/* ==========================================================================
   BẾP 1979 - GRAND COMMERCIAL INTRO SHOWCASE (10-SECOND AD TRAILER)
   Thiết kế dạng Trailer Quảng Cáo Toàn Diện Website:
   1. Dynamic Stage Navigation (4 Cảnh Quảng Cáo chạy cuốn theo Timeline 10s)
   2. Scene 1: Brand & Hương Vị Độc Bản
   3. Scene 2: Thực Đơn Trực Tuyến & Món Nóng Giao 20 Phút
   4. Scene 3: Flash Sale Khủng & Voucher Giờ Vàng
   5. Scene 4: Đánh Giá 5 Sao & Đặt Bàn / Đặt Món Tiện Lợi
   6. Fullscreen Cinematic Atmosphere, Glassmorphism, Interactive Controls
   ========================================================================== */

:root {
  --ad-orange: #ff4b1f;
  --ad-gold: #ffb830;
  --ad-amber: #ff8c00;
  --ad-dark: #090403;
}

.fh-ad-intro {
  position: fixed;
  inset: 0;
  z-index: 99999999;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--ad-dark);
  background: 
    radial-gradient(circle at 50% 20%, rgba(75, 25, 7, 0.96) 0%, rgba(24, 8, 2, 0.98) 50%, #060201 100%);
  color: #fff;
  overflow: hidden;
  user-select: none;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), transform 0.85s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.85s;
  padding: 24px 36px 28px;
  box-sizing: border-box;
}

.fh-ad-intro.intro-exit {
  opacity: 0;
  transform: scale(1.05);
  visibility: hidden;
  pointer-events: none;
}

/* Background Atmospheric Elements */
.intro-canvas-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.intro-ambient-glow {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(255, 94, 0, 0.28) 0%, rgba(255, 179, 0, 0.1) 45%, transparent 70%);
  filter: blur(70px);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  animation: ambientBreathe 5s ease-in-out infinite alternate;
}

@keyframes ambientBreathe {
  0% { transform: translate(-50%, -50%) scale(0.9); opacity: 0.7; }
  100% { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
}

/* 1. Header Bar: Brand Indicator, Progress Steps, Sound & Skip */
.intro-top-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.intro-brand-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 8px 18px;
  border-radius: 999px;
  backdrop-filter: blur(16px);
}

.intro-brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: #ff5722 url("../images/brand-logo.png?v=20260917") center / cover no-repeat;
  color: transparent;
  font-size: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(255, 75, 31, 0.4);
}

.intro-brand-text strong {
  display: block;
  font-size: 15px;
  font-weight: 900;
  letter-spacing: -0.2px;
  color: #fff;
  line-height: 1.1;
}

.intro-brand-text small {
  font-size: 11px;
  color: #ff9d66;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

/* Scene Step Indicator Pills */
.intro-scene-stepper {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(12px);
}

.intro-step-pill {
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.55);
  font-size: 12.5px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.intro-step-pill:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.intro-step-pill.active {
  background: linear-gradient(135deg, #ff4b1f, #ff8c00);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 75, 31, 0.45);
}

.intro-nav-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.intro-glass-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #fff;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(14px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.intro-glass-btn:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
}

/* 2. Main Stage (Trailer Viewport) */
.intro-stage-container {
  position: relative;
  z-index: 5;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 0;
}

.intro-scene-slide {
  display: none;
  width: 100%;
  animation: sceneSlideIn 0.55s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.intro-scene-slide.active {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

@keyframes sceneSlideIn {
  0% { opacity: 0; transform: translateY(20px) scale(0.97); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

.intro-slide-text {
  flex: 1;
  max-width: 580px;
}

.intro-tag-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 87, 34, 0.2);
  border: 1px solid rgba(255, 120, 60, 0.45);
  color: #ffab7a;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
  box-shadow: 0 0 16px rgba(255, 87, 34, 0.3);
}

.intro-headline {
  font-size: 48px;
  font-weight: 950;
  line-height: 1.12;
  letter-spacing: -1.2px;
  background: linear-gradient(135deg, #ffffff 20%, #ffe0b2 60%, #ff7043 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 14px;
  filter: drop-shadow(0 4px 20px rgba(255, 87, 34, 0.3));
}

.intro-description {
  font-size: 17px;
  color: #edd5c8;
  line-height: 1.55;
  margin-bottom: 24px;
}

.intro-feature-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.intro-feature-chip {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 7px 14px;
  border-radius: 12px;
  font-size: 13.5px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #fff;
  backdrop-filter: blur(10px);
}

.intro-cta-action {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, #ff4b1f, #ff8c00);
  color: #fff;
  border: none;
  padding: 13px 32px;
  border-radius: 999px;
  font-size: 15.5px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(255, 75, 31, 0.5), inset 0 2px 4px rgba(255, 255, 255, 0.3);
  transition: all 0.25s ease;
  text-decoration: none;
}

.intro-cta-action:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 14px 36px rgba(255, 75, 31, 0.7);
}

/* Visual Mockup Displays (Right Side of Slide) */
.intro-slide-visual {
  flex: 1;
  max-width: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Scene 1: Brand Cloche Showcase */
.intro-visual-cloche {
  position: relative;
  width: 280px;
  height: 280px;
  cursor: pointer;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.intro-visual-cloche:hover {
  transform: scale(1.08) rotateX(10deg);
}

.intro-visual-cloche svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 20px 45px rgba(255, 87, 34, 0.6));
}

.cloche-interactive-hint {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #ff4b1f, #ff9b2f);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  padding: 5px 14px;
  border-radius: 999px;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(255, 75, 31, 0.5);
  animation: hintFloat 2s ease-in-out infinite alternate;
}

@keyframes hintFloat {
  0% { transform: translateX(-50%) translateY(0); }
  100% { transform: translateX(-50%) translateY(-6px); }
}

/* Scene 2: Grid of 4 Signature Foods */
.intro-visual-food-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  width: 100%;
}

.intro-food-card-interactive {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 18px;
  padding: 14px;
  cursor: pointer;
  backdrop-filter: blur(14px);
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  text-align: left;
}

.intro-food-card-interactive:hover {
  transform: translateY(-6px) scale(1.04);
  border-color: #ff9b2f;
  box-shadow: 0 14px 34px rgba(255, 87, 34, 0.45);
  background: rgba(255, 255, 255, 0.12);
}

.intro-food-emoji-wrap {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 10px;
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.2);
}

.intro-food-name {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 2px;
}

.intro-food-desc {
  font-size: 12px;
  color: #ffaa7d;
  font-weight: 600;
}

/* Scene 3: Flash Sale & Voucher Card */
.intro-visual-promo-box {
  width: 100%;
  background: linear-gradient(145deg, rgba(255, 75, 31, 0.18) 0%, rgba(255, 140, 0, 0.08) 100%);
  border: 1.5px solid rgba(255, 120, 60, 0.5);
  border-radius: 24px;
  padding: 24px;
  backdrop-filter: blur(18px);
  box-shadow: 0 20px 50px rgba(255, 75, 31, 0.28);
}

.intro-promo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.intro-flash-tag {
  background: linear-gradient(135deg, #ff0055, #ff5500);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  padding: 6px 14px;
  border-radius: 8px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  animation: flashPulse 1.5s infinite alternate;
}

@keyframes flashPulse {
  0% { transform: scale(1); box-shadow: 0 0 12px rgba(255, 0, 85, 0.6); }
  100% { transform: scale(1.05); box-shadow: 0 0 24px rgba(255, 85, 0, 0.9); }
}

.intro-promo-timer {
  font-size: 14px;
  font-weight: 800;
  color: #ffd166;
  display: flex;
  align-items: center;
  gap: 6px;
}

.intro-voucher-ticket {
  background: rgba(255, 255, 255, 0.1);
  border: 1px dashed rgba(255, 255, 255, 0.35);
  border-radius: 16px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.intro-ticket-left strong {
  display: block;
  font-size: 18px;
  font-weight: 900;
  color: #fff;
}

.intro-ticket-left small {
  font-size: 12px;
  color: #ffbe9b;
}

.intro-ticket-btn {
  background: #fff;
  color: #d9480f;
  font-size: 13px;
  font-weight: 900;
  padding: 8px 16px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s;
}

.intro-ticket-btn:hover {
  transform: scale(1.08);
}

/* Scene 4: Trust, Reviews & Order Tracking */
.intro-visual-trust-box {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.intro-trust-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 18px;
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  backdrop-filter: blur(14px);
}

.intro-trust-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, #ff4b1f, #ff9b2f);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.intro-trust-info strong {
  display: block;
  font-size: 15px;
  font-weight: 800;
  color: #fff;
}

.intro-trust-info p {
  font-size: 12.5px;
  color: #e0beaf;
  margin-top: 2px;
}

/* 3. Bottom CTA Action Bar (Loại bỏ thanh tiến trình) */
.intro-bottom-bar {
  align-items: center;
  backdrop-filter: none;
  background: transparent;
  border: none;
  display: flex;
  justify-content: center;
  padding: 8px 0 0;
  position: relative;
  z-index: 10;
}

.intro-bottom-cta {
  background: linear-gradient(135deg, #ff4b1f, #ff8c00);
  color: #fff;
  border: none;
  padding: 10px 26px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 6px 20px rgba(255, 75, 31, 0.45);
  transition: all 0.25s ease;
}

.intro-bottom-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(255, 75, 31, 0.65);
}

/* Particle Explosion Burst on Click */
.intro-burst-fx {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 999999999;
  animation: burstParticle 0.65s cubic-bezier(0.12, 0.8, 0.32, 1) forwards;
}

@keyframes burstParticle {
  0% { transform: translate(0, 0) scale(1); opacity: 1; }
  100% { transform: translate(var(--tx), var(--ty)) scale(0); opacity: 0; }
}

/* Responsive Styles for Tablet & Mobile */
@media (max-width: 992px) {
  .fh-ad-intro {
    padding: 18px 20px 20px;
  }
  .intro-scene-slide.active {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  .intro-slide-text {
    max-width: 100%;
  }
  .intro-headline {
    font-size: 34px;
  }
  .intro-description {
    font-size: 15px;
    margin-bottom: 18px;
  }
  .intro-feature-chips {
    justify-content: center;
    margin-bottom: 18px;
  }
  .intro-slide-visual {
    max-width: 100%;
    width: 100%;
  }
  .intro-visual-cloche {
    width: 200px;
    height: 200px;
  }
}

@media (max-width: 650px) {
  .intro-top-header {
    flex-wrap: wrap;
  }
  .intro-scene-stepper {
    order: 3;
    width: 100%;
    justify-content: center;
    overflow-x: auto;
  }
  .intro-step-pill {
    padding: 4px 10px;
    font-size: 11.5px;
  }
  .intro-headline {
    font-size: 28px;
  }
  .intro-bottom-bar {
    padding: 6px 0 0;
  }
  .intro-bottom-cta {
    justify-content: center;
    max-width: 300px;
    width: 100%;
  }
}