/* หน้าอบรมออนไลน์ /courses (ใช้ตัวแปรสี/ฟอนต์ร่วมกับ styles.css) */

.course-hero { padding: 56px 0 32px; max-width: 74ch; }
.course-hero h1 { font-size: clamp(26px, 4vw, 38px); font-weight: 700; line-height: 1.2; margin-top: 14px; }
.course-hero .sub { margin-top: 16px; font-size: 16px; color: var(--ink-muted); max-width: 62ch; }
.course-hero .eyebrow a { color: inherit; text-decoration: none; }

.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; padding: 8px 0 40px; }
.course-card { background: var(--paper-raised); border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: 8px; padding: 22px; display: flex; flex-direction: column; gap: 10px; }
.course-card h2 { font-size: 20px; line-height: 1.3; margin: 0; }
.course-card h2 a { color: inherit; text-decoration: none; }
.course-card h2 a:hover { color: var(--structure); }
.course-card p { margin: 0; }
.course-card .btn { margin-top: auto; align-self: flex-start; }
.course-meta { color: var(--ink-muted); font-size: 14px; }

.course-badge { align-self: flex-start; font-size: 13px; font-weight: 600; padding: 2px 10px; border-radius: 999px; border: 1px solid var(--line); }
.course-badge-open { color: var(--structure); border-color: var(--structure-soft); }
.course-badge-soon { color: var(--ink-muted); }

.course-facts { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 20px 0; font-size: 15px; }
.course-facts strong { color: var(--ink-muted); font-weight: 500; margin-right: 6px; }

.course-section { padding: 24px 0; max-width: 74ch; border-top: 1px solid var(--line); }
.course-section h2 { font-size: 22px; margin: 0 0 12px; }
.course-section ul, .course-section ol { margin: 0; padding-left: 22px; }
.course-section li { margin: 6px 0; }
.course-section details { border: 1px solid var(--line); border-radius: 6px; padding: 10px 14px; margin: 8px 0; background: var(--paper-raised); }
.course-section summary { cursor: pointer; font-weight: 600; }

.course-contact { padding: 32px 0 56px; }
.course-contact h2 { font-size: 22px; margin: 0 0 8px; }
.course-contact p { color: var(--ink-muted); margin: 0 0 16px; }

.course-thumb { display: block; width: 100%; height: auto; border-radius: 6px; }

.course-detail-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 440px); gap: 36px; align-items: start; padding: 56px 0 32px; }
.course-detail-text h1 { font-size: clamp(26px, 4vw, 38px); font-weight: 700; line-height: 1.2; margin-top: 14px; }
.course-detail-text .sub { margin-top: 16px; font-size: 16px; color: var(--ink-muted); }
.course-detail-text .eyebrow a { color: inherit; text-decoration: none; }
.course-poster { width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--line); }

@media (max-width: 800px) {
  .course-detail-hero { grid-template-columns: 1fr; padding-top: 32px; }
  .course-poster { order: -1; }
}

/* หัวเว็บแบบเรียบของหน้าอบรม: ไม่มีเมนูพับ จึงต้องโชว์ปุ่มบนมือถือด้วย */
@media (max-width: 800px) {
  .nav-cta-group { display: flex; }
}

/* คอร์สที่ไม่มีโปสเตอร์ */
.course-detail-hero-noimg { grid-template-columns: 1fr; max-width: 74ch; }

/* จุดขายของทุกคอร์ส */
.course-highlights { background: var(--paper-raised); border: 1px solid var(--structure-soft); border-left: 4px solid var(--structure); border-radius: 8px; padding: 18px 22px; margin: 8px 0 28px; max-width: 74ch; }
.course-highlights h2 { font-size: 16px; margin: 0 0 10px; color: var(--ink-muted); font-weight: 600; }
.course-highlights ul { list-style: none; margin: 0; padding: 0; }
.course-highlights li { font-size: 19px; font-weight: 600; margin: 6px 0; padding-left: 28px; position: relative; }
.course-highlights li::before { content: "✓"; position: absolute; left: 0; color: var(--structure); font-weight: 700; }

/* ชื่อคอร์ส "คุยไทยให้ Ai ทำ": ชื่อหลักตัวใหญ่สีเด่น + บรรทัดรองเป็นป้ายกรอบ */
.course-title { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.course-title-main { font-family: "Bai Jamjuree", sans-serif; font-weight: 700; font-size: clamp(40px, 8vw, 68px); line-height: 1.05; letter-spacing: -0.01em; }
.course-title-main em { font-style: normal; color: var(--accent); }
.course-title-sub { font-size: clamp(16px, 2.6vw, 21px); font-weight: 600; line-height: 1.35; color: var(--structure); border: 2px solid var(--structure); border-radius: 8px; padding: 8px 14px; background: var(--paper-raised); }
.course-title-card { gap: 10px; }
.course-title-card .course-title-main { font-size: 34px; }
.course-title-card .course-title-sub { font-size: 15px; padding: 6px 10px; }
.course-card .course-title a:hover .course-title-main { color: var(--structure); }

/* หน้าผลงานผู้เรียน */
.showcase-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.showcase-warning { border-left-color: var(--accent); border-color: var(--accent); }
.showcase-warning li::before { content: "!"; color: var(--accent); }

/* หัวเว็บบนมือถือจอแคบ: ย่อให้ชื่อกับปุ่มไม่ซ้อนกัน */
@media (max-width: 480px) {
  .site-nav { gap: 8px; }
  .brand { font-size: 13px; gap: 6px; min-width: 0; }
  .brand img { width: 30px; height: 30px; flex: none; }
  .nav-cta-group { gap: 6px; flex: none; }
  .nav-cta-group .nav-cta { padding: 7px 10px; font-size: 13px; white-space: nowrap; }
}

/* หน้า /course-ai: วิดีโอ 4:5 ข้างหัวเรื่อง, เปรียบเทียบแบบเดิม/แบบใหม่, สายงาน */
.course-video { display: block; width: 100%; max-width: 400px; aspect-ratio: 4 / 5; height: auto; justify-self: end; border-radius: 10px; border: 1px solid var(--line); background: #F3F4F6; }
@media (max-width: 800px) { .course-video { justify-self: center; } }
.ai-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.ai-compare-col { background: var(--paper-raised); border: 1px solid var(--line); border-radius: 8px; padding: 16px 18px; }
.ai-compare-col p { margin: 10px 0 0; }
.ai-compare-new { border-color: var(--accent); }
.ai-tag { font-size: 13px; font-weight: 600; padding: 2px 10px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-muted); }
.ai-tag-new { color: var(--accent); border-color: var(--accent); }
.ai-fields { list-style: none; padding: 0 !important; display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 10px; }
.ai-fields li { margin: 0 !important; background: var(--paper-raised); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; font-size: 14px; color: var(--ink-muted); }
.ai-fields strong { display: block; font-size: 16px; color: var(--ink); margin-bottom: 2px; }
@media (max-width: 600px) { .ai-compare { grid-template-columns: 1fr; } }