/* ===== ตัวแปรสี ===== */
:root {
  --primary: #d97706;
  --primary-dark: #b45309;
  --dark: #1f2937;
  --gray: #6b7280;
  --gray-light: #f3f4f6;
  --border: #e5e7eb;
  --success: #16a34a;
  --danger: #dc2626;
  --member: #2563eb;
  --paid: #d97706;
  --free: #16a34a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Sarabun", "Segoe UI", Tahoma, sans-serif;
  color: var(--dark);
  background: #fafafa;
  line-height: 1.6;
}

a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

h1, h2, h3 { line-height: 1.3; }

/* ===== Header ===== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  /* เลื่อนไปพร้อมหน้าเว็บตามปกติ (ไม่ fix ค้างบนจอ) เพื่อไม่ให้เสียพื้นที่จอตอนเลื่อนดู */
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 20px;
}
.logo { font-size: 1.3rem; font-weight: 700; color: var(--dark); }
.logo:hover { text-decoration: none; }
.main-nav { display: flex; gap: 18px; flex-wrap: wrap; }
.main-nav a { color: var(--gray); font-weight: 500; }
.main-nav a:hover { color: var(--primary-dark); text-decoration: none; }
.nav-user { display: flex; align-items: center; gap: 12px; }
.search-form { display: flex; align-items: center; gap: 0; }
.search-form input[type="text"] {
  padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px 0 0 8px;
  font-size: 0.9rem; width: 180px; max-width: 40vw;
}
.search-form button {
  border: 1px solid var(--border); border-left: none; background: var(--gray-light);
  border-radius: 0 8px 8px 0; padding: 8px 12px; cursor: pointer; font-size: 0.95rem;
}
.search-form button:hover { background: var(--primary); }

.main-content { min-height: 60vh; padding: 30px 20px 60px; }

/* ===== Buttons ===== */
.btn, .btn-outline {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn-outline {
  background: transparent;
  color: var(--primary-dark);
  border-color: var(--primary);
}
.btn-outline:hover { background: var(--gray-light); text-decoration: none; }
.danger { color: var(--danger); }

/* ===== Flash messages ===== */
.flash { padding: 12px 16px; border-radius: 6px; margin-bottom: 20px; }
.flash-success, .form-success { background: #dcfce7; color: #166534; padding: 12px 16px; border-radius: 6px; }
.flash-error, .form-error { background: #fee2e2; color: #991b1b; padding: 12px 16px; border-radius: 6px; }

/* ===== Hero ===== */
.hero { text-align: center; padding: 40px 0; }
.hero h1 { font-size: 2rem; margin-bottom: 10px; }
.hero p { color: var(--gray); max-width: 640px; margin: 0 auto; }
.hero-small { padding: 20px 0; text-align: left; }

/* ===== Video grid ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 20px;
}
.video-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  color: var(--dark);
  transition: box-shadow 0.15s, transform 0.15s;
}
.video-card:hover { box-shadow: 0 6px 18px rgba(0,0,0,0.08); transform: translateY(-2px); text-decoration: none; }
.thumb { position: relative; aspect-ratio: 16/9; background: var(--gray-light); }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb-placeholder {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
  color: var(--gray); font-size: 0.9rem;
}
.badge {
  display: inline-block; margin-bottom: 6px;
  font-size: 0.72rem; font-weight: 700; padding: 4px 8px; border-radius: 4px; color: #fff;
}
.badge-free { background: var(--free); }
.badge-member { background: var(--member); }
.badge-paid { background: var(--paid); }
.duration {
  position: absolute; bottom: 8px; right: 8px; background: rgba(0,0,0,0.75);
  color: #fff; font-size: 0.75rem; padding: 2px 6px; border-radius: 4px;
}
.video-card-body { padding: 12px 14px; }
.video-card-body h3 { font-size: 1rem; margin: 0 0 6px; }
.category-tag { color: var(--gray); font-size: 0.85rem; margin: 0; }
.card-meta { color: var(--gray); font-size: 0.8rem; margin: 6px 0 0; }
.price { font-weight: 700; color: var(--primary-dark); margin: 6px 0 0; }

/* ===== ระดับความยาก ===== */
.diff-badge {
  display: inline-block; font-size: 0.72rem; font-weight: 700; padding: 3px 8px;
  border-radius: 4px; margin-top: 6px;
}
.diff-basic { background: #dcfce7; color: #166534; }
.diff-intermediate { background: #fef3c7; color: #92400e; }
.diff-hard { background: #fee2e2; color: #991b1b; }

/* ===== ปุ่มถูกใจ ===== */
.like-btn {
  display: inline-flex; align-items: center; gap: 6px; margin: 12px 0;
  padding: 8px 16px; border-radius: 20px; border: 1px solid var(--border);
  background: #fff; cursor: pointer; font-weight: 600; font-size: 0.92rem; color: var(--dark);
}
.like-btn:hover { background: var(--gray-light); }
.like-btn.liked { border-color: #f87171; color: #b91c1c; }
.like-btn #like-icon { font-size: 1.1rem; }

.share-btn {
  display: inline-flex; align-items: center; gap: 6px; margin: 12px 0 12px 8px;
  padding: 8px 16px; border-radius: 20px; border: 1px solid var(--border);
  background: #fff; cursor: pointer; font-weight: 600; font-size: 0.92rem; color: var(--dark);
}
.share-btn:hover { background: var(--gray-light); }
.share-btn.copied { border-color: var(--primary); color: var(--primary-dark); }

/* ===== Video detail page ===== */
.video-page { display: grid; grid-template-columns: 2fr 1fr; gap: 30px; margin-top: 10px; }
.video-player { width: 100%; border-radius: 10px; background: #000; aspect-ratio: 16/9; }
.bunny-embed-wrap { position: relative; width: 100%; aspect-ratio: 16/9; border-radius: 10px; overflow: hidden; background: #000; }
.bunny-embed-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: none; }
.player-poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.75; }
.play-btn {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 74px; height: 74px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(217, 119, 6, 0.92); color: #fff; font-size: 1.6rem;
  display: flex; align-items: center; justify-content: center; padding-left: 6px;
}
.play-btn:hover { background: var(--primary-dark); }
.video-locked { position: relative; aspect-ratio: 16/9; border-radius: 10px; overflow: hidden; background: var(--dark); }
.video-locked img { width: 100%; height: 100%; object-fit: cover; opacity: 0.35; }
.lock-overlay {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center;
  justify-content: center; text-align: center; color: #fff; gap: 10px; padding: 20px;
}
.lock-icon { font-size: 2.4rem; margin: 0; }
.redeem-box { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-top: 16px; }
.redeem-box form { display: flex; gap: 10px; flex-wrap: wrap; }
.redeem-box input[type=text] { flex: 1; min-width: 200px; padding: 10px; border: 1px solid var(--border); border-radius: 6px; }

/* ===== ตัวอย่างวิดีโอก่อนซื้อ ===== */
.preview-gallery { margin-top: 14px; }
.preview-gallery-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.preview-gallery-grid img {
  width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: 6px; border: 1px solid var(--border);
  cursor: zoom-in; transition: opacity 0.15s;
}
.preview-gallery-grid img:hover { opacity: 0.85; }
@media (max-width: 640px) {
  .preview-gallery-grid { grid-template-columns: repeat(3, 1fr); }
}

.preview-lightbox {
  position: fixed; inset: 0; background: rgba(0,0,0,0.88);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; cursor: zoom-out; padding: 24px;
}
.preview-lightbox[hidden] { display: none; }
.preview-lightbox img { max-width: 92vw; max-height: 92vh; border-radius: 8px; }

/* ===== ปุ่ม/กล่อง จ่ายเพื่อดู VDO นี้ ===== */
.buy-btn { display: block; width: 100%; margin-top: 14px; text-align: center; }
.buy-panel {
  background: #fffbeb; border: 1px solid #fde68a; border-radius: 10px;
  padding: 18px; margin-top: 12px; text-align: center;
}
.buy-instructions { color: #374151; text-align: left; }
.buy-instructions a { color: var(--primary-dark); text-decoration: underline; }
.line-qr { max-width: 220px; width: 100%; margin: 14px auto 0; display: block; border-radius: 8px; border: 1px solid var(--border); }
.video-info-col h1 { font-size: 1.4rem; margin: 10px 0; }
.video-desc { color: #374151; }

/* ===== หน้าเกี่ยวกับเรา ===== */
.about-page { max-width: 860px; margin: 0 auto; }
.about-page h1 { margin-bottom: 16px; }
.about-cover { width: 100%; max-height: 420px; object-fit: cover; border-radius: 12px; margin-bottom: 20px; }
.about-body { color: #374151; line-height: 1.7; font-size: 1rem; margin-bottom: 24px; }
.about-body a { color: var(--primary-dark); text-decoration: underline; }
.about-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.about-gallery-item { margin: 0; }
.about-gallery-item img {
  width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 8px; border: 1px solid var(--border);
}
.about-gallery-item figcaption { text-align: center; font-size: 0.8rem; color: var(--gray); margin-top: 4px; }
@media (max-width: 640px) {
  .about-gallery { grid-template-columns: repeat(2, 1fr); }
}

/* ===== แกลเลอรีเกี่ยวกับเรา (แอดมิน) ===== */
.about-gallery-admin { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 14px; margin-top: 16px; }
.about-gallery-admin-item { text-align: center; }
.about-gallery-admin-item img {
  width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 8px; border: 1px solid var(--border);
}

/* ===== Tag วิดีโอ ===== */
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag-badge {
  background: var(--gray-light); color: var(--gray); font-size: 0.82rem; font-weight: 600;
  padding: 4px 12px; border-radius: 999px; text-decoration: none;
}
.tag-badge:hover { background: var(--primary); color: #fff; text-decoration: none; }

/* ===== วิดีโอที่เกี่ยวข้อง ===== */
.related-section { margin-top: 40px; }
.related-section h2 { font-size: 1.2rem; margin-bottom: 14px; }

/* ===== ความคิดเห็น ===== */
.comments-section { margin-top: 40px; max-width: 800px; }
.comments-section h2 { font-size: 1.2rem; margin-bottom: 14px; }
.comment-form { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.comment-form textarea {
  padding: 10px; border: 1px solid var(--border); border-radius: 8px; font-family: inherit; font-size: 0.95rem; resize: vertical;
}
.comment-form .btn { align-self: flex-start; }
.comment-list { display: flex; flex-direction: column; gap: 16px; }
.comment-item { border-bottom: 1px solid var(--border); padding-bottom: 14px; }
.comment-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 4px; }
.comment-date { color: var(--gray); font-size: 0.8rem; }
.comment-status { font-size: 0.72rem; font-weight: 700; padding: 2px 8px; border-radius: 4px; }
.comment-status.pending { background: #fef3c7; color: #92400e; }
.comment-status.rejected { background: #fee2e2; color: #991b1b; }
.comment-body { margin: 0; color: #374151; }
.comment-body a { color: var(--primary, #2563eb); text-decoration: underline; word-break: break-word; }
.comment-item-admin { background: #f5f8ff; border: 1px solid #dbe6ff; border-radius: 10px; padding: 12px 14px; }
.comment-admin-badge {
  background: #2563eb; color: #fff; font-size: 0.7rem; font-weight: 700;
  padding: 2px 8px; border-radius: 4px; letter-spacing: 0.02em;
}
.comment-image { max-width: 260px; max-height: 260px; border-radius: 8px; margin-top: 8px; display: block; }
.comment-image-field { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: #4b5563; }
.comment-image-field input[type="file"] { font-size: 0.85rem; }

/* ===== แท็บ (แอดมิน) ===== */
.admin-tabs { display: flex; gap: 6px; margin: 16px 0; border-bottom: 1px solid var(--border); }
.admin-tabs a {
  padding: 10px 16px; color: var(--gray); font-weight: 600; border-bottom: 2px solid transparent;
}
.admin-tabs a:hover { color: var(--dark); text-decoration: none; }
.admin-tabs a.active { color: var(--primary-dark); border-bottom-color: var(--primary); }

/* ===== badge จำนวนแจ้งเตือนในเมนูแอดมิน ===== */
.nav-badge {
  display: inline-block; background: #dc2626; color: #fff; font-size: 0.7rem; font-weight: 700;
  padding: 1px 7px; border-radius: 10px; margin-left: 4px;
}

/* ===== Forms ===== */
.auth-form, .admin-form {
  max-width: 480px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 26px;
  margin-top: 16px;
}
.admin-form { max-width: 640px; }
.auth-form label, .admin-form label {
  display: block; margin-bottom: 14px; font-weight: 600; font-size: 0.92rem; color: #374151;
}
.auth-form input, .admin-form input, .admin-form select, .admin-form textarea {
  display: block; width: 100%; margin-top: 6px; padding: 10px; border: 1px solid var(--border);
  border-radius: 6px; font-size: 1rem; font-family: inherit;
}
.inline-form { display: flex; gap: 16px; align-items: flex-end; flex-wrap: wrap; max-width: none; }
.inline-form label { margin-bottom: 0; }
.hint { color: var(--gray); font-size: 0.88rem; }

/* ===== Tables ===== */
.simple-table { width: 100%; border-collapse: collapse; background: #fff; margin-top: 14px; }
.simple-table th, .simple-table td {
  text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.92rem;
}
.simple-table th { background: var(--gray-light); font-weight: 700; }
.row-actions a { margin-right: 10px; }
.thumb-small { width: 64px; height: 36px; object-fit: cover; border-radius: 4px; display: inline-block; background: var(--gray-light); }
.thumb-empty { display: inline-block; }
.thumb-preview { max-width: 200px; border-radius: 6px; margin-top: 10px; }
.code-list { list-style: none; padding: 0; display: flex; gap: 10px; flex-wrap: wrap; }
.code-list code { background: #fff; border: 1px solid var(--border); padding: 4px 10px; border-radius: 4px; font-size: 1rem; }

/* ===== Account page ===== */
.account-page h2 { margin-top: 30px; }

/* ===== Footer ===== */
.site-footer { border-top: 1px solid var(--border); padding: 20px 0; color: var(--gray); font-size: 0.85rem; text-align: center; }

/* ===== Admin layout ===== */
.admin-body { background: #f4f5f7; }
.admin-shell { display: flex; min-height: 100vh; }
.admin-sidebar { width: 220px; background: var(--dark); color: #fff; flex-shrink: 0; padding: 20px 0; }
.admin-logo { font-weight: 700; font-size: 1.1rem; padding: 0 20px 20px; }
.admin-sidebar nav { display: flex; flex-direction: column; }
.admin-sidebar nav a {
  color: #d1d5db; padding: 12px 20px; font-weight: 500;
}
.admin-sidebar nav a:hover, .admin-sidebar nav a.active { background: rgba(255,255,255,0.08); color: #fff; text-decoration: none; }
.admin-sidebar nav a.logout-link { margin-top: auto; color: #f87171; }
.admin-main { flex: 1; padding: 26px 34px; }
.admin-topbar { text-align: right; color: var(--gray); margin-bottom: 14px; font-size: 0.9rem; }
.admin-page-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin: 20px 0 30px; }
.stat-card {
  background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 18px;
  display: flex; flex-direction: column; gap: 4px;
}
.stat-num { font-size: 1.8rem; font-weight: 700; color: var(--primary-dark); }
.admin-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }

/* ===== Admin/login pages ===== */
.admin-login-body {
  display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--dark);
}
.admin-login-box {
  background: #fff; border-radius: 12px; padding: 34px; width: 100%; max-width: 380px;
}
.admin-login-box h1 { font-size: 1.2rem; margin-top: 0; }
.admin-login-box label { display: block; margin-bottom: 14px; font-weight: 600; font-size: 0.9rem; }
.admin-login-box input {
  display: block; width: 100%; margin-top: 6px; padding: 10px; border: 1px solid var(--border); border-radius: 6px;
}
.admin-login-box .btn { width: 100%; text-align: center; margin-top: 6px; }

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .video-page { grid-template-columns: 1fr; }
  .admin-two-col { grid-template-columns: 1fr; }
  .admin-shell { flex-direction: column; }
  .admin-sidebar { width: 100%; }
  .admin-sidebar nav { flex-direction: row; flex-wrap: wrap; }
}

/* ===== ตัวจัดการโฆษณา (ad banners) ===== */
.ad-banner-zone {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin: 16px 0;
}
.ad-banner-top { margin-top: 0; }
.ad-banner {
  max-width: 100%;
  overflow: hidden;
  border-radius: 8px;
  line-height: 0;
}
.ad-banner img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

/* ===== ตัวอย่างวิดีโอฟรีช่วงแรก (วิดีโอจ่ายเพื่อดู) ===== */
.preview-tag {
  position: absolute; top: 10px; left: 10px; z-index: 2; pointer-events: none;
  background: rgba(217, 119, 6, 0.92); color: #fff; font-size: 0.75rem; font-weight: 700;
  padding: 4px 8px; border-radius: 4px;
}
.preview-end { background: var(--dark); }
.preview-end p { margin: 0; }