/* ═══════════════════════════════════════════════════════════
   Escuela Sabática – III Trimestre 2026 · EL MILENIO
   Shared stylesheet
   ═══════════════════════════════════════════════════════════ */

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

/* ─── Design tokens ────────────────────────────────── */
:root {
  --gold:        #c9a84c;
  --gold-light:  #e8c97a;
  --gold-dark:   #a07830;
  --bg:          #ffffff;
  --bg2:         #f7f5f0;
  --bg3:         #ede9e0;
  --text:        #1a1a1a;
  --text2:       #4a4540;
  --text3:       #7a7068;
  --border:      #d8d0c0;
  --card-bg:     #ffffff;
  --nav-bg:      #1a1208;
  --nav-text:    #f5edda;
  --hero-grad:   linear-gradient(135deg,#1a1208 0%,#2d2010 50%,#1a1208 100%);
  --shadow:      0 2px 16px rgba(0,0,0,.08);
  --shadow-lg:   0 8px 40px rgba(0,0,0,.18);
  --radius:      10px;
  --tr:          .22s ease;
}

html.dark {
  --bg:       #111009;
  --bg2:      #1a1810;
  --bg3:      #252218;
  --text:     #f0ead8;
  --text2:    #c8c0a8;
  --text3:    #8a8070;
  --border:   #3a3528;
  --card-bg:  #1e1c12;
  --shadow:   0 2px 16px rgba(0,0,0,.45);
  --shadow-lg:0 8px 40px rgba(0,0,0,.65);
}

/* ─── Base ──────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
  font-family: 'Georgia', 'Times New Roman', serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  min-height: 100vh;
  transition: background var(--tr), color var(--tr);
}

a { color: var(--gold); text-decoration: none; transition: color var(--tr); }
a:hover { color: var(--gold-light); }
::selection { background: var(--gold); color: #fff; }

/* ─── Skip link ─────────────────────────────────────── */
.skip-link {
  position: absolute; top: -999px; left: 8px; z-index: 9999;
  background: var(--gold); color: #fff; padding: 6px 12px;
  border-radius: 4px; font-size: .85rem;
}
.skip-link:focus { top: 8px; }

/* ═══ NAVIGATION ════════════════════════════════════════ */
.nav {
  position: sticky; top: 0; z-index: 200;
  background: var(--nav-bg);
  border-bottom: 2px solid var(--gold-dark);
  box-shadow: 0 2px 14px rgba(0,0,0,.55);
}
.nav-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.5rem; height: 58px;
}
.nav-brand {
  font-size: 1.05rem; font-weight: bold;
  color: var(--gold); letter-spacing: .02em;
  display: flex; align-items: center; gap: .5rem;
}
.nav-links { display: flex; align-items: center; gap: 1.4rem; flex-wrap: wrap; }
.nav-links a {
  color: var(--nav-text); font-size: .88rem;
  font-family: Arial, sans-serif; letter-spacing: .03em;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--gold); }

.dark-toggle {
  background: none; border: 1.5px solid var(--gold-dark);
  color: var(--gold); border-radius: 50px;
  padding: 3px 11px; cursor: pointer;
  font-size: .95rem; transition: all var(--tr);
  font-family: inherit; line-height: 1.6;
}
.dark-toggle:hover { background: var(--gold); color: #000; }

/* ═══ HERO ═══════════════════════════════════════════════ */
.hero {
  background: var(--hero-grad);
  color: #f5edda;
  text-align: center;
  padding: 5rem 1.5rem 4rem;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23c9a84c' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
}
.hero-eyebrow {
  font-family: Arial, sans-serif;
  font-size: .76rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 1rem; display: block;
  position: relative;
}
.hero h1 {
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: bold; line-height: 1.15;
  margin-bottom: .5rem;
  text-shadow: 0 2px 20px rgba(0,0,0,.5);
  position: relative;
}
.hero-subtitle {
  font-size: .98rem; color: #c8bfa8;
  font-family: Arial, sans-serif; margin-top: .75rem;
  display: block; position: relative;
}
.hero-meta {
  margin-top: 1.6rem;
  display: flex; justify-content: center; gap: 1.8rem; flex-wrap: wrap;
  position: relative;
}
.hero-meta span {
  font-size: .8rem; color: #9a9080;
  font-family: Arial, sans-serif; letter-spacing: .05em;
}
.hero-divider {
  width: 60px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 2rem auto 0; position: relative;
}

/* ═══ MAIN ════════════════════════════════════════════════ */
.main { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem 5rem; }

/* ─── Section header ────────────────────────────────── */
.section-header { text-align: center; padding: 3.5rem 0 2rem; }
.section-header h2 { font-size: 1.8rem; color: var(--text); margin-bottom: .5rem; }
.section-header p  { color: var(--text3); font-family: Arial, sans-serif; font-size: .9rem; }
.section-rule { width: 50px; height: 2px; background: var(--gold); margin: 1rem auto 0; }

/* ─── Intro card ────────────────────────────────────── */
.intro-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius);
  padding: 2rem 2.5rem;
  box-shadow: var(--shadow);
  margin-bottom: 3rem;
}
.intro-card p { color: var(--text2); margin-bottom: 1rem; font-size: 1rem; }
.intro-card p:last-child { margin-bottom: 0; }

/* ─── Lessons grid ──────────────────────────────────── */
.lessons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.lesson-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform var(--tr), box-shadow var(--tr), border-color var(--tr);
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; gap: .4rem;
}
.lesson-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold-dark), var(--gold));
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--tr);
}
.lesson-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--gold-dark); }
.lesson-card:hover::before { transform: scaleX(1); }

.lesson-num {
  font-family: Arial, sans-serif;
  font-size: .68rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--gold); display: block;
}
.lesson-title { font-size: 1.1rem; font-weight: bold; color: var(--text); line-height: 1.3; }
.lesson-date  { font-family: Arial, sans-serif; font-size: .8rem; color: var(--text3); margin-bottom: .5rem; }

.lesson-btn {
  display: inline-flex; align-items: center; gap: .4rem;
  background: var(--gold); color: #1a1208;
  font-family: Arial, sans-serif; font-size: .8rem;
  font-weight: bold; letter-spacing: .04em;
  padding: .42rem 1rem; border-radius: 50px;
  border: none; cursor: pointer;
  transition: background var(--tr);
  text-decoration: none; width: fit-content; margin-top: auto;
}
.lesson-btn:hover { background: var(--gold-light); color: #1a1208; }

/* ═══ LESSON PAGE ═════════════════════════════════════════ */
.back-btn {
  display: inline-flex; align-items: center; gap: .5rem;
  color: var(--gold); font-family: Arial, sans-serif;
  font-size: .88rem; margin: 2rem 0 1.5rem;
  background: none; border: none; cursor: pointer;
  text-decoration: none;
  transition: color var(--tr);
}
.back-btn:hover { color: var(--gold-light); }

/* ─── Lesson header ─────────────────────────────────── */
.lesson-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}
.lesson-eyebrow {
  font-family: Arial, sans-serif; font-size: .72rem;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--gold); display: block; margin-bottom: .6rem;
}
.lesson-page-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--text); line-height: 1.2; margin-bottom: 1rem;
}
.lesson-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem; margin-top: 1.2rem;
}
.meta-item {
  background: var(--bg2); border-radius: var(--radius);
  padding: .8rem 1rem; border: 1px solid var(--border);
}
.meta-label {
  font-family: Arial, sans-serif; font-size: .68rem;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--gold); display: block; margin-bottom: .3rem;
}
.meta-value { font-size: .9rem; color: var(--text2); }

/* ─── Verse block ───────────────────────────────────── */
.verse-block {
  background: var(--bg2);
  border-left: 4px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.2rem 1.5rem;
  margin: 1.5rem 0 1.8rem;
  font-style: italic; color: var(--text2);
  font-size: 1.02rem;
}
.verse-block strong { color: var(--text); font-style: normal; }

/* ─── Objective box ─────────────────────────────────── */
.objective-box {
  background: var(--bg3); border-radius: var(--radius);
  padding: 1rem 1.5rem; margin-bottom: 2rem;
  border: 1px solid var(--border);
}
.obj-label {
  font-family: Arial, sans-serif; font-size: .68rem;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--gold); display: block; margin-bottom: .35rem;
}
.objective-box p { font-size: .95rem; color: var(--text2); }

/* ─── Commentary ────────────────────────────────────── */
.commentary h2 {
  font-size: 1.2rem; color: var(--gold);
  margin: 2rem 0 .8rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--border);
}
.commentary p {
  color: var(--text2); margin-bottom: 1.1rem;
  font-size: 1rem; text-align: justify;
}

/* ─── Verse citation links inside commentary ────────── */
/* Inline Bible references clickable */
.verse-cite {
  color: var(--gold);
  cursor: pointer;
  border-bottom: 1px dashed var(--gold-dark);
  font-style: italic;
  font-size: .93em;
  transition: color var(--tr), border-color var(--tr);
  white-space: nowrap;
}
.verse-cite:hover { color: var(--gold-light); border-color: var(--gold-light); }

/* ─── POPUP (verse tooltip/modal) ───────────────────── */
.verse-popup-overlay {
  display: none;
  position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(3px);
  justify-content: center; align-items: center;
  padding: 1rem;
}
.verse-popup-overlay.active { display: flex; }

.verse-popup {
  background: var(--card-bg);
  border: 1px solid var(--gold-dark);
  border-top: 4px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.8rem 2rem;
  max-width: 560px; width: 100%;
  box-shadow: var(--shadow-lg);
  position: relative;
  animation: popupIn .18s ease;
}
@keyframes popupIn {
  from { opacity: 0; transform: scale(.94) translateY(-8px); }
  to   { opacity: 1; transform: scale(1)  translateY(0); }
}
.verse-popup-ref {
  font-family: Arial, sans-serif; font-size: .72rem;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--gold); display: block; margin-bottom: .6rem;
}
.verse-popup-text {
  font-size: 1.05rem; color: var(--text);
  line-height: 1.75; font-style: italic;
}
.verse-popup-close {
  position: absolute; top: .8rem; right: .9rem;
  background: none; border: none; cursor: pointer;
  color: var(--text3); font-size: 1.3rem; line-height: 1;
  transition: color var(--tr);
}
.verse-popup-close:hover { color: var(--gold); }

/* ─── Dropdown sections ─────────────────────────────── */
.dropdown-section {
  border: 1px solid var(--border); border-radius: var(--radius);
  margin: 1.5rem 0; overflow: hidden;
  box-shadow: var(--shadow);
}
.dropdown-trigger {
  width: 100%; background: var(--bg2);
  border: none; cursor: pointer; text-align: left;
  padding: 1rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
  color: var(--text); font-family: inherit; font-size: .98rem;
  font-weight: bold; transition: background var(--tr);
}
.dropdown-trigger:hover { background: var(--bg3); }
.dropdown-trigger .dd-icon {
  color: var(--gold); font-size: 1.1rem;
  transition: transform var(--tr); display: inline-block;
}
.dropdown-trigger[aria-expanded="true"] .dd-icon { transform: rotate(180deg); }

.dropdown-body {
  max-height: 0; overflow: hidden;
  transition: max-height .3s ease, padding .3s ease;
  background: var(--card-bg);
  border-top: 0 solid var(--border);
  padding: 0 1.5rem;
}
.dropdown-body.open {
  max-height: 900px;
  padding: 1.2rem 1.5rem;
  border-top: 1px solid var(--border);
}

.dropdown-body ol { padding-left: 1.4rem; }
.dropdown-body ol li { color: var(--text2); margin-bottom: .8rem; font-size: .95rem; }
.dropdown-body .refs { font-family: Arial, sans-serif; font-size: .88rem; color: var(--text3); }

/* ─── Conclusion ────────────────────────────────────── */
.conclusion-box {
  background: linear-gradient(135deg, var(--bg2), var(--bg3));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  margin: 2rem 0;
}
.conc-label {
  font-family: Arial, sans-serif; font-size: .68rem;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--gold); display: block; margin-bottom: .6rem;
}
.conclusion-box p { color: var(--text2); font-size: .98rem; font-style: italic; }

/* ─── Lesson nav (prev/next) ────────────────────────── */
.lesson-nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 2rem 0 1rem;
  border-top: 1px solid var(--border);
  margin-top: 2.5rem;
  flex-wrap: wrap; gap: .8rem;
}
.lesson-nav-btn {
  display: inline-flex; align-items: center; gap: .4rem;
  background: none; border: 1.5px solid var(--gold-dark);
  color: var(--gold); padding: .5rem 1.2rem;
  border-radius: 50px; cursor: pointer;
  font-family: Arial, sans-serif; font-size: .85rem;
  transition: all var(--tr); text-decoration: none;
}
.lesson-nav-btn:hover { background: var(--gold); color: #1a1208; }
.lesson-nav-btn.disabled {
  opacity: .3; pointer-events: none; cursor: not-allowed;
}
.lesson-counter {
  font-family: Arial, sans-serif; font-size: .82rem;
  color: var(--text3); white-space: nowrap;
}

/* ═══ FOOTER ══════════════════════════════════════════════ */
footer {
  background: var(--nav-bg);
  border-top: 2px solid var(--gold-dark);
  text-align: center; padding: 2rem 1.5rem;
  font-family: Arial, sans-serif; font-size: .8rem;
  color: #6a6050;
}
footer a { color: var(--gold-dark); }
footer a:hover { color: var(--gold); }

/* ═══ RESPONSIVE ══════════════════════════════════════════ */
@media (max-width: 700px) {
  .nav-inner { padding: 0 .9rem; }
  .nav-links  { gap: .7rem; }
  .nav-links a { font-size: .8rem; }
  .hero { padding: 3rem 1rem 2.5rem; }
  .main { padding: 0 1rem 3rem; }
  .intro-card { padding: 1.4rem; }
  .lesson-meta-grid { grid-template-columns: 1fr; }
  .verse-popup { padding: 1.4rem; }
  .lesson-nav { flex-direction: column; align-items: stretch; }
  .lesson-nav-btn { text-align: center; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}