/* ============================================
   大奶天堂 (Big Paradise) - 主样式表
   设计风格: 奢华/金色质感 (Luxury/Gold Texture)
   CSS前缀: btp-
   ============================================ */

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

/* ---- CSS Variables ---- */
:root {
  --btp-primary: #141414;
  --btp-secondary: #E0C58E;
  --btp-accent: #FFFFFF;
  --btp-text: #D4D4D4;
  --btp-link: #F8E7A9;
  --btp-gold-dark: #B8973E;
  --btp-gold-gradient: linear-gradient(135deg, #E0C58E 0%, #F8E7A9 40%, #E0C58E 60%, #B8973E 100%);
  --btp-card-bg: rgba(30, 30, 30, 0.85);
  --btp-border-gold: rgba(224, 197, 142, 0.3);
  --btp-font-heading: 'Playfair Display', serif;
  --btp-font-body: 'Roboto', sans-serif;
  --btp-radius: 8px;
  --btp-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  --btp-transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--btp-font-body);
  background-color: var(--btp-primary);
  color: var(--btp-text);
  line-height: 1.8;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--btp-link);
  text-decoration: none;
  transition: var(--btp-transition);
}

a:hover {
  color: var(--btp-secondary);
  text-shadow: 0 0 10px rgba(248, 231, 169, 0.3);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--btp-font-heading);
  color: var(--btp-secondary);
  line-height: 1.3;
  font-weight: 600;
}

/* ---- Jammer Block (Hidden SEO) ---- */
.jammer-block {
  display: none;
}

/* ---- Container ---- */
.btp-container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 768px) {
  .btp-container {
    padding: 0 40px;
  }
}

@media (min-width: 1024px) {
  .btp-container {
    padding: 0 60px;
  }
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
#btp-header {
  width: 100%;
  background: rgba(20, 20, 20, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid var(--btp-border-gold);
  transition: background 0.3s ease;
}

#btp-header.btp-scrolled {
  background: rgba(20, 20, 20, 0.97);
}

.btp-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: 1440px;
  margin: 0 auto;
}

.btp-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btp-logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.btp-logo-text {
  font-family: var(--btp-font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--btp-gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Desktop Nav */
.btp-nav-menu {
  display: none;
  list-style: none;
  gap: 0;
}

@media (min-width: 768px) {
  .btp-nav-menu {
    display: flex;
    gap: 8px;
  }
}

.btp-nav-item {
  position: relative;
}

.btp-nav-link {
  display: block;
  padding: 10px 16px;
  font-family: var(--btp-font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--btp-text);
  letter-spacing: 0.5px;
  position: relative;
  transition: var(--btp-transition);
}

.btp-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--btp-gold-gradient);
  transition: width 0.4s ease;
  border-radius: 1px;
}

.btp-nav-link:hover,
.btp-nav-link.btp-active {
  color: var(--btp-secondary);
}

.btp-nav-link:hover::after,
.btp-nav-link.btp-active::after {
  width: 70%;
}

/* Hamburger */
.btp-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
  z-index: 1100;
}

@media (min-width: 768px) {
  .btp-hamburger {
    display: none;
  }
}

.btp-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--btp-secondary);
  transition: var(--btp-transition);
  border-radius: 2px;
}

.btp-hamburger.btp-open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.btp-hamburger.btp-open span:nth-child(2) {
  opacity: 0;
}

.btp-hamburger.btp-open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Sidebar */
.btp-mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--btp-primary);
  background-image: url('../images/btp-silk-texture.webp');
  background-size: cover;
  background-blend-mode: overlay;
  z-index: 1050;
  transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  padding: 80px 30px 40px;
  border-left: 1px solid var(--btp-border-gold);
  overflow-y: auto;
}

.btp-mobile-menu.btp-open {
  right: 0;
}

.btp-mobile-menu .btp-mobile-nav-list {
  list-style: none;
}

.btp-mobile-menu .btp-mobile-nav-link {
  display: block;
  padding: 16px 0;
  font-family: var(--btp-font-heading);
  font-size: 1.15rem;
  color: var(--btp-secondary);
  border-bottom: 1px solid var(--btp-border-gold);
  letter-spacing: 1px;
}

.btp-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: var(--btp-transition);
}

.btp-overlay.btp-open {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   HERO / COVER GIRL SECTION
   ============================================ */
.btp-hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.btp-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.btp-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(20,20,20,0.3) 0%, rgba(20,20,20,0.7) 60%, rgba(20,20,20,0.95) 100%);
  z-index: 2;
}

.btp-hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 40px 20px;
  max-width: 800px;
}

.btp-hero-title {
  font-family: var(--btp-font-heading);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 800;
  background: var(--btp-gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  letter-spacing: 2px;
  animation: btp-fadeInUp 1s ease-out;
}

.btp-hero-subtitle {
  font-family: var(--btp-font-heading);
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  color: var(--btp-text);
  font-weight: 400;
  font-style: italic;
  margin-bottom: 24px;
  animation: btp-fadeInUp 1s ease-out 0.3s both;
}

.btp-hero-model-name {
  font-size: clamp(1.2rem, 3vw, 2rem);
  color: var(--btp-secondary);
  font-family: var(--btp-font-heading);
  font-weight: 600;
  margin-bottom: 30px;
  animation: btp-fadeInUp 1s ease-out 0.6s both;
}

/* ---- Buttons ---- */
.btp-btn {
  display: inline-block;
  padding: 14px 36px;
  font-family: var(--btp-font-body);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: 1px solid var(--btp-secondary);
  color: var(--btp-secondary);
  background: transparent;
  border-radius: var(--btp-radius);
  cursor: pointer;
  transition: var(--btp-transition);
  position: relative;
  overflow: hidden;
}

.btp-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--btp-gold-gradient);
  transition: left 0.4s ease;
  z-index: -1;
}

.btp-btn:hover {
  color: var(--btp-primary);
  border-color: var(--btp-secondary);
  box-shadow: 0 0 25px rgba(224, 197, 142, 0.3);
}

.btp-btn:hover::before {
  left: 0;
}

.btp-btn-primary {
  background: var(--btp-gold-gradient);
  color: var(--btp-primary);
  border: none;
  font-weight: 700;
}

.btp-btn-primary:hover {
  box-shadow: 0 0 30px rgba(224, 197, 142, 0.5);
  transform: translateY(-2px);
}

/* ============================================
   SECTION COMMON
   ============================================ */
.btp-section {
  padding: 80px 0;
  position: relative;
}

@media (min-width: 768px) {
  .btp-section {
    padding: 100px 0;
  }
}

.btp-section-header {
  text-align: center;
  margin-bottom: 50px;
}

.btp-section-title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.btp-section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background: var(--btp-gold-gradient);
  margin: 12px auto 0;
}

.btp-section-desc {
  font-size: 1rem;
  color: var(--btp-text);
  max-width: 600px;
  margin: 0 auto;
  opacity: 0.85;
}

/* ============================================
   STAR OF THE WEEK - CAROUSEL
   ============================================ */
.btp-stars-carousel {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 20px 0;
  scrollbar-width: none;
}

.btp-stars-carousel::-webkit-scrollbar {
  display: none;
}

.btp-star-card {
  flex: 0 0 260px;
  scroll-snap-align: start;
  background: var(--btp-card-bg);
  border: 1px solid var(--btp-border-gold);
  border-radius: var(--btp-radius);
  overflow: hidden;
  transition: var(--btp-transition);
}

.btp-star-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(224, 197, 142, 0.15);
  border-color: var(--btp-secondary);
}

.btp-star-card-img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.btp-star-card-body {
  padding: 20px;
}

.btp-star-card-name {
  font-family: var(--btp-font-heading);
  font-size: 1.15rem;
  color: var(--btp-secondary);
  margin-bottom: 8px;
}

.btp-star-card-stats {
  font-size: 0.85rem;
  color: var(--btp-text);
  opacity: 0.7;
  margin-bottom: 10px;
}

.btp-star-card-popularity {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--btp-link);
}

.btp-popularity-bar {
  flex: 1;
  height: 4px;
  background: rgba(224, 197, 142, 0.2);
  border-radius: 2px;
  overflow: hidden;
}

.btp-popularity-fill {
  height: 100%;
  background: var(--btp-gold-gradient);
  border-radius: 2px;
  transition: width 1s ease;
}

/* ============================================
   VIDEO TRIAL SECTION
   ============================================ */
.btp-video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .btp-video-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .btp-video-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.btp-video-card {
  position: relative;
  border-radius: var(--btp-radius);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--btp-border-gold);
  transition: var(--btp-transition);
}

.btp-video-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(224, 197, 142, 0.15);
  border-color: var(--btp-secondary);
}

.btp-video-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.btp-video-card:hover .btp-video-thumb {
  transform: scale(1.05);
}

.btp-video-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--btp-gold-gradient);
  color: var(--btp-primary);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 3px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.btp-video-play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: rgba(224, 197, 142, 0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--btp-transition);
}

.btp-video-card:hover .btp-video-play-icon {
  opacity: 1;
}

.btp-video-play-icon::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--btp-primary);
  margin-left: 4px;
}

.btp-video-info {
  padding: 16px;
  background: var(--btp-card-bg);
}

.btp-video-title {
  font-family: var(--btp-font-heading);
  font-size: 1rem;
  color: var(--btp-secondary);
  margin-bottom: 6px;
}

.btp-video-meta {
  font-size: 0.8rem;
  color: var(--btp-text);
  opacity: 0.6;
}

/* ============================================
   MODEL RECRUITMENT
   ============================================ */
.btp-recruit {
  position: relative;
  overflow: hidden;
}

.btp-recruit-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.btp-recruit-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.btp-recruit-content p {
  font-size: 1.05rem;
  margin-bottom: 30px;
  line-height: 1.9;
}

/* ============================================
   USER VOTING
   ============================================ */
.btp-vote-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

@media (min-width: 768px) {
  .btp-vote-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .btp-vote-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.btp-vote-card {
  text-align: center;
  padding: 20px;
  background: var(--btp-card-bg);
  border: 1px solid var(--btp-border-gold);
  border-radius: var(--btp-radius);
  transition: var(--btp-transition);
}

.btp-vote-card:hover {
  border-color: var(--btp-secondary);
  box-shadow: 0 8px 25px rgba(224, 197, 142, 0.12);
}

.btp-vote-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--btp-secondary);
  margin: 0 auto 12px;
}

.btp-vote-name {
  font-family: var(--btp-font-heading);
  font-size: 0.95rem;
  color: var(--btp-secondary);
  margin-bottom: 8px;
}

.btp-vote-count {
  font-size: 0.8rem;
  color: var(--btp-text);
  opacity: 0.7;
  margin-bottom: 12px;
}

.btp-vote-btn {
  display: inline-block;
  padding: 8px 20px;
  font-size: 0.8rem;
  border: 1px solid var(--btp-secondary);
  color: var(--btp-secondary);
  border-radius: 20px;
  background: transparent;
  cursor: pointer;
  transition: var(--btp-transition);
  font-family: var(--btp-font-body);
}

.btp-vote-btn:hover {
  background: var(--btp-secondary);
  color: var(--btp-primary);
}

/* ============================================
   GRAPHIC COLUMN / ARTICLES
   ============================================ */
.btp-articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

@media (min-width: 768px) {
  .btp-articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.btp-article-card {
  background: var(--btp-card-bg);
  border: 1px solid var(--btp-border-gold);
  border-radius: var(--btp-radius);
  overflow: hidden;
  transition: var(--btp-transition);
}

.btp-article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(224, 197, 142, 0.12);
}

.btp-article-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.btp-article-body {
  padding: 24px;
}

.btp-article-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--btp-primary);
  background: var(--btp-secondary);
  padding: 3px 10px;
  border-radius: 3px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.btp-article-title {
  font-family: var(--btp-font-heading);
  font-size: 1.15rem;
  color: var(--btp-secondary);
  margin-bottom: 10px;
}

.btp-article-excerpt {
  font-size: 0.9rem;
  color: var(--btp-text);
  opacity: 0.8;
  line-height: 1.7;
}

/* ============================================
   DIAMOND MEMBERSHIP
   ============================================ */
.btp-membership {
  position: relative;
  overflow: hidden;
}

.btp-membership-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
}

.btp-membership-content {
  position: relative;
  z-index: 2;
}

.btp-perks-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .btp-perks-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .btp-perks-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.btp-perk-item {
  text-align: center;
  padding: 30px 20px;
  background: rgba(20, 20, 20, 0.7);
  border: 1px solid var(--btp-border-gold);
  border-radius: var(--btp-radius);
  transition: var(--btp-transition);
}

.btp-perk-item:hover {
  border-color: var(--btp-secondary);
  transform: translateY(-5px);
}

.btp-perk-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: block;
}

.btp-perk-title {
  font-family: var(--btp-font-heading);
  font-size: 1.05rem;
  color: var(--btp-secondary);
  margin-bottom: 8px;
}

.btp-perk-desc {
  font-size: 0.85rem;
  color: var(--btp-text);
  opacity: 0.75;
}

/* ============================================
   BRAND ADVERTISING
   ============================================ */
.btp-brand-section {
  background: linear-gradient(180deg, var(--btp-primary) 0%, rgba(30, 25, 15, 1) 50%, var(--btp-primary) 100%);
}

.btp-brand-banner {
  width: 100%;
  border-radius: var(--btp-radius);
  border: 1px solid var(--btp-border-gold);
  overflow: hidden;
}

.btp-brand-banner img {
  width: 100%;
  aspect-ratio: 21/9;
  object-fit: cover;
}

.btp-brand-text {
  text-align: center;
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--btp-text);
  opacity: 0.5;
  font-style: italic;
}

/* ============================================
   APP DOWNLOAD
   ============================================ */
.btp-app-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

@media (min-width: 768px) {
  .btp-app-section {
    flex-direction: row;
    justify-content: center;
  }
}

.btp-app-mockup {
  max-width: 280px;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(224, 197, 142, 0.15);
}

.btp-app-info {
  text-align: center;
  max-width: 500px;
}

@media (min-width: 768px) {
  .btp-app-info {
    text-align: left;
  }
}

.btp-app-info h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.btp-app-info p {
  margin-bottom: 24px;
  line-height: 1.8;
}

.btp-app-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

@media (min-width: 768px) {
  .btp-app-buttons {
    justify-content: flex-start;
  }
}

/* ============================================
   PLATFORM GUIDELINES
   ============================================ */
.btp-guidelines-list {
  max-width: 800px;
  margin: 0 auto;
}

.btp-guideline-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--btp-border-gold);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.btp-guideline-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--btp-gold-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--btp-primary);
  font-weight: 700;
  font-size: 0.85rem;
}

.btp-guideline-text h4 {
  font-family: var(--btp-font-heading);
  font-size: 1rem;
  color: var(--btp-secondary);
  margin-bottom: 4px;
}

.btp-guideline-text p {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* ============================================
   FOOTER
   ============================================ */
#btp-footer {
  background: linear-gradient(180deg, var(--btp-primary) 0%, #0a0a0a 100%);
  border-top: 1px solid var(--btp-border-gold);
  padding: 60px 0 30px;
}

.btp-footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .btp-footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.btp-footer-col h4 {
  font-family: var(--btp-font-heading);
  font-size: 1.1rem;
  color: var(--btp-secondary);
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.btp-footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--btp-gold-gradient);
}

.btp-footer-links {
  list-style: none;
}

.btp-footer-links li {
  margin-bottom: 10px;
}

.btp-footer-links a {
  font-size: 0.9rem;
  color: var(--btp-text);
  opacity: 0.7;
  transition: var(--btp-transition);
}

.btp-footer-links a:hover {
  color: var(--btp-secondary);
  opacity: 1;
}

.btp-footer-social {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}

.btp-social-icon {
  width: 40px;
  height: 40px;
  border: 1px solid var(--btp-border-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--btp-secondary);
  font-size: 0.9rem;
  transition: var(--btp-transition);
}

.btp-social-icon:hover {
  background: var(--btp-secondary);
  color: var(--btp-primary);
  border-color: var(--btp-secondary);
}

.btp-footer-email {
  font-size: 0.9rem;
  color: var(--btp-text);
  opacity: 0.7;
}

.btp-footer-bottom {
  border-top: 1px solid var(--btp-border-gold);
  padding-top: 24px;
  text-align: center;
}

.btp-footer-cert {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.btp-cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid var(--btp-border-gold);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--btp-text);
  opacity: 0.6;
}

.btp-footer-copyright {
  font-size: 0.8rem;
  color: var(--btp-text);
  opacity: 0.5;
  margin-top: 12px;
}

/* ============================================
   INNER PAGE STYLES
   ============================================ */
.btp-page-hero {
  padding: 120px 0 60px;
  text-align: center;
  background: linear-gradient(180deg, rgba(20,20,20,0.95) 0%, var(--btp-primary) 100%);
  border-bottom: 1px solid var(--btp-border-gold);
}

.btp-page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  background: var(--btp-gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.btp-page-hero p {
  font-size: 1rem;
  color: var(--btp-text);
  opacity: 0.8;
  max-width: 600px;
  margin: 0 auto;
}

/* Model Grid for inner pages */
.btp-model-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

@media (min-width: 768px) {
  .btp-model-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .btp-model-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.btp-model-card {
  background: var(--btp-card-bg);
  border: 1px solid var(--btp-border-gold);
  border-radius: var(--btp-radius);
  overflow: hidden;
  transition: var(--btp-transition);
}

.btp-model-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(224, 197, 142, 0.12);
  border-color: var(--btp-secondary);
}

.btp-model-card-img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
}

.btp-model-card-body {
  padding: 16px;
}

.btp-model-card-name {
  font-family: var(--btp-font-heading);
  font-size: 1rem;
  color: var(--btp-secondary);
  margin-bottom: 6px;
}

.btp-model-card-info {
  font-size: 0.8rem;
  color: var(--btp-text);
  opacity: 0.6;
}

/* ============================================
   CONTENT PAGE (Article Detail)
   ============================================ */
.btp-content-body {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}

.btp-content-body p {
  margin-bottom: 20px;
  font-size: 1rem;
  line-height: 2;
}

.btp-content-body h2 {
  font-size: 1.5rem;
  margin: 40px 0 16px;
}

.btp-content-body h3 {
  font-size: 1.2rem;
  margin: 30px 0 12px;
}

.btp-content-img {
  width: 100%;
  border-radius: var(--btp-radius);
  margin: 24px 0;
  border: 1px solid var(--btp-border-gold);
}

/* ============================================
   APP DOWNLOAD PAGE
   ============================================ */
.btp-app-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at center, rgba(184, 151, 62, 0.1) 0%, var(--btp-primary) 70%);
}

.btp-app-hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  padding: 40px 20px;
  text-align: center;
}

@media (min-width: 768px) {
  .btp-app-hero-content {
    flex-direction: row;
    text-align: left;
  }
}

.btp-app-phone {
  max-width: 300px;
  filter: drop-shadow(0 30px 60px rgba(224, 197, 142, 0.2));
}

.btp-app-details h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  background: var(--btp-gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.btp-app-details .btp-app-tagline {
  font-size: 1.1rem;
  color: var(--btp-text);
  margin-bottom: 30px;
  line-height: 1.8;
}

.btp-app-features {
  list-style: none;
  margin-bottom: 30px;
}

.btp-app-features li {
  padding: 8px 0;
  font-size: 0.95rem;
  color: var(--btp-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.btp-app-features li::before {
  content: '\2666';
  color: var(--btp-secondary);
  font-size: 0.7rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes btp-fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes btp-shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.btp-shimmer-text {
  background: linear-gradient(90deg, var(--btp-secondary) 0%, var(--btp-link) 25%, var(--btp-accent) 50%, var(--btp-link) 75%, var(--btp-secondary) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: btp-shimmer 4s linear infinite;
}

/* Scroll reveal */
.btp-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.btp-reveal.btp-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   18+ BADGE
   ============================================ */
.btp-age-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 2px solid #cc3333;
  border-radius: 4px;
  color: #cc3333;
  font-size: 0.75rem;
  font-weight: 700;
}

/* ============================================
   UTILITY
   ============================================ */
.btp-text-center { text-align: center; }
.btp-mt-20 { margin-top: 20px; }
.btp-mt-40 { margin-top: 40px; }
.btp-mb-20 { margin-bottom: 20px; }
.btp-mb-40 { margin-bottom: 40px; }

/* Gold Divider */
.btp-gold-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--btp-secondary) 50%, transparent 100%);
  margin: 40px 0;
  opacity: 0.3;
}