/* ═══════════════════════════════════════════════════════════════
   Cyber Classroom RU — Design v2 (แอปสมัยใหม่)
   ชั้น override ที่โหลดต่อจาก custom.css (ไม่แก้ custom.css เดิม)
   ถอนกลับได้ทันทีโดยลบบรรทัด <link>/<script> ของ design-v2 ใน
   base.html และ base_room.html

   ทิศทาง: น้ำเงิน-ทอง RU, การ์ดมุมโค้งนุ่ม เงาบาง, ปุ่มทรงแคปซูล,
   หัวข้อใหญ่ (Prompt), รหัสห้อง/วิชา/เวลาเป็น IBM Plex Mono,
   เปลี่ยนหน้าด้วย View Transitions + hover ที่ลื่น
═══════════════════════════════════════════════════════════════ */

:root {
  --font-display: 'Prompt', 'Noto Sans Thai', system-ui, sans-serif;
  --font-body:    'IBM Plex Sans Thai', 'Noto Sans Thai', 'Sarabun', system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --ink-navy:     #0a1330;
  --ink-navy-2:   #101c46;
  --on-navy:      #c5d0ee;
  --on-navy-mute: #9aa8d2;
  --gold-bright:  #f0b429;

  --bg-app:         #f4f6fb;
  --bg-surface:     #e9edf6;
  --bg-card:        #ffffff;
  --bg-card-hover:  #f6f8fd;
  --text-primary:   #0e1630;
  --text-secondary: #2c3656;
  --text-muted:     #56617f;
  --border:         #e3e7f2;
  --border-strong:  #d5dbec;
  --border-accent:  #c3cdea;
  --gold:           #a87400;
  --live-red:       #d6293a;
  --live-red-text:  #b3202f;
  --nav-bg:         rgba(244,246,251,0.86);
  --nav-border:     #e3e7f2;

  --radius:         24px;
  --radius-sm:      14px;
  --radius-pill:    999px;
  --shadow-card:    0 1px 2px rgba(14,22,48,0.04);
  --shadow-lg:      0 18px 36px -14px rgba(14,22,48,0.28);
  --shadow-glow:    none;
  --accent-glow:    rgba(30,60,184,0.18);
  --ease-out:       cubic-bezier(0.16, 1, 0.3, 1);
}

:root.dark-mode {
  --bg-app:         #080f1e;
  --bg-surface:     #0d1a30;
  --bg-card:        #0f1c38;
  --bg-card-hover:  #14244a;
  --text-primary:   #eef1f8;
  --text-secondary: #c5d0ee;
  --text-muted:     #93a0c8;
  --border:         rgba(255,255,255,0.10);
  --border-strong:  rgba(255,255,255,0.20);
  --border-accent:  rgba(122,152,240,0.55);
  --gold:           #f0b429;
  --live-red:       #ef4444;
  --live-red-text:  #fca5a5;
  --nav-bg:         rgba(8,15,30,0.86);
  --nav-border:     rgba(255,255,255,0.10);
  --shadow-card:    none;
  --shadow-lg:      0 18px 40px -14px rgba(0,0,0,0.65);
}

/* ── พื้นฐาน ───────────────────────────────────────────── */
body {
  font-family: var(--font-body);
  line-height: 1.7;
  /* ปิดเอฟเฟกต์ "โปร่งแล้วจางเข้า" เดิมของ custom.js — ใช้ View Transitions แทน */
  opacity: 1 !important;
  transition: background 0.32s ease, color 0.32s ease !important;
}
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--font-display);
  line-height: 1.35;
  letter-spacing: 0;
}
.font-en,
[class*="badge"],
time,
.pagination,
.count-badge { font-family: var(--font-body); }

a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 2px;
}

.btn { border-radius: var(--radius-pill); transition: background 0.18s ease, transform 0.18s ease, border-color 0.18s ease; }
.ripple-wave { display: none; }

/* ── แถบเมนู: สว่างโปร่ง (โหมดมืดเป็นกรมท่า) ──────────── */
.navbar {
  background: var(--nav-bg) !important;
  border-bottom: 1px solid var(--nav-border);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  height: auto;
  min-height: var(--topbar-h);
  view-transition-name: site-nav;
}
.navbar-scrolled { box-shadow: 0 6px 24px -12px rgba(14,22,48,0.25); }
.navbar-brand {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-primary) !important;
  letter-spacing: 0;
}
.navbar-brand strong { color: var(--gold) !important; }
.nav-link {
  color: var(--text-secondary) !important;
  font-weight: 500;
  border-radius: var(--radius-pill);
}
@media (hover:hover) {
  .nav-link:hover {
    color: var(--text-primary) !important;
    background: var(--bg-surface);
  }
}
#darkModeToggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
}
@media (hover:hover) {
  #darkModeToggle:hover {
    background: var(--bg-surface);
    color: var(--text-primary);
    border-color: var(--border-strong);
    box-shadow: none;
    transform: rotate(18deg);
  }
}

/* ── Hero: การ์ดกรมท่ามุมโค้ง ─────────────────────────── */
.jumbotron {
  background: var(--ink-navy);
  animation: none;
  background-size: auto;
  margin: 1rem clamp(0.75rem, 3vw, 2rem) 0;
  border-radius: 32px;
  padding: clamp(2rem, 6vw, 4.5rem) 0 clamp(2rem, 5vw, 3.5rem);
}
.jumbotron::before,
.jumbotron::after,
.hero-orb-3 { display: none; }
.jumbotron h1,
.jumbotron .display-4 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  text-shadow: none;
  text-wrap: balance;
}
.jumbotron .lead { color: var(--on-navy); font-size: clamp(1rem, 2.2vw, 1.15rem); }

.on-air-badge {
  background: #c4222f;
  border: 0;
  color: #fff;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.14em;
  animation: none;
}
.on-air-badge .live-dot { background: #fff; }

.hero-info-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 24px;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.hero-col-label {
  font-family: var(--font-mono);
  color: var(--on-navy-mute);
  letter-spacing: 0.14em;
}
.hero-col-divider { border-color: rgba(255,255,255,0.10); }
@media (min-width: 992px) {
  .hero-col-divider { border-left-color: rgba(255,255,255,0.10); }
}
.schedule-box,
.schedule-box.regional {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 16px;
  color: var(--on-navy);
}
.schedule-box h6 { font-family: var(--font-display); }
.schedule-box a { color: var(--gold-bright); }

.btn-hero,
.btn-custom-color-law,
.btn-custom-color-eco,
.btn-custom-color-human {
  background: transparent;
  color: #e6ebfb;
  border: 1px solid rgba(255,255,255,0.28);
  border-radius: var(--radius-pill);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
@media (hover:hover) {
  .btn-hero:hover,
  .btn-custom-color-law:hover,
  .btn-custom-color-eco:hover,
  .btn-custom-color-human:hover {
    background: rgba(255,255,255,0.14);
    color: #fff;
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-1px);
  }
}

/* ── หัวข้อส่วน ─────────────────────────────────────────── */
.stream-section-title { border-bottom-color: var(--border); }
.stream-section-title .section-icon,
.stream-section-title .section-icon.red,
.stream-section-title .section-icon.green {
  width: 48px; height: 48px;
  border-radius: 16px;
  box-shadow: none;
}
.stream-section-title .section-icon { background: #1e3cb8; }
.stream-section-title .section-icon.red { background: #c4222f; }
.stream-section-title .section-icon.green { background: #15803d; }
.stream-section-title h4,
.stream-section-title h5 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  letter-spacing: 0;
}

/* ── การ์ดห้อง ──────────────────────────────────────────── */
.channel-card,
.subject-card {
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.channel-card { padding: 10px; }
@media (hover:hover) {
  .channel-card:hover,
  .subject-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-lg);
  }
}

.channel-thumb {
  aspect-ratio: 2.1 / 1;
  border-radius: 16px;
}
.channel-thumb-bg,
.col:nth-child(n) .channel-thumb-bg { background: #1e3cb8; }
.channel-thumb-bg::before { display: none; }
.channel-thumb::after {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260' viewBox='0 0 260 260' fill='none' stroke='%23fff' stroke-opacity='.16' stroke-width='1.5'%3E%3Ccircle cx='130' cy='130' r='40'/%3E%3Ccircle cx='130' cy='130' r='75'/%3E%3Ccircle cx='130' cy='130' r='110'/%3E%3C/svg%3E") no-repeat right -70px bottom -110px / 260px 260px;
}
.channel-thumb-overlay { background: transparent; }
.channel-thumb-code {
  font-family: var(--font-mono);
  color: rgba(255,255,255,0.88);
}
.channel-thumb-live {
  background: #c4222f;
  border: 0;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  backdrop-filter: none;
  box-shadow: none;
  animation: none;
}
.channel-thumb-badge {
  background: rgba(240,180,41,0.18);
  border: 1px solid rgba(240,180,41,0.5);
  color: var(--gold-bright);
  border-radius: var(--radius-pill);
  backdrop-filter: none;
}
.channel-thumb-badge--chat {
  background: #e6ebfb;
  border-color: #e6ebfb;
  color: #17309a;
}
.channel-thumb-badge .chip-dot { background: var(--gold-bright); }
.channel-thumb-name .ch-icon { display: none; }
.channel-thumb-name h5 {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0;
  text-shadow: none;
}

.channel-body { padding: 1rem 0.6rem 0.6rem; }
.channel-meta .badge {
  border-radius: var(--radius-pill) !important;
  background: #e6ebfb !important;
  color: #17309a !important;
  border: 0 !important;
}
:root.dark-mode .channel-meta .badge {
  background: rgba(122,152,240,0.18) !important;
  color: #c7d2fe !important;
}
.sched-label { font-family: var(--font-mono); letter-spacing: 0.1em; }
.schedule-item { font-size: 0.88rem; }
.schedule-item .si-dot { color: var(--text-muted); }
.schedule-item.is-live { color: var(--live-red-text); font-weight: 600; }
.schedule-item.is-live .si-dot { color: var(--live-red); }

.on-air-dot,
.live-badge {
  background: #c4222f;
  border: 0;
  color: #fff;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  animation: none;
}
.on-air-dot .dot,
.live-badge .ld { background: #fff; }

.btn-watch {
  background: #1e3cb8;
  border-radius: var(--radius-pill);
  box-shadow: none;
  font-weight: 600;
  min-height: 48px;
}
.btn-watch i:last-child { transition: transform 0.18s ease; }
@media (hover:hover) {
  .btn-watch:hover {
    background: #17309a;
    box-shadow: none;
    transform: translateY(-1px);
  }
  .btn-watch:hover i:last-child { transform: translateX(4px); }
}

/* การ์ดวิชา (หน้าค้นหาวิชา) */
.subject-card { padding: 10px; }
.subject-thumb {
  background: #1e3cb8;
  border-radius: 16px;
}
.subject-thumb::before { display: none; }
.subject-thumb .course-code-big {
  font-family: var(--font-mono);
  color: #fff;
  letter-spacing: 0.04em;
  text-shadow: none;
}
.subject-card-body { padding: 1rem 0.6rem 0.6rem; }
.subject-card-body .course-num { font-family: var(--font-mono); letter-spacing: 0.04em; }
.subject-card .btn-watch { margin: 0 0.6rem 0.6rem; }

/* ── แถบสถิติ / ชิป ─────────────────────────────────────── */
.stats-bar { border-radius: 20px; box-shadow: var(--shadow-card); }
.stat-chip { border-radius: var(--radius-pill); font-family: var(--font-body); }
.stat-chip-blue { background: #e6ebfb; color: #17309a; border-color: transparent; }
.stat-chip-gold { background: rgba(240,180,41,0.2); color: #7a5600; border-color: transparent; }
.stat-chip-live { background: #c4222f; color: #fff; border-color: transparent; animation: none; }
:root.dark-mode .stat-chip-blue { background: rgba(122,152,240,0.18); color: #c7d2fe; }
:root.dark-mode .stat-chip-gold { background: rgba(240,180,41,0.16); color: var(--gold-bright); }

/* ── แจ้งเตือน / ฟอร์ม / ปุ่ม ────────────────────────────── */
.alert-info,
.alert-warning { border-radius: 16px !important; }
.count-badge {
  background: #1e3cb8;
  border-radius: var(--radius-pill);
  box-shadow: none;
  font-family: var(--font-mono);
  animation: none;
}

.form-control,
.input-group .form-control {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-strong) !important;
  min-height: 52px;
  padding-left: 1.25rem;
}
.input-group .form-control {
  border-radius: var(--radius-pill) 0 0 var(--radius-pill) !important;
}
.input-group .btn { border-radius: 0 var(--radius-pill) var(--radius-pill) 0 !important; min-height: 52px; }
.input-group .form-control:focus {
  border-color: #1e3cb8 !important;
  box-shadow: 0 0 0 4px var(--accent-glow) !important;
  background: var(--bg-card) !important;
}
.btn-primary {
  background: #1e3cb8 !important;
  box-shadow: none;
}
.btn-success {
  background: #15803d !important;
  box-shadow: none;
}
.btn-warning {
  background: #a87400 !important;
  color: #fff !important;
}
@media (hover:hover) {
  .btn-primary:hover { background: #17309a !important; transform: translateY(-1px); box-shadow: none; }
  .btn-success:hover { background: #116632 !important; transform: translateY(-1px); box-shadow: none; }
}

/* ── แบ่งหน้า ───────────────────────────────────────────── */
.pagination .page-link {
  background: var(--bg-card);
  border-color: var(--border-strong);
  border-radius: var(--radius-pill) !important;
  font-family: var(--font-mono);
}
.pagination .page-item.active .page-link {
  background: #1e3cb8;
  box-shadow: none;
}

/* ── ส่วนท้าย: สว่างโปร่ง (โหมดมืดเป็นกรมท่า) ───────────── */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
}
.footer h5 { color: var(--text-primary); font-family: var(--font-display); font-weight: 600; letter-spacing: 0; }
.footer p { color: var(--text-secondary) !important; }
.footer p.text-center { color: var(--text-muted) !important; }
.footer p a[style] { color: inherit !important; }
.footer a { color: #1e3cb8; }
:root.dark-mode .footer a { color: var(--gold-bright); }
@media (hover:hover) { .footer a:hover { color: var(--gold); } }
.footer hr { border-color: var(--border); }
.footer .btn-outline-light {
  border-color: var(--border-strong) !important;
  color: var(--text-primary) !important;
}
.footer .btn-line-big { color: #fff; }

/* ── ปุ่มกลับด้านบน / โมดัล ─────────────────────────────── */
#backToTop {
  background: #1e3cb8;
  border-radius: 50%;
  box-shadow: 0 10px 24px -8px rgba(14,22,48,0.5);
}
.modal-content { border-radius: var(--radius); }
.card { border-radius: var(--radius); }

/* ── อนิเมชัน: การ์ดโผล่ทีละใบ ───────────────────────────── */
.reveal {
  transform: translateY(24px) scale(0.985);
  transition: opacity 0.55s ease, transform 0.65s var(--ease-out);
}
.reveal.visible { transform: none; }

/* ── อนิเมชัน: เปลี่ยนหน้า (View Transitions ข้ามเอกสาร) ──────
   เบราว์เซอร์ที่รองรับ (Chrome/Edge 126+, Safari 18.2+) ใช้ที่นี่
   เบราว์เซอร์อื่นใช้ทางสำรองด้านล่าง (class no-xvt จาก design-v2.js) */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: vt-out 0.16s cubic-bezier(0.4, 0, 1, 1) both; }
::view-transition-new(root) { animation: vt-in 0.4s var(--ease-out) 0.04s both; }
@keyframes vt-out { to   { opacity: 0; transform: translateY(-8px); } }
@keyframes vt-in  { from { opacity: 0; transform: translateY(18px); } }

@keyframes page-in { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
html.no-xvt:not(.no-enter) main { animation: page-in 0.45s var(--ease-out) both; }
html.no-xvt.page-leaving main,
html.no-xvt.page-leaving .footer {
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

/* ── ลดการเคลื่อนไหวตามที่ผู้ใช้ตั้งค่าไว้ ──────────────── */
@media (prefers-reduced-motion: reduce) {
  @view-transition { navigation: none; }
  html.no-xvt main { animation: none; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ═══════════════════════════════════════════════════════════════
   รูปตึกเป็นพื้นหลังการ์ดห้อง (หน้าแรก)
   รูปมาจากหลังบ้าน: รูปของห้อง → รูปของสถานที่ → ไม่มี = พื้นสีน้ำเงินเดิม
   index.html ใส่ class "has-photo" และตัวแปร --thumb-img ให้เฉพาะการ์ดที่มีรูป
   ชั้นกรมท่าโปร่งแสงทับรูปให้ชื่อห้อง/ป้ายอ่านชัด
═══════════════════════════════════════════════════════════════ */
:root .channel-thumb.has-photo .channel-thumb-bg {
  background-color: #1e3cb8;
  background-image: linear-gradient(180deg, rgba(10,19,48,.44), rgba(10,19,48,.70)), var(--thumb-img);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
/* ลวดลายวงกลมไม่จำเป็นเมื่อมีรูป และชื่อห้องต้องอ่านชัดบนภาพ */
.channel-thumb.has-photo::after { display: none; }
.channel-thumb.has-photo .channel-thumb-name h5 { text-shadow: 0 2px 12px rgba(10,19,48,.65); }