/* ==========================================================================
   NON SÔNG GẤM VÓC 3D - BẢN SẮC VIỆT NAM
   Thương hiệu: NHIEP.NET
   Bảng màu: Sơn Mài Đỏ Son - Hoàng Kim Kim Thiếp - Xanh Ngọc Bích
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=Playfair+Display:ital,wght@0,600;0,700;0,900;1,600&display=swap');

:root {
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;

  /* Bảng màu truyền thống Việt Nam */
  --c-bg: #060810;
  --c-bg-surface: #0f131f;
  --c-bg-card: rgba(18, 24, 38, 0.88);
  --c-bg-card-hover: rgba(26, 35, 56, 0.95);

  --c-gold: #d4af37;
  --c-gold-light: #f6d365;
  --c-gold-glow: rgba(212, 175, 55, 0.4);

  --c-crimson: #9e1a24;
  --c-crimson-deep: #5e0d13;

  --c-jade: #1b4332;
  --c-jade-light: #40916c;

  --c-orange-brand: #f37321;
  --c-orange-glow: rgba(243, 115, 33, 0.4);

  --c-text: #f8fafc;
  --c-text-muted: #94a3b8;
  --c-text-subtle: #64748b;

  --border-gold: 1px solid rgba(212, 175, 55, 0.35);
  --shadow-gold: 0 10px 30px -10px rgba(212, 175, 55, 0.3);
  --shadow-card: 0 15px 35px rgba(0, 0, 0, 0.6);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;

  --transition: all 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html, body {
  width: 100%;
  min-height: 100%;
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* Thanh cuộn phong cách mạ vàng */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #060810;
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--c-gold), var(--c-crimson));
  border-radius: 4px;
}

/* ==========================================================================
   HEADER / THANH ĐIỀU HƯỚNG CHÍNH
   ========================================================================== */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: rgba(6, 8, 16, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  z-index: 100;
  transition: var(--transition);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
}

.brand-logo-img {
  width: 50px;
  height: 50px;
  object-fit: contain;
  filter: drop-shadow(0 0 10px var(--c-orange-glow));
  transition: var(--transition);
}

.brand-wrapper:hover .brand-logo-img {
  transform: rotate(15deg) scale(1.08);
}

.brand-info h1 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff 20%, var(--c-gold-light) 60%, var(--c-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.5px;
}

.brand-info p {
  font-size: 0.75rem;
  color: var(--c-text-muted);
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-info p span.badge-34 {
  background: linear-gradient(135deg, var(--c-crimson), #c0392b);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(255, 215, 0, 0.4);
}

/* Bộ điều khiển chuyển đổi Chế độ xem & Âm thanh */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.view-mode-toggle {
  display: flex;
  background: rgba(255, 255, 255, 0.06);
  padding: 4px;
  border-radius: var(--radius-full);
  border: var(--border-gold);
}

.mode-btn {
  background: transparent;
  border: none;
  color: var(--c-text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.mode-btn.active {
  background: linear-gradient(135deg, var(--c-gold), #b8860b);
  color: #000;
  box-shadow: 0 2px 10px rgba(212, 175, 55, 0.4);
}

.btn-icon {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--c-text);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.btn-icon:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
  box-shadow: 0 0 12px var(--c-gold-glow);
}

.btn-icon.active {
  border-color: var(--c-gold);
  color: var(--c-gold);
  animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
  0% { box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(212, 175, 55, 0); }
  100% { box-shadow: 0 0 0 0 rgba(212, 175, 55, 0); }
}

/* ==========================================================================
   KHÔNG GIAN TRẢI NGHIỆM 3D (3D VIEWPORT)
   ========================================================================== */
#view-3d-wrapper {
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  height: calc(100vh - 80px);
  z-index: 10;
  background-color: var(--c-bg);
}

#canvas-3d-container {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}

/* Hướng dẫn điều khiển 3D trực quan */
.controls-hint {
  position: absolute;
  bottom: 85px;
  right: 2rem;
  background: rgba(10, 14, 24, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(212, 175, 55, 0.35);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  color: var(--c-gold-light);
  font-size: 0.78rem;
  pointer-events: auto;
  z-index: 15;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.6);
}

/* Thẻ HUD nổi 3D thông tin địa danh */
.hud-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem 2.5rem;
  z-index: 12;
}

.hud-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

/* Bộ lọc vùng miền nhanh */
.region-chips {
  pointer-events: auto;
  display: flex;
  gap: 0.5rem;
  background: rgba(10, 14, 24, 0.8);
  backdrop-filter: blur(12px);
  padding: 6px 10px;
  border-radius: var(--radius-full);
  border: var(--border-gold);
}

.chip-btn {
  background: transparent;
  border: none;
  color: var(--c-text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
}

.chip-btn:hover {
  color: #fff;
}

.chip-btn.active {
  background: linear-gradient(135deg, var(--c-crimson), #7b111a);
  color: #fff;
  border: 1px solid var(--c-gold);
}

.chip-btn.chip-island {
  background: rgba(158, 26, 36, 0.25);
  border: 1px solid rgba(212, 175, 55, 0.5);
  color: #ffd166;
  font-weight: 600;
}

.chip-btn.chip-island:hover,
.chip-btn.chip-island.active {
  background: linear-gradient(135deg, #da251d, #9e1a24);
  color: #fff;
  border-color: #ffd166;
  box-shadow: 0 0 14px rgba(218, 37, 29, 0.6);
}

.hud-quick-actions {
  pointer-events: auto;
  display: flex;
  gap: 0.5rem;
}

.chip-btn.chip-overview {
  background: linear-gradient(135deg, rgba(27, 67, 50, 0.85), rgba(45, 106, 79, 0.7));
  border: 1px solid rgba(82, 183, 136, 0.6);
  color: #d8f3dc;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.chip-btn.chip-overview:hover {
  background: linear-gradient(135deg, var(--c-jade), #1b4332);
  color: #fff;
  border-color: var(--c-gold);
  box-shadow: 0 0 16px rgba(82, 183, 136, 0.6);
  transform: translateY(-1px);
}

/* Thẻ thông tin địa danh nổi bật (Spot Card Glassmorphism) */
.spot-card-glass {
  pointer-events: auto;
  max-width: 450px;
  background: rgba(12, 16, 26, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  box-shadow: var(--shadow-card), 0 0 35px rgba(0, 0, 0, 0.85);
  position: relative;
  overflow: hidden;
  animation: cardFadeIn 0.5s ease-out;
}

@keyframes cardFadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.spot-card-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--c-crimson), var(--c-gold), var(--c-jade));
}

.spot-badge-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.8rem;
}

.spot-stt {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-gold);
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.spot-stt small {
  font-size: 0.8rem;
  color: var(--c-text-muted);
}

.spot-merged-tag {
  background: rgba(212, 175, 55, 0.12);
  color: var(--c-gold-light);
  border: 1px solid rgba(212, 175, 55, 0.35);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.spot-province-title {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 0.3rem;
}

.spot-landmark-subtitle {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-gold);
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.spot-tagline {
  font-style: italic;
  font-size: 0.88rem;
  color: #e2e8f0;
  border-left: 3px solid var(--c-crimson);
  padding-left: 10px;
  margin-bottom: 1rem;
}

.spot-desc {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  line-height: 1.6;
  margin-bottom: 1.2rem;
  max-height: 90px;
  overflow-y: auto;
}

.spot-tips-box {
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 1.4rem;
  border-left: 3px solid var(--c-jade-light);
}

.spot-tips-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--c-jade-light);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.spot-tips-content {
  font-size: 0.8rem;
  color: #cbd5e1;
  line-height: 1.4;
}

.spot-card-actions {
  display: flex;
  gap: 0.8rem;
}

.btn-primary {
  flex: 1;
  background: linear-gradient(135deg, var(--c-crimson), #7b111a);
  color: #fff;
  border: 1px solid var(--c-gold);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-primary:hover {
  box-shadow: 0 4px 15px rgba(158, 26, 36, 0.5), 0 0 15px var(--c-gold-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--c-gold);
  color: var(--c-gold);
}

/* Bộ điều hướng dưới đáy (HUD Bottom Bar) */
.hud-bottom-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  width: 100%;
}

.flight-controls {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  background: rgba(10, 14, 24, 0.88);
  backdrop-filter: blur(16px);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: var(--border-gold);
  box-shadow: var(--shadow-card);
}

.nav-ctrl-btn {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.1rem;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.nav-ctrl-btn:hover {
  background: rgba(212, 175, 55, 0.2);
  color: var(--c-gold);
}

.auto-tour-btn {
  background: linear-gradient(135deg, var(--c-gold), #b8860b);
  color: #000;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.auto-tour-btn:hover {
  box-shadow: 0 0 15px var(--c-gold-glow);
  transform: scale(1.05);
}

.auto-tour-btn.playing {
  background: linear-gradient(135deg, var(--c-crimson), #7b111a);
  color: #fff;
}

/* Thanh lộ trình chữ S (Timeline Scrubber) */
.scurve-timeline {
  pointer-events: auto;
  width: 100%;
  max-width: 900px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  background: rgba(10, 14, 24, 0.85);
  backdrop-filter: blur(12px);
  padding: 10px 16px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.15);
  overflow-x: auto;
}

.scurve-step-dot {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.scurve-step-dot:hover {
  background: var(--c-gold-light);
  transform: scale(1.3);
}

.scurve-step-dot.active {
  background: var(--c-gold);
  border-color: #fff;
  transform: scale(1.4);
  box-shadow: 0 0 10px var(--c-gold);
}

.scurve-step-dot::after {
  content: attr(data-title);
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #000;
  color: var(--c-gold);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  border: 1px solid var(--c-gold);
  z-index: 50;
}

.scurve-step-dot:hover::after {
  opacity: 1;
}

/* ==========================================================================
   CHẾ ĐỘ XEM DỌC TẠP CHÍ (VERTICAL EDITORIAL STREAM)
   ========================================================================== */
#view-vertical-wrapper {
  padding-top: 100px;
  padding-bottom: 40px;
  min-height: 100vh;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
  display: none;
}

.vertical-hero {
  text-align: center;
  margin-bottom: 3.5rem;
  position: relative;
}

.vertical-hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-gold);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
  display: inline-block;
  border-bottom: 1px solid var(--c-gold);
  padding-bottom: 4px;
}

.vertical-hero h2 {
  font-family: var(--font-serif);
  font-size: 2.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff 30%, var(--c-gold-light) 70%, var(--c-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.vertical-hero p {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  max-width: 750px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

/* Thanh tìm kiếm & lọc chế độ dọc */
.vertical-filter-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.2rem;
  background: rgba(18, 24, 38, 0.7);
  backdrop-filter: blur(16px);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  border: var(--border-gold);
  margin-bottom: 3rem;
}

.vertical-search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  flex: 1;
  max-width: 400px;
}

.vertical-search-box input {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 0.9rem;
  width: 100%;
  outline: none;
}

.vertical-search-box input::placeholder {
  color: var(--c-text-subtle);
}

/* Danh sách 34 thẻ bài chuyên sâu (Editorial Cards) */
.editorial-grid {
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
  margin-bottom: 4rem;
}

.editorial-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  background: var(--c-bg-card);
  border-radius: var(--radius-lg);
  border: var(--border-gold);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition);
}

.editorial-card:hover {
  transform: translateY(-5px);
  border-color: var(--c-gold-light);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.7), 0 0 25px var(--c-gold-glow);
}

.editorial-card.reverse {
  grid-template-columns: 1fr 1.2fr;
}

.editorial-card.reverse .editorial-media {
  order: 2;
}

.editorial-media {
  position: relative;
  overflow: hidden;
  min-height: 380px;
  cursor: pointer;
}

.editorial-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.editorial-media:hover .editorial-img {
  transform: scale(1.06);
}

.media-tag-stt {
  position: absolute;
  top: 1.2rem;
  left: 1.2rem;
  background: rgba(10, 14, 24, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--c-gold);
  color: var(--c-gold);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  padding: 4px 12px;
  border-radius: var(--radius-md);
  z-index: 2;
}

.media-zoom-overlay {
  position: absolute;
  bottom: 1.2rem;
  right: 1.2rem;
  background: rgba(10, 14, 24, 0.8);
  color: #fff;
  font-size: 0.8rem;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition);
}

.editorial-media:hover .media-zoom-overlay {
  opacity: 1;
  transform: translateY(0);
}

.editorial-content {
  padding: 2.2rem 2.5rem 2.2rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.editorial-card.reverse .editorial-content {
  padding: 2.2rem 1rem 2.2rem 2.5rem;
}

.editorial-merged-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(158, 26, 36, 0.2);
  color: #fca5a5;
  border: 1px solid rgba(158, 26, 36, 0.5);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 0.8rem;
  width: fit-content;
}

.editorial-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.3rem;
  line-height: 1.2;
}

.editorial-landmark {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--c-gold);
  margin-bottom: 0.8rem;
}

.editorial-tagline {
  font-style: italic;
  font-size: 0.92rem;
  color: #cbd5e1;
  border-left: 3px solid var(--c-gold);
  padding-left: 12px;
  margin-bottom: 1.2rem;
}

.editorial-desc {
  font-size: 0.9rem;
  color: var(--c-text-muted);
  line-height: 1.65;
  margin-bottom: 1.4rem;
}

.editorial-details-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  background: rgba(0, 0, 0, 0.25);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.detail-item h4 {
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--c-gold-light);
  margin-bottom: 4px;
}

.detail-item p {
  font-size: 0.82rem;
  color: #e2e8f0;
  line-height: 1.4;
}

.editorial-actions {
  display: flex;
  gap: 1rem;
}

/* ==========================================================================
   MODAL XEM ẢNH KHỔ LỚN HD & CHI TIẾT
   ========================================================================== */
.photo-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(3, 5, 8, 0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.photo-modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.photo-modal-card {
  width: 100%;
  max-width: 1050px;
  background: var(--c-bg-surface);
  border: var(--border-gold);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.9);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  max-height: 90vh;
  position: relative;
  animation: modalScaleUp 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes modalScaleUp {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: var(--transition);
}

.modal-close-btn:hover {
  background: var(--c-crimson);
  border-color: var(--c-gold);
  color: var(--c-gold-light);
}

.modal-image-col {
  position: relative;
  background: #000;
}

.modal-image-col img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-info-col {
  padding: 2.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.modal-info-col h3 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  color: #fff;
  margin-bottom: 0.3rem;
}

.modal-info-col h4 {
  font-size: 1.15rem;
  color: var(--c-gold);
  margin-bottom: 1rem;
}

/* ==========================================================================
   FOOTER TRANG TRỌNG
   ========================================================================== */
.main-footer {
  background: #05070a;
  border-top: 1px solid rgba(212, 175, 55, 0.2);
  padding: 3rem 2rem;
  text-align: center;
  position: relative;
  z-index: 20;
}

.footer-content {
  max-width: 800px;
  margin: 0 auto;
}

.footer-logo {
  width: 44px;
  height: 44px;
  margin-bottom: 1rem;
  filter: drop-shadow(0 0 10px var(--c-orange-glow));
}

.footer-quote {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--c-gold-light);
  font-style: italic;
  margin-bottom: 0.8rem;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--c-text-subtle);
  line-height: 1.6;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MOBILE & TABLET)
   ========================================================================== */
@media (max-width: 992px) {
  .main-header {
    padding: 0 1rem;
  }
  .brand-info p {
    display: none;
  }
  .spot-card-glass {
    max-width: 100%;
  }
  .hud-overlay {
    padding: 1rem;
  }
  .controls-hint {
    display: none;
  }
  .editorial-card,
  .editorial-card.reverse {
    grid-template-columns: 1fr;
  }
  .editorial-card.reverse .editorial-media {
    order: 0;
  }
  .editorial-content,
  .editorial-card.reverse .editorial-content {
    padding: 1.8rem;
  }
  .photo-modal-card {
    grid-template-columns: 1fr;
    max-height: 95vh;
  }
  .modal-image-col {
    height: 280px;
  }
}