; color: var(--text-3);
}
.empty-state i { font-size: 3rem; margin-bottom: 1rem; display: block; opacity: .4; }
.empty-state p { font-size: .95rem; font-weight: 600; line-height: 1.7; }

/* ── FOOTER ──────────────────────────────────────────────────── */
.site-footer {
  text-align: center; padding: 1.6rem 1rem;
  font-size: .78rem; font-weight: 600;
  color: var(--text-3);
  border-top: 1px solid var(--border-1);
  margin-top: auto;
  transition: border-color .35s;
}
.site-footer strong { color: var(--gold); }
.footer-icons {
  display: flex; justify-content: center; gap: 1.1rem;
  margin-bottom: .55rem;
  font-size: 1rem; color: var(--gold-light); opacity: .55;
}

/* ── ANIMACIONES ─────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.song-card:nth-child(1) { animation-delay: .04s; }
.song-card:nth-child(2) { animation-delay: .09s; }
.song-card:nth-child(3) { animation-delay: .14s; }
.song-card:nth-child(4) { animation-delay: .19s; }
.song-card:nth-child(5) { animation-delay: .24s; }
.song-card:nth-child(6) { animation-delay: .29s; }
.song-card:nth-child(7) { animation-delay: .34s; }
.song-card:nth-child(8) { animation-delay: .39s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ── RESPONSIVE ──────────────────────────────────────────────── */
@media (max-width: 380px) {
  .site-title  { font-size: 1.9rem; }
  .filter-btn  { font-size: .73rem; padding: 0 .9rem; }
  .card-body   { padding: 1.1rem 1rem .9rem; }
}
@media (min-width: 768px) {
  .site-header { padding: 4.5rem 2rem 6.5rem; }
  .search-section { margin-top: 3rem; }
}