/* ==========================================================================
   HỒI XUÂN ĐƯỜNG — 3D MERIDIAN HERO THEATRE (STANDALONE MODULE)
   - Font tiêu chuẩn Website gốc: Playfair Display + Be Vietnam Pro
   - Màu sắc nhận diện chuẩn Đông Y Hoàng Gia
   - Tối ưu tuyệt đối để nhúng trực tiếp vào Hero Session của Website gốc
   ========================================================================== */

:root {
  /* Brand Palette from Original Website */
  --c-primary-green: #2f4a26;
  --c-green-800: #3d5c33;
  --c-green-700: #4f7440;
  --c-green-100: #eef4e7;
  --c-green-50: #f6f9f1;
  --c-gold: #b8912f;
  --c-gold-light: #cba646;
  --c-crimson: #ff1744;
  --c-cream-bg: #fffdf8;
  --c-ink: #28321f;
  --c-ink-soft: #5b6650;
  --c-white: #ffffff;

  /* Typography Matching Original Website */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--c-cream-bg);
  color: var(--c-ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================
   0. AMBIENT BACKGROUND VIDEO (Ao Sen)
   ========================================== */
.pond-bg-video {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

/* Làm dịu video đủ mạnh để chữ xanh lá thương hiệu không bị "hòa" vào tông
   xanh ngọc của video — đậm hơn ở mép trên/dưới nơi đặt header & sidebar. */
.pond-bg-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 253, 248, 0.82) 0%, rgba(255, 253, 248, 0.45) 22%, rgba(255, 253, 248, 0.4) 68%, rgba(255, 253, 248, 0.78) 100%);
}

/* Lớp sáng riêng ngay dưới header để logo/tiêu đề luôn nổi rõ dù video sáng hay tối */
.pond-bg-overlay::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 230px;
  background: linear-gradient(180deg, rgba(255, 253, 248, 0.65) 0%, rgba(255, 253, 248, 0) 100%);
}

/* ==========================================
   1. FIXED FULLSCREEN 3D WEBGL STAGE
   ========================================== */
.hero-3d-stage-canvas {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: auto;
  background: transparent; /* Để lộ video ao sen phía sau */
}

/* ==========================================
   2. MINIMAL FIXED BRAND SIGNATURE HEADER
   ========================================== */
.site-header-minimal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: flex-start;
  padding: 20px 48px 0 48px;
  background: transparent !important;
  pointer-events: none;
}

.header-inner {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: auto;
}

.brand-signature-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-signature {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  cursor: pointer;
}

.brand-link-about {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--c-primary-green);
  text-decoration: none;
  margin-left: 58px; /* Căn thẳng hàng với chữ Hồi Xuân Đường */
  margin-top: 6px;
  width: fit-content;
  padding: 6px 14px;
  background: rgba(184, 145, 47, 0.14);
  border: 1px solid rgba(184, 145, 47, 0.55);
  border-radius: 20px;
  transition: var(--transition-smooth);
}

.brand-link-about:hover {
  color: #ffffff;
  background: var(--c-gold);
  border-color: var(--c-gold);
  transform: translateX(3px);
  box-shadow: 0 4px 14px rgba(184, 145, 47, 0.35);
}

.brand-link-about .link-arrow {
  font-size: 13px;
  transition: transform 0.25s ease;
}

.brand-link-about:hover .link-arrow {
  transform: translateX(4px);
}

.brand-logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(47, 74, 38, 0.15));
}

.brand-text-col {
  display: flex;
  flex-direction: column;
}

.brand-title-main {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--c-primary-green);
  line-height: 1.1;
  text-shadow: 0 1px 10px rgba(255, 253, 248, 0.9), 0 1px 2px rgba(255, 253, 248, 0.9);
}

.brand-sub-badge {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--c-gold);
  text-transform: uppercase;
  text-shadow: 0 1px 8px rgba(255, 253, 248, 0.9);
}

/* ==========================================
   3. INTERACTIVE 3D THEATRE OVERLAY
   ========================================== */
.theatre-stage-ui {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 124px 56px 36px 56px;
  max-width: 1600px;
  margin: 0 auto;
}

/* Left Editorial Typography — frosted scrim behind it so text stays readable
   no matter what's behind it in the 3D canvas (dark torso, bright particles, etc.) */
.theatre-left-editorial {
  position: relative;
  max-width: 440px;
  max-height: calc(100vh - 160px);
  overflow: hidden; /* Khung nền mờ luôn cố định, không trôi theo nội dung cuộn */
  border: none !important;
  box-shadow: none !important;
  padding: 28px 32px !important;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Chỉ phần nội dung dài (chỉ định/kỹ thuật/lưu ý) cuộn được — tiêu đề huyệt
   và kênh kinh lạc luôn đứng yên phía trên, nền mờ luôn phủ trọn khung. */
.editorial-scroll-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-right: 6px;
  margin-right: -6px;
}

.editorial-scroll-body::-webkit-scrollbar {
  width: 4px;
}
.editorial-scroll-body::-webkit-scrollbar-thumb {
  background: rgba(184, 145, 47, 0.35);
  border-radius: 4px;
}

.theatre-left-editorial::before {
  content: "";
  position: absolute;
  inset: 0; /* Khớp đúng khung thật — tránh lệch vị trí/chiều cao so với sidebar bên phải */
  z-index: -1;
  border-radius: 28px;
  background: linear-gradient(115deg,
    rgba(255, 253, 248, 0.55) 0%,
    rgba(255, 253, 248, 0.42) 55%,
    rgba(255, 253, 248, 0.16) 85%,
    rgba(255, 253, 248, 0) 100%);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

/* Timeline Synchronized Staggered Reveal Animations
   — Nhịp độ căn theo camera 3D (easeInOutQuart, 1.4s) để chữ và huyệt đạo
     chuyển cảnh cùng tốc độ, mượt mà thay vì giật nhanh. */
.theatre-left-editorial.animate-in .editorial-title {
  animation: editorialFadeUp 0.8s cubic-bezier(0.65, 0, 0.35, 1) forwards 0s;
}
.theatre-left-editorial.animate-in .editorial-channel {
  animation: editorialFadeUp 0.8s cubic-bezier(0.65, 0, 0.35, 1) forwards 0.06s;
}
.theatre-left-editorial.animate-in .indication-block {
  animation: editorialFadeUp 0.85s cubic-bezier(0.65, 0, 0.35, 1) forwards 0.12s;
}
.theatre-left-editorial.animate-in .technique-block {
  animation: editorialFadeUp 0.9s cubic-bezier(0.65, 0, 0.35, 1) forwards 0.18s;
}
.theatre-left-editorial.animate-in .caution-text-block {
  animation: editorialFadeUp 0.95s cubic-bezier(0.65, 0, 0.35, 1) forwards 0.24s;
}
.theatre-left-editorial.animate-in .editorial-cta-group {
  animation: editorialFadeUp 1s cubic-bezier(0.65, 0, 0.35, 1) forwards 0.3s;
}

.theatre-left-editorial.animate-out {
  opacity: 0;
  transform: translateY(-8px);
  filter: blur(4px);
  transition: all 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}

@keyframes editorialFadeUp {
  0% {
    opacity: 0;
    transform: translateY(14px);
    filter: blur(5px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0px);
  }
}

.editorial-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 700;
  color: var(--c-primary-green);
  line-height: 1.15;
  letter-spacing: -0.4px;
  text-shadow: 0 2px 18px rgba(255, 255, 255, 0.95);
  margin-bottom: 0px;
  opacity: 0;
  font-feature-settings: "lnum" 1, "pnum" 1; /* lining, tabular figures — keeps digits level with caps */
}

/* Trailing "(MÃ HUYỆT)" — never wraps mid-code, sized down to sit level with the caps beside it */
.editorial-code {
  display: inline-block;
  white-space: nowrap;
  overflow-wrap: normal;
  word-break: keep-all;
  font-size: 0.58em;
  font-weight: 700;
  vertical-align: 0.08em;
}

.editorial-channel {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 2px;
  opacity: 0;
}

.editorial-field-block {
  opacity: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0 !important;
  padding: 0 !important;
}

.field-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--c-green-800);
  margin-bottom: 0;
}

.editorial-desc {
  font-size: 13.5px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--c-ink-soft);
  text-shadow: 0 1px 6px rgba(255, 255, 255, 0.9);
  margin: 0;
}

/* Medical Doctor Caution — set apart as its own soft card so dense warning
   text reads as a distinct, scannable block instead of running into the rest. */
.caution-text-block {
  margin-top: 0 !important;
  background: rgba(179, 57, 39, 0.07);
  border-left: 3px solid #b33927;
  border-radius: 10px;
  padding: 10px 14px !important;
}

.caution-label {
  color: #b33927 !important;
}

.caution-desc {
  color: #6d412b !important;
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.6;
}

.editorial-cta-group {
  display: flex;
  margin-top: 4px;
  max-width: 200px;
  opacity: 0;
}

.btn-view-full-body {
  width: 100%;
  background: rgba(255, 255, 255, 0.75);
  color: var(--c-primary-green);
  border: 1px solid rgba(47, 74, 38, 0.25);
  padding: 8px 16px;
  border-radius: 30px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(47, 74, 38, 0.06);
  transition: var(--transition-smooth);
}

.btn-view-full-body:hover {
  background: rgba(255, 255, 255, 0.98);
  border-color: var(--c-primary-green);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(47, 74, 38, 0.15);
}

/* ==========================================
   4. RIGHT SIDEBAR: 12 ACUPOINTS LIST (ULTRA TRANSLUCENT GLASS)
   ========================================== */
.theatre-right-sidebar {
  width: 310px;
  max-height: calc(100vh - 160px);
  background: rgba(255, 253, 248, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(184, 145, 47, 0.28);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(47, 74, 38, 0.12);
  pointer-events: auto;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(184, 145, 47, 0.18);
  margin-bottom: 10px;
}

.sidebar-title {
  display: block;
  font-size: 13.5px;
  font-weight: 800;
  letter-spacing: 0.4px;
  line-height: 1.3;
  color: var(--c-primary-green);
}

.sidebar-hint {
  display: block;
  margin-top: 4px;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--c-gold);
}

.acupoints-scroll-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-right: 4px;
}

.acupoints-scroll-list::-webkit-scrollbar {
  width: 4px;
}
.acupoints-scroll-list::-webkit-scrollbar-thumb {
  background: rgba(184, 145, 47, 0.35);
  border-radius: 4px;
}

.btn-acu-item {
  width: 100%;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 12px;
  padding: 9px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-acu-item:hover {
  background: rgba(255, 255, 255, 0.88);
  border-color: rgba(184, 145, 47, 0.45);
  transform: translateX(-2px);
}

.btn-acu-item.active {
  background: linear-gradient(135deg, #ff1744 0%, #d50000 100%);
  border-color: #ff1744;
  box-shadow: 0 4px 14px rgba(255, 23, 68, 0.35);
  transform: translateX(-3px);
}

.acu-idx {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-gold);
}

.btn-acu-item.active .acu-idx {
  color: #ffffff;
}

.acu-info-col {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.acu-name-txt {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-primary-green);
  line-height: 1.2;
}

/* Sidebar list uses the sans body font (no oldstyle-figure issue) — just keep the code intact */
.acu-name-txt .editorial-code {
  font-size: 1em;
  vertical-align: baseline;
}

.btn-acu-item.active .acu-name-txt {
  color: #ffffff;
}

.acu-chan-txt {
  font-size: 11px;
  color: var(--c-ink-soft);
}

.btn-acu-item.active .acu-chan-txt {
  color: rgba(255, 255, 255, 0.9);
}

.acu-arrow {
  font-size: 15px;
  color: var(--c-ink-soft);
  transition: transform 0.2s ease;
}

.btn-acu-item.active .acu-arrow {
  color: #ffffff;
  transform: translateX(2px);
}

@media (max-width: 1024px) {
  .theatre-stage-ui {
    flex-direction: column;
    justify-content: flex-end;
    padding: 118px 20px 20px 20px;
    gap: 16px;
  }
  .theatre-left-editorial {
    max-width: 100%;
    max-height: min(360px, 44vh);
    order: 2;
  }
  .theatre-right-sidebar {
    width: 100%;
    max-height: 200px;
    order: 1;
  }
}

/* ==========================================
   PHONE-SPECIFIC REFINEMENTS (≤600px)
   ========================================== */
@media (max-width: 600px) {
  .site-header-minimal {
    padding: 14px 16px 0 16px;
  }
  .brand-logo-img {
    width: 36px;
    height: 36px;
  }
  .brand-title-main {
    font-size: 15px;
    letter-spacing: 0.8px;
  }
  .brand-sub-badge {
    font-size: 7.5px;
    letter-spacing: 1px;
  }
  .brand-link-about {
    font-size: 9.5px;
    letter-spacing: 0.8px;
    padding-left: 44px;
  }

  .theatre-stage-ui {
    padding: 94px 12px 12px 12px;
    gap: 10px;
  }

  .theatre-left-editorial {
    max-height: min(320px, 42vh);
    padding: 18px 16px !important;
    border-radius: 20px;
    gap: 6px;
  }
  .theatre-left-editorial::before {
    border-radius: 20px;
  }

  .editorial-title {
    font-size: clamp(19px, 6.4vw, 25px);
  }
  .editorial-channel {
    font-size: 10px;
  }
  .editorial-scroll-body {
    gap: 12px;
  }
  .field-label {
    font-size: 10px;
  }
  .editorial-desc {
    font-size: 12.5px;
    line-height: 1.55;
  }
  .caution-desc {
    font-size: 11.5px;
  }
  .btn-view-full-body {
    font-size: 11.5px;
    padding: 7px 14px;
  }

  .theatre-right-sidebar {
    max-height: 180px;
    padding: 14px;
    border-radius: 16px;
  }
  .sidebar-title {
    font-size: 12px;
  }
  .sidebar-hint {
    font-size: 10.5px;
  }
  .btn-acu-item {
    padding: 7px 10px;
  }
  .acu-name-txt {
    font-size: 12px;
  }
  .acu-chan-txt {
    font-size: 10px;
  }

  .gemini-chat-widget {
    bottom: 14px;
    right: 14px;
  }
  .btn-chat-trigger {
    width: 48px;
    height: 48px;
    font-size: 20px;
  }
  .chat-window {
    width: calc(100vw - 28px);
    right: -2px;
  }
}

/* ==========================================
   5. GEMINI AI ASSISTANT CHAT WIDGET
   ========================================== */
.gemini-chat-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
}

.btn-chat-trigger {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2f4a26 0%, #1e3318 100%);
  border: 2px solid #b8912f;
  color: #ffffff;
  font-size: 24px;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(47, 74, 38, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-chat-trigger:hover {
  transform: scale(1.08);
}

.chat-pulse {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid #b8912f;
  animation: chatPulseRing 2s infinite;
  opacity: 0;
}

@keyframes chatPulseRing {
  0% { transform: scale(0.95); opacity: 0.8; }
  100% { transform: scale(1.35); opacity: 0; }
}

.chat-window {
  position: absolute;
  bottom: 68px;
  right: 0;
  width: 360px;
  height: 480px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(184, 145, 47, 0.3);
  border-radius: 20px;
  box-shadow: 0 16px 48px rgba(47, 74, 38, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px) scale(0.96);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.chat-window.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.chat-header {
  background: linear-gradient(135deg, #2f4a26 0%, #3d5c33 100%);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #ffffff;
}

.chat-title {
  display: block;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
}

.chat-subtitle {
  font-size: 10.5px;
  color: #dfb164;
  letter-spacing: 0.5px;
}

.btn-chat-close {
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 16px;
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.btn-chat-close:hover {
  opacity: 1;
}

.chat-messages-body {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.msg-bubble {
  max-width: 82%;
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.45;
  border-radius: 14px;
}

.msg-bot {
  background: #f4f8f0;
  border: 1px solid rgba(47, 74, 38, 0.12);
  color: #28321f;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.msg-user {
  background: #2f4a26;
  color: #ffffff;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.msg-typing span {
  animation: blinkTyping 1.4s infinite both;
  font-size: 20px;
  line-height: 10px;
}
.msg-typing span:nth-child(2) { animation-delay: 0.2s; }
.msg-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes blinkTyping {
  0%, 80%, 100% { opacity: 0.2; }
  40% { opacity: 1; }
}

.chat-quick-suggestions {
  display: flex;
  gap: 6px;
  padding: 6px 14px;
  overflow-x: auto;
  background: #faf8f5;
  border-top: 1px solid #f0ebe4;
}

.btn-quick-tag {
  white-space: nowrap;
  background: #ffffff;
  border: 1px solid rgba(184, 145, 47, 0.3);
  color: #2f4a26;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-quick-tag:hover {
  background: #2f4a26;
  color: #ffffff;
}

.chat-input-row {
  display: flex;
  padding: 10px 14px;
  background: #ffffff;
  border-top: 1px solid #eee7dd;
  gap: 8px;
}

.chat-input-field {
  flex: 1;
  border: 1px solid #e2dad0;
  border-radius: 20px;
  padding: 8px 14px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  outline: none;
  transition: border-color 0.2s ease;
}

.chat-input-field:focus {
  border-color: #b8912f;
}

.btn-chat-send {
  background: #b8912f;
  color: #ffffff;
  border: none;
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.btn-chat-send:hover {
  background: #2f4a26;
}