/* ============================================================
   BlueOceanHub LMS — Public Stylesheet
   Brand: BlueOceanHub | https://blueoceanhub.info
   ============================================================ */

:root {
  --boh-primary:    #005f8e;
  --boh-secondary:  #00aacc;
  --boh-accent:     #ff6b35;
  --boh-dark:       #1a2b3c;
  --boh-light:      #f0f8ff;
  --boh-white:      #ffffff;
  --boh-gray:       #6b7c8d;
  --boh-border:     #dce8f0;
  --boh-success:    #28a745;
  --boh-danger:     #dc3545;
  --boh-radius:     10px;
  --boh-shadow:     0 4px 20px rgba(0,95,142,0.12);
  --boh-transition: all 0.25s ease;
}

/* ── Reset / Base ─────────────────────────────────────────── */
.boh-course-catalog *, .boh-dashboard *, .boh-checkout-box *,
.boh-quiz *, .boh-cert-verify *, .boh-lesson-player * {
  box-sizing: border-box;
}

/* ── Grid ────────────────────────────────────────────────── */
.boh-grid { display: grid; gap: 24px; }
.boh-cols-1 { grid-template-columns: 1fr; }
.boh-cols-2 { grid-template-columns: repeat(2, 1fr); }
.boh-cols-3 { grid-template-columns: repeat(3, 1fr); }
.boh-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .boh-cols-3, .boh-cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .boh-grid { grid-template-columns: 1fr; gap: 16px; }
}

/* ── Buttons ─────────────────────────────────────────────── */
.boh-btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: var(--boh-radius);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  border: 2px solid transparent;
  transition: var(--boh-transition);
  text-align: center;
  line-height: 1.4;
}
.boh-btn-primary {
  background: var(--boh-primary);
  color: var(--boh-white);
  border-color: var(--boh-primary);
}
.boh-btn-primary:hover {
  background: var(--boh-secondary);
  border-color: var(--boh-secondary);
  color: var(--boh-white);
}
.boh-btn-secondary {
  background: var(--boh-secondary);
  color: var(--boh-white);
  border-color: var(--boh-secondary);
}
.boh-btn-secondary:hover {
  background: var(--boh-primary);
  border-color: var(--boh-primary);
  color: var(--boh-white);
}
.boh-btn-success {
  background: var(--boh-success);
  color: var(--boh-white);
  border-color: var(--boh-success);
}
.boh-btn-sm {
  padding: 6px 14px;
  font-size: 12px;
}
.boh-btn:hover { opacity: 0.92; transform: translateY(-1px); }

/* ── Course Card ─────────────────────────────────────────── */
.boh-course-card {
  background: var(--boh-white);
  border-radius: var(--boh-radius);
  box-shadow: var(--boh-shadow);
  overflow: hidden;
  transition: var(--boh-transition);
  display: flex;
  flex-direction: column;
}
.boh-course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,95,142,0.18);
}
.boh-course-thumb {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16/9;
}
.boh-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--boh-transition);
}
.boh-course-card:hover .boh-thumb-img { transform: scale(1.04); }
.boh-thumb-placeholder {
  background: linear-gradient(135deg, var(--boh-primary), var(--boh-secondary));
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
}
.boh-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.boh-badge-free     { background: var(--boh-success); color: #fff; }
.boh-badge-enrolled { background: var(--boh-secondary); color: #fff; left: 10px; right: auto; }

.boh-course-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.boh-level {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--boh-secondary);
  letter-spacing: 0.8px;
  margin-bottom: 6px;
  display: block;
}
.boh-course-title {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.35;
}
.boh-course-title a {
  color: var(--boh-dark);
  text-decoration: none;
}
.boh-course-title a:hover { color: var(--boh-primary); }
.boh-course-excerpt {
  font-size: 13px;
  color: var(--boh-gray);
  margin: 0 0 12px;
  flex: 1;
  line-height: 1.55;
}
.boh-course-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--boh-border);
}
.boh-price { font-size: 15px; }
.boh-price-free { color: var(--boh-success); font-size: 16px; }
.boh-price-sale { color: var(--boh-accent); font-size: 16px; }
.boh-price del { color: var(--boh-gray); font-size: 13px; }

/* ── Notice ──────────────────────────────────────────────── */
.boh-notice {
  background: var(--boh-light);
  border-left: 4px solid var(--boh-secondary);
  padding: 14px 18px;
  border-radius: 0 var(--boh-radius) var(--boh-radius) 0;
  font-size: 14px;
}

/* ── Dashboard ───────────────────────────────────────────── */
.boh-dashboard { max-width: 980px; }
.boh-dashboard-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 28px;
  padding: 24px;
  background: linear-gradient(135deg, var(--boh-primary), var(--boh-secondary));
  border-radius: var(--boh-radius);
  color: #fff;
}
.boh-dashboard-header h2 { margin: 0 0 4px; color: #fff; font-size: 22px; }
.boh-dashboard-meta { margin: 0; opacity: 0.85; font-size: 13px; }
.boh-avatar img { border-radius: 50%; border: 3px solid rgba(255,255,255,0.4); }

.boh-tab-nav {
  display: flex;
  gap: 6px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--boh-border);
  padding-bottom: 0;
}
.boh-tab-btn {
  padding: 10px 20px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--boh-gray);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: var(--boh-transition);
}
.boh-tab-btn.boh-active, .boh-tab-btn:hover {
  color: var(--boh-primary);
  border-bottom-color: var(--boh-primary);
}
.boh-tab-content { display: none; }
.boh-tab-content.boh-active { display: block; }

.boh-enrolled-list { display: flex; flex-direction: column; gap: 16px; }
.boh-enrolled-card {
  display: flex;
  gap: 16px;
  background: var(--boh-white);
  border: 1px solid var(--boh-border);
  border-radius: var(--boh-radius);
  padding: 16px;
  align-items: center;
}
.boh-enrolled-thumb {
  width: 90px;
  height: 60px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
}
.boh-enrolled-body { flex: 1; }
.boh-enrolled-body h4 { margin: 0 0 6px; font-size: 15px; }
.boh-enrolled-body h4 a { color: var(--boh-dark); text-decoration: none; }
.boh-enrolled-body h4 a:hover { color: var(--boh-primary); }
.boh-enrolled-body p { margin: 4px 0; font-size: 12px; color: var(--boh-gray); }

/* ── Progress Bar ────────────────────────────────────────── */
.boh-progress-bar {
  background: var(--boh-border);
  border-radius: 20px;
  height: 8px;
  overflow: hidden;
  margin: 6px 0;
}
.boh-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--boh-primary), var(--boh-secondary));
  border-radius: 20px;
  transition: width 0.6s ease;
}

/* ── Certificate Cards ───────────────────────────────────── */
.boh-cert-list { display: flex; flex-direction: column; gap: 12px; }
.boh-cert-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(135deg, #fff9e6, #fff);
  border: 1px solid #f0d060;
  border-radius: var(--boh-radius);
  padding: 14px 18px;
}
.boh-cert-icon { font-size: 28px; }
.boh-cert-info { flex: 1; font-size: 14px; line-height: 1.5; }
.boh-cert-info strong { font-size: 15px; }
.boh-cert-info small { color: var(--boh-gray); }

/* ── Checkout ────────────────────────────────────────────── */
.boh-checkout-box {
  max-width: 480px;
  margin: 0 auto;
  background: var(--boh-white);
  border-radius: var(--boh-radius);
  box-shadow: var(--boh-shadow);
  padding: 36px;
  text-align: center;
}
.boh-checkout-box h2 { margin: 0 0 20px; color: var(--boh-dark); }
.boh-checkout-summary {
  background: var(--boh-light);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
}
.boh-checkout-price { font-weight: 700; font-size: 20px; color: var(--boh-primary); }
.boh-secure-note { font-size: 12px; color: var(--boh-gray); margin-top: 12px; }
.boh-secure-note a { color: var(--boh-secondary); }

/* ── Thank You ───────────────────────────────────────────── */
.boh-thankyou {
  text-align: center;
  padding: 60px 20px;
}
.boh-thankyou-icon { font-size: 64px; margin-bottom: 16px; }
.boh-thankyou h2 { font-size: 28px; color: var(--boh-dark); margin-bottom: 12px; }

/* ── Quiz ────────────────────────────────────────────────── */
.boh-quiz { max-width: 760px; margin: 0 auto; }
.boh-quiz-best {
  background: var(--boh-light);
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 14px;
  margin-bottom: 16px;
}
.boh-quiz-timer {
  background: var(--boh-dark);
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 15px;
  font-weight: 600;
}
.boh-quiz-question {
  background: var(--boh-white);
  border: 1px solid var(--boh-border);
  border-radius: var(--boh-radius);
  padding: 20px;
  margin-bottom: 16px;
}
.boh-quiz-question h4 { margin: 0 0 14px; font-size: 16px; color: var(--boh-dark); }
.boh-quiz-choice {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid var(--boh-border);
  margin-bottom: 8px;
  cursor: pointer;
  transition: var(--boh-transition);
  font-size: 14px;
}
.boh-quiz-choice:hover { background: var(--boh-light); border-color: var(--boh-secondary); }
.boh-quiz-choice.boh-correct { background: #d4edda; border-color: var(--boh-success); }
.boh-quiz-choice.boh-wrong   { background: #f8d7da; border-color: var(--boh-danger); }
.boh-quiz-results {
  background: var(--boh-light);
  border-radius: var(--boh-radius);
  padding: 28px;
  text-align: center;
  margin-top: 20px;
}
.boh-score-circle {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  margin: 0 auto 16px;
  color: #fff;
}
.boh-score-pass { background: var(--boh-success); }
.boh-score-fail { background: var(--boh-danger); }

/* ── Video / PDF Player ──────────────────────────────────── */
.boh-video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  background: #000;
  border-radius: var(--boh-radius);
  margin-bottom: 24px;
}
.boh-iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
}
.boh-video {
  width: 100%;
  border-radius: var(--boh-radius);
  background: #000;
}
.boh-pdf-frame {
  width: 100%;
  height: 650px;
  border: 1px solid var(--boh-border);
  border-radius: var(--boh-radius);
}

/* ── Lesson Complete ─────────────────────────────────────── */
.boh-lesson-complete {
  margin-top: 30px;
  padding: 20px;
  background: var(--boh-light);
  border-radius: var(--boh-radius);
  text-align: center;
}
.boh-mark-complete.boh-completed {
  background: var(--boh-success);
  cursor: default;
  opacity: 0.8;
}

/* ── Certificate Verify ──────────────────────────────────── */
.boh-cert-verify { max-width: 560px; }
.boh-cert-verify h3 { margin-bottom: 14px; color: var(--boh-dark); }
.boh-cert-verify-form { display: flex; gap: 10px; flex-wrap: wrap; }
.boh-cert-valid {
  background: #d4edda;
  border: 1px solid var(--boh-success);
  border-radius: var(--boh-radius);
  padding: 18px;
  font-size: 14px;
  line-height: 1.7;
}
.boh-cert-invalid {
  background: #f8d7da;
  border: 1px solid var(--boh-danger);
  border-radius: var(--boh-radius);
  padding: 14px 18px;
  font-size: 14px;
}

/* ── Loading spinner ─────────────────────────────────────── */
.boh-spinner {
  display: inline-block;
  width: 20px; height: 20px;
  border: 3px solid var(--boh-border);
  border-top-color: var(--boh-primary);
  border-radius: 50%;
  animation: boh-spin 0.7s linear infinite;
  vertical-align: middle;
  margin-left: 8px;
}
@keyframes boh-spin { to { transform: rotate(360deg); } }

/* ── No courses ──────────────────────────────────────────── */
.boh-no-courses {
  text-align: center;
  color: var(--boh-gray);
  padding: 40px;
  font-size: 16px;
}