/* ============================================================
   VOZ Academy — Main Stylesheet
   ============================================================ */
:root {
  --navy:    #1e3a5f;
  --navy-d:  #152d4a;
  --navy-l:  #2a4f7f;
  --gold:    #c9a84c;
  --gold-l:  #e0c070;
  --white:   #ffffff;
  --off-wh:  #f8f9fa;
  --gray-50: #f9fafb;
  --gray-100:#f3f4f6;
  --gray-200:#e5e7eb;
  --gray-400:#9ca3af;
  --gray-600:#4b5563;
  --gray-700:#374151;
  --gray-900:#111827;
  --green:   #059669;
  --red:     #dc2626;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.06);
  --shadow:    0 4px 12px rgba(0,0,0,.10),0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.12),0 4px 10px rgba(0,0,0,.08);
  --radius:  10px;
  --radius-lg:16px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--gray-700);
  background: var(--off-wh);
  min-height: 100vh;
}

/* ── Typography ─────────────────────────────────────────── */
h1,h2,h3,h4 { color: var(--gray-900); font-weight: 700; line-height: 1.25; }
h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }
p { margin-bottom: 1rem; }
a { color: var(--navy); text-decoration: none; }
a:hover { color: var(--gold); }
strong { color: var(--gray-900); }

/* ── Layout ─────────────────────────────────────────────── */
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 820px; margin: 0 auto; padding: 0 24px; }

/* ── Header ─────────────────────────────────────────────── */
.site-header {
  background: var(--navy);
  border-bottom: 3px solid var(--gold);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,.2);
}
.header-inner {
  max-width: 1140px;
  margin: 0 auto;
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.logo-badge {
  background: var(--gold);
  color: var(--navy);
  font-weight: 800;
  font-size: 11px;
  letter-spacing: 1.5px;
  padding: 3px 7px;
  border-radius: 4px;
  text-transform: uppercase;
}
.logo-text {
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: .5px;
}
.logo-text span { color: var(--gold); }
.header-nav { display: flex; align-items: center; gap: 6px; }
.header-nav a {
  color: rgba(255,255,255,.8);
  font-size: .9rem;
  padding: 6px 14px;
  border-radius: 6px;
  transition: all .2s;
  font-weight: 500;
}
.header-nav a:hover { color: #fff; background: rgba(255,255,255,.1); }
.header-nav a.btn-gold {
  background: var(--gold);
  color: var(--navy);
  font-weight: 700;
}
.header-nav a.btn-gold:hover { background: var(--gold-l); color: var(--navy); }

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-l) 60%, #1a3d6e 100%);
  color: #fff;
  padding: 72px 24px 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 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='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%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/g%3E%3C/svg%3E");
}
.hero-content { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201,168,76,.15);
  border: 1px solid rgba(201,168,76,.3);
  color: var(--gold-l);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.hero h1 { color: #fff; margin-bottom: 16px; }
.hero p { color: rgba(255,255,255,.8); font-size: 1.1rem; max-width: 580px; margin: 0 auto 32px; }
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.hero-stat { text-align: center; }
.hero-stat-num { font-size: 1.75rem; font-weight: 800; color: var(--gold); display: block; }
.hero-stat-lbl { font-size: .85rem; color: rgba(255,255,255,.65); }

/* ── Section ─────────────────────────────────────────────── */
.section { padding: 64px 24px; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header .tag {
  display: inline-block;
  background: rgba(201,168,76,.12);
  color: #9a7c2e;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 12px;
}
.section-header h2 { margin-bottom: 12px; }
.section-header p { color: var(--gray-600); max-width: 560px; margin: 0 auto; }

/* ── Course Grid ─────────────────────────────────────────── */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
  max-width: 1140px;
  margin: 0 auto;
}

.course-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); color: inherit; }

.course-card-banner {
  height: 8px;
}

.course-card-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.course-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .8px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 14px;
}
.course-card h3 { font-size: 1.2rem; margin-bottom: 10px; color: var(--gray-900); }
.course-card p { font-size: .92rem; color: var(--gray-600); flex: 1; margin-bottom: 20px; }
.course-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: .82rem;
  color: var(--gray-400);
  padding-top: 16px;
  border-top: 1px solid var(--gray-100);
}
.course-meta-item { display: flex; align-items: center; gap: 5px; }
.course-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--navy);
  color: #fff;
  font-size: .88rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 8px;
  margin-top: 16px;
  transition: background .2s;
  text-decoration: none;
  align-self: flex-start;
}
.course-cta:hover { background: var(--navy-l); color: #fff; }
.course-cta svg { transition: transform .2s; }
.course-cta:hover svg { transform: translateX(3px); }

/* ── Course Page ─────────────────────────────────────────── */
.course-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  max-width: 1140px;
  margin: 0 auto;
  padding: 40px 24px;
  align-items: start;
}

.course-sidebar {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px;
  position: sticky;
  top: 90px;
}
.course-sidebar h4 {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-400);
  margin-bottom: 14px;
}
.lesson-nav { list-style: none; }
.lesson-nav li { margin-bottom: 4px; }
.lesson-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: .9rem;
  color: var(--gray-600);
  transition: all .2s;
  text-decoration: none;
}
.lesson-nav a:hover { background: var(--gray-50); color: var(--gray-900); }
.lesson-nav a.active { background: rgba(30,58,95,.08); color: var(--navy); font-weight: 600; }
.lesson-nav a.done { color: var(--green); }
.lesson-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--gray-100);
  color: var(--gray-400);
  font-size: .75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.lesson-nav a.active .lesson-num { background: var(--navy); color: #fff; }
.lesson-nav a.done .lesson-num { background: var(--green); color: #fff; }

.progress-block { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--gray-100); }
.progress-label { display: flex; justify-content: space-between; font-size: .82rem; color: var(--gray-600); margin-bottom: 8px; }
.progress-bar { height: 6px; background: var(--gray-100); border-radius: 100px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--navy), var(--gold)); border-radius: 100px; transition: width .5s; }

.quiz-btn-sidebar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 16px;
  padding: 11px 16px;
  background: var(--gold);
  color: var(--navy);
  border: none;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s;
  text-decoration: none;
}
.quiz-btn-sidebar:hover { background: var(--gold-l); color: var(--navy); }

.course-main {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.lesson-header {
  padding: 32px 40px 24px;
  border-bottom: 1px solid var(--gray-100);
}
.lesson-tag {
  font-size: .78rem;
  font-weight: 600;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.lesson-header h1 { font-size: 1.75rem; margin-bottom: 8px; }
.lesson-header p { color: var(--gray-600); font-size: 1rem; margin: 0; }

.lesson-content {
  padding: 36px 40px;
  max-width: none;
}
.lesson-content h2 { font-size: 1.35rem; margin: 32px 0 12px; color: var(--navy); }
.lesson-content h2:first-child { margin-top: 0; }
.lesson-content h3 { font-size: 1.1rem; margin: 24px 0 8px; }
.lesson-content p { color: var(--gray-700); line-height: 1.75; }
.lesson-content ul, .lesson-content ol { padding-left: 24px; margin-bottom: 16px; }
.lesson-content li { margin-bottom: 6px; color: var(--gray-700); }

.info-box {
  background: rgba(30,58,95,.05);
  border-left: 4px solid var(--navy);
  border-radius: 0 8px 8px 0;
  padding: 16px 20px;
  margin: 20px 0;
}
.info-box.gold {
  background: rgba(201,168,76,.08);
  border-left-color: var(--gold);
}
.info-box.green {
  background: rgba(5,150,105,.06);
  border-left-color: var(--green);
}
.info-box h4 { margin-bottom: 6px; font-size: .95rem; }
.info-box p { margin: 0; font-size: .92rem; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
  margin: 20px 0;
}
.stat-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.stat-box .num { font-size: 1.5rem; font-weight: 800; color: var(--navy); display: block; }
.stat-box .lbl { font-size: .8rem; color: var(--gray-400); }

.lesson-nav-footer {
  display: flex;
  justify-content: space-between;
  padding: 24px 40px;
  border-top: 1px solid var(--gray-100);
  gap: 12px;
}
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; border-radius: 8px; font-size: .9rem; font-weight: 600; cursor: pointer; transition: all .2s; border: none; text-decoration: none; }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-l); color: #fff; }
.btn-outline { background: transparent; border: 2px solid var(--gray-200); color: var(--gray-700); }
.btn-outline:hover { border-color: var(--navy); color: var(--navy); }
.btn-gold { background: var(--gold); color: var(--navy); }
.btn-gold:hover { background: var(--gold-l); color: var(--navy); }
.btn-success { background: var(--green); color: #fff; }

/* ── Quiz ────────────────────────────────────────────────── */
.quiz-container { padding: 36px 40px; }
.quiz-header { margin-bottom: 32px; }
.quiz-header h2 { margin-bottom: 8px; }
.quiz-header p { color: var(--gray-600); }

.quiz-question {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  transition: border-color .2s;
}
.quiz-question.answered-correct { border-color: var(--green); background: rgba(5,150,105,.04); }
.quiz-question.answered-wrong   { border-color: var(--red); background: rgba(220,38,38,.04); }

.question-text { font-weight: 600; color: var(--gray-900); margin-bottom: 14px; font-size: 1rem; }
.question-num { font-size: .78rem; color: var(--gray-400); font-weight: 600; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 6px; }

.options { display: flex; flex-direction: column; gap: 8px; }
.option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  cursor: pointer;
  transition: all .2s;
  background: #fff;
  font-size: .92rem;
  color: var(--gray-700);
}
.option:hover { border-color: var(--navy); color: var(--navy); background: rgba(30,58,95,.03); }
.option.selected { border-color: var(--navy); background: rgba(30,58,95,.06); color: var(--navy); font-weight: 500; }
.option.correct  { border-color: var(--green); background: rgba(5,150,105,.08); color: var(--green); font-weight: 600; }
.option.wrong    { border-color: var(--red); background: rgba(220,38,38,.06); color: var(--red); }
.option-letter {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--gray-300);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: all .2s;
}
.option.selected .option-letter { background: var(--navy); border-color: var(--navy); color: #fff; }
.option.correct .option-letter  { background: var(--green); border-color: var(--green); color: #fff; }
.option.wrong .option-letter    { background: var(--red); border-color: var(--red); color: #fff; }

.quiz-actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }

/* Quiz result */
.quiz-result {
  text-align: center;
  padding: 48px 32px;
}
.score-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  border: 4px solid;
}
.score-circle.pass { border-color: var(--green); background: rgba(5,150,105,.08); }
.score-circle.fail { border-color: var(--red);   background: rgba(220,38,38,.08);  }
.score-circle .score-num { font-size: 2rem; font-weight: 800; line-height: 1; }
.score-circle.pass .score-num { color: var(--green); }
.score-circle.fail .score-num { color: var(--red); }
.score-circle .score-sub { font-size: .75rem; color: var(--gray-400); }
.quiz-result h2 { margin-bottom: 8px; }
.quiz-result p  { color: var(--gray-600); max-width: 440px; margin: 0 auto 28px; }
.cert-form { display: flex; gap: 12px; max-width: 400px; margin: 0 auto; flex-wrap: wrap; }
.cert-form input {
  flex: 1;
  padding: 11px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  font-size: .92rem;
  outline: none;
  transition: border-color .2s;
}
.cert-form input:focus { border-color: var(--navy); }

/* ── Certificate ─────────────────────────────────────────── */
.cert-page { background: #fff; min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 40px 24px; }

/* ── Footer ─────────────────────────────────────────────── */
.site-footer {
  background: var(--navy-d);
  color: rgba(255,255,255,.6);
  padding: 32px 24px;
  text-align: center;
  font-size: .85rem;
  margin-top: 80px;
}
.site-footer a { color: var(--gold); }
.site-footer strong { color: #fff; }

/* ── Trust bar ───────────────────────────────────────────── */
.trust-bar {
  background: var(--navy);
  color: rgba(255,255,255,.8);
  padding: 14px 24px;
  font-size: .82rem;
}
.trust-bar-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.trust-item { display: flex; align-items: center; gap: 7px; }
.trust-item svg { color: var(--gold); }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 768px) {
  .course-layout { grid-template-columns: 1fr; }
  .course-sidebar { position: static; }
  .lesson-header, .lesson-content, .quiz-container, .lesson-nav-footer { padding: 24px 20px; }
  .hero { padding: 48px 20px 40px; }
  .hero-stats { gap: 24px; }
  .courses-grid { grid-template-columns: 1fr; gap: 20px; }
  .header-nav .hide-mobile { display: none; }
  .cert-form { flex-direction: column; }
}

/* ── Utilities ───────────────────────────────────────────── */
.text-center { text-align: center; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.flex-center { display: flex; align-items: center; justify-content: center; gap: 12px; }
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px; border-radius: 100px; font-size: .75rem; font-weight: 600; }
.badge-free { background: rgba(5,150,105,.1); color: var(--green); }
.badge-new  { background: rgba(201,168,76,.15); color: #9a7c2e; }

/* Color themes per course */
.theme-1 .course-card-banner { background: linear-gradient(90deg, #1e3a5f, #c9a84c); }
.theme-2 .course-card-banner { background: linear-gradient(90deg, #059669, #0891b2); }
.theme-3 .course-card-banner { background: linear-gradient(90deg, #7c3aed, #4f46e5); }
.theme-4 .course-card-banner { background: linear-gradient(90deg, #dc2626, #f59e0b); }
.theme-5 .course-card-banner { background: linear-gradient(90deg, #0891b2, #06b6d4); }
.theme-6 .course-card-banner { background: linear-gradient(90deg, #4f46e5, #7c3aed); }

.tag-1 { background: rgba(30,58,95,.08); color: var(--navy); }
.tag-2 { background: rgba(5,150,105,.1);  color: #047857; }
.tag-3 { background: rgba(124,58,237,.1); color: #6d28d9; }
.tag-4 { background: rgba(220,38,38,.08); color: #b91c1c; }
.tag-5 { background: rgba(8,145,178,.08); color: #0e7490; }
.tag-6 { background: rgba(79,70,229,.08); color: #4338ca; }