/* ============================================
   Hong Kong Cultural Heritage Guide - White Page
   Google Ads Compliant / No Branded Content
   ============================================ */

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

:root {
  --color-primary: #4e342e;
  --color-primary-dark: #3e2723;
  --color-primary-light: #6d4c41;
  --color-accent: #c9a227;
  --color-accent-light: #f0d88a;
  --color-bg: #faf9f7;
  --color-bg-alt: #f0ede6;
  --color-bg-dark: #1a1714;
  --color-text: #2d2d2d;
  --color-text-light: #6b6b6b;
  --color-text-lighter: #999;
  --color-white: #ffffff;
  --color-border: #e0ddd6;
  --color-spring: #4caf50;
  --color-summer: #ff9800;
  --color-autumn: #e65100;
  --color-winter: #1976d2;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 50px rgba(0,0,0,0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--color-primary-light); }

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn--lg { padding: 18px 40px; font-size: 1.1rem; }
.btn--full { width: 100%; }

/* Section Labels & Titles */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-primary);
  background: rgba(78, 52, 46, 0.08);
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
}
.section-label--light {
  color: var(--color-accent-light);
  background: rgba(255,255,255,0.1);
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 680px;
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

/* ========== NAVIGATION ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition);
}
.nav--scrolled {
  box-shadow: var(--shadow-sm);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
}
.nav__logo-icon {
  font-size: 1.8rem;
}
.nav__logo-text {
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.2;
  color: var(--color-primary-dark);
}
.nav__logo-text small {
  font-weight: 400;
  font-size: 0.75rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-light);
  transition: color var(--transition);
  text-decoration: none;
}
.nav__link:hover { color: var(--color-primary); }
.nav__link--cta {
  background: var(--color-primary);
  color: var(--color-white) !important;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
}
.nav__link--cta:hover {
  background: var(--color-primary-dark);
  color: var(--color-white) !important;
}
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  margin-top: 72px;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,23,20,0.88) 0%, rgba(78,52,46,0.65) 50%, rgba(26,23,20,0.75) 100%);
  z-index: 1;
}
.hero__content {
  position: relative;
  z-index: 2;
  padding: 80px 0;
  max-width: 720px;
}
.hero__tag {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  color: var(--color-accent-light);
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}
.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: 20px;
}
.hero__title span {
  display: block;
  color: var(--color-accent-light);
}
.hero__subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
  margin-bottom: 28px;
}
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
}
.hero__meta-item {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  font-weight: 500;
}

/* ========== INTRO ========== */
.intro {
  padding: 100px 0;
  background: var(--color-white);
}
.intro__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  align-items: center;
}
.intro__text .section-title {
  text-align: left;
}
.intro__text p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-size: 1.05rem;
}
.intro__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.stat-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.stat-card__number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}
.stat-card__label {
  font-size: 0.82rem;
  color: var(--color-text-light);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ========== ARTICLES ========== */
.articles {
  padding: 100px 0;
  background: var(--color-bg);
}
.article-card {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 40px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-border);
}
.article-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.article-card--reverse {
  grid-template-columns: 1.3fr 1fr;
}
.article-card--reverse .article-card__image {
  order: 2;
}
.article-card--reverse .article-card__body {
  order: 1;
}
.article-card__image {
  position: relative;
  min-height: 320px;
  overflow: hidden;
}
.article-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.article-card:hover .article-card__image img {
  transform: scale(1.05);
}
.article-card__category {
  position: absolute;
  top: 20px;
  left: 20px;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.article-card__body {
  padding: 36px 36px 36px 0;
  display: flex;
  flex-direction: column;
}
.article-card--reverse .article-card__body {
  padding: 36px 0 36px 36px;
}
.article-card__meta {
  display: flex;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--color-text-lighter);
  margin-bottom: 12px;
}
.article-card__title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.3;
}
.article-card__excerpt {
  color: var(--color-text-light);
  font-size: 0.98rem;
  margin-bottom: 16px;
  line-height: 1.7;
}
.article-card__content {
  display: none;
  margin-bottom: 16px;
}
.article-card__content.is-visible {
  display: block;
  animation: fadeIn 0.4s ease;
}
.article-card__content p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 14px;
  line-height: 1.75;
}
.article-card__content p strong {
  color: var(--color-text);
}
.article-card__toggle {
  background: none;
  border: none;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  padding: 0;
  text-align: left;
  transition: color var(--transition);
  margin-top: auto;
  font-family: var(--font-body);
}
.article-card__toggle:hover {
  color: var(--color-primary-dark);
}

/* ========== VISITOR TIPS ========== */
.tips-section {
  padding: 100px 0;
  background: var(--color-white);
}
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tip-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.tip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}
.tip-card__icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.tip-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}
.tip-card__text {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ========== SEASONAL GUIDE ========== */
.seasonal {
  padding: 100px 0;
  background: var(--color-bg);
}
.seasonal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.season-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.season-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.season-card__header {
  padding: 28px 24px;
  text-align: center;
}
.season-card--spring .season-card__header { background: linear-gradient(135deg, #e8f5e9, #c8e6c9); }
.season-card--summer .season-card__header { background: linear-gradient(135deg, #fff3e0, #ffe0b2); }
.season-card--autumn .season-card__header { background: linear-gradient(135deg, #fbe9e7, #ffccbc); }
.season-card--winter .season-card__header { background: linear-gradient(135deg, #e3f2fd, #bbdefb); }
.season-card__icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 10px;
}
.season-card__title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}
.season-card__months {
  font-size: 0.82rem;
  color: var(--color-text-light);
  font-weight: 500;
}
.season-card__list {
  padding: 24px;
  list-style: none;
}
.season-card__list li {
  padding: 10px 0;
  font-size: 0.9rem;
  color: var(--color-text-light);
  border-bottom: 1px solid var(--color-border);
  padding-left: 20px;
  position: relative;
}
.season-card__list li:last-child { border-bottom: none; }
.season-card__list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.8rem;
}

/* ========== NEWSLETTER / LEAD FORM ========== */
.newsletter {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}
.newsletter__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.newsletter__title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
  line-height: 1.2;
}
.newsletter__text {
  color: rgba(255,255,255,0.8);
  font-size: 1.05rem;
  margin-bottom: 24px;
  line-height: 1.7;
}
.newsletter__benefits {
  list-style: none;
}
.newsletter__benefits li {
  color: rgba(255,255,255,0.85);
  padding: 8px 0;
  font-size: 0.95rem;
}

/* Lead Form */
.lead-form {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-xl);
}
.lead-form__title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 24px;
  text-align: center;
}
.lead-form__group {
  margin-bottom: 18px;
}
.lead-form__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}
.lead-form__input {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: all var(--transition);
  outline: none;
}
.lead-form__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,92,58,0.1);
}
.lead-form__input::placeholder {
  color: var(--color-text-lighter);
}
.lead-form__consent {
  margin: 20px 0;
}
.lead-form__checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--color-text-light);
  cursor: pointer;
  line-height: 1.5;
}
.lead-form__checkbox-label input[type="checkbox"] {
  margin-top: 3px;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
}
.lead-form__checkbox-label a {
  color: var(--color-primary);
  text-decoration: underline;
}
.lead-form__note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-lighter);
  margin-top: 14px;
}
.lead-form__success {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  box-shadow: var(--shadow-xl);
}
.lead-form__success-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
}
.lead-form__success h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.lead-form__success p {
  color: var(--color-text-light);
  font-size: 1rem;
}

/* ========== FAQ ========== */
.faq {
  padding: 100px 0;
  background: var(--color-white);
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: color var(--transition);
}
.faq-item__question:hover {
  color: var(--color-primary);
}
.faq-item__icon {
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-primary);
  transition: transform var(--transition);
  flex-shrink: 0;
  width: 28px;
  text-align: center;
}
.faq-item.is-open .faq-item__icon {
  transform: rotate(45deg);
}
.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.is-open .faq-item__answer {
  max-height: 300px;
  padding-bottom: 22px;
}
.faq-item__answer p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== FOOTER ========== */
.footer {
  background: var(--color-bg-dark);
  padding: 80px 0 40px;
  color: rgba(255,255,255,0.7);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}
.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-white);
  margin-bottom: 16px;
}
.footer__desc {
  font-size: 0.9rem;
  line-height: 1.7;
}
.footer__title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.footer__links {
  list-style: none;
}
.footer__links li {
  margin-bottom: 10px;
}
.footer__links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--color-white); }
.footer__note {
  font-size: 0.82rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.5);
}
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 30px;
  text-align: center;
}
.footer__bottom p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 6px;
}
.footer__disclaimer {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.3);
  font-style: italic;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .intro__grid { grid-template-columns: 1fr; gap: 40px; }
  .intro__stats { grid-template-columns: repeat(4, 1fr); }
  .article-card { grid-template-columns: 1fr; }
  .article-card--reverse { grid-template-columns: 1fr; }
  .article-card--reverse .article-card__image { order: 0; }
  .article-card--reverse .article-card__body { order: 0; }
  .article-card__body { padding: 28px !important; }
  .article-card__image { min-height: 240px; }
  .seasonal-grid { grid-template-columns: repeat(2, 1fr); }
  .newsletter__inner { grid-template-columns: 1fr; gap: 40px; }
  .footer__grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    gap: 16px;
  }
  .nav__links.is-open { display: flex; }
  .nav__toggle { display: flex; }
  .nav__link--cta {
    text-align: center;
    width: 100%;
    display: block;
  }
  .hero { min-height: 75vh; }
  .hero__title { font-size: clamp(1.8rem, 6vw, 2.6rem); }
  .hero__meta { gap: 12px; }
  .intro__stats { grid-template-columns: repeat(2, 1fr); }
  .tips-grid { grid-template-columns: 1fr; }
  .seasonal-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .faq-item__question { font-size: 0.95rem; }
  .lead-form { padding: 28px 24px; }
  .section-title { font-size: clamp(1.6rem, 5vw, 2.4rem); }
  .articles,
  .tips-section,
  .seasonal,
  .newsletter,
  .faq,
  .intro { padding: 60px 0; }
}

@media (max-width: 480px) {
  .hero__meta { flex-direction: column; gap: 6px; }
  .intro__stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 20px 16px; }
  .stat-card__number { font-size: 1.6rem; }
}