/* ============================================
   Horizon Urban 厚片吐司小包 — Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+TC:wght@300;400;500;700;900&display=swap');

/* --- CSS Custom Properties --- */
:root {
  --clr-primary: #1a1a2e;
  --clr-secondary: #16213e;
  --clr-accent: #e67e22;
  --clr-accent-hover: #d35400;
  --clr-accent-light: #fdebd0;
  --clr-surface: #faf8f5;
  --clr-surface-alt: #f0ebe3;
  --clr-card: rgba(255,255,255,0.92);
  --clr-glass: rgba(255,255,255,0.08);
  --clr-glass-border: rgba(255,255,255,0.15);
  --clr-text: #2d2d2d;
  --clr-text-light: #f5f0e8;
  --clr-text-muted: #7a7a8c;
  --clr-gold: #d4a574;
  --clr-dark-overlay: rgba(15,15,35,0.55);

  --ff-heading: 'Noto Sans TC', 'Inter', sans-serif;
  --ff-body: 'Inter', 'Noto Sans TC', sans-serif;

  --fs-hero: clamp(2.2rem, 5vw, 4rem);
  --fs-h1: clamp(1.8rem, 4vw, 3rem);
  --fs-h2: clamp(1.4rem, 3vw, 2.2rem);
  --fs-h3: clamp(1.1rem, 2vw, 1.5rem);
  --fs-body: clamp(0.95rem, 1.2vw, 1.1rem);
  --fs-small: 0.875rem;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.1);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
  --shadow-glow: 0 0 40px rgba(230,126,34,0.2);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  --container-max: 1200px;
  --container-narrow: 900px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  color: var(--clr-text);
  background: var(--clr-surface);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(26,26,46,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 10px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.2);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar__logo img {
  height: 36px;
  width: auto;
  border-radius: 4px;
}

.navbar__logo span {
  font-family: var(--ff-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--clr-text-light);
  letter-spacing: 0.5px;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.navbar__links a {
  color: var(--clr-text-light);
  font-size: var(--fs-small);
  font-weight: 500;
  opacity: 0.85;
  transition: var(--transition);
  position: relative;
}

.navbar__links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--clr-accent);
  transition: var(--transition);
}

.navbar__links a:hover { opacity: 1; }
.navbar__links a:hover::after,
.navbar__links a.active::after { width: 100%; }

.navbar__cta {
  background: var(--clr-accent) !important;
  color: #fff !important;
  padding: 8px 20px !important;
  border-radius: 50px !important;
  font-weight: 600 !important;
  opacity: 1 !important;
  transition: var(--transition) !important;
}

.navbar__cta:hover {
  background: var(--clr-accent-hover) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.navbar__cta::after { display: none !important; }

/* Mobile Menu */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.navbar__toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--clr-text-light);
  transition: var(--transition);
  border-radius: 2px;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero--short { min-height: 70vh; }

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(15,15,35,0.7) 0%,
    rgba(26,26,46,0.5) 50%,
    rgba(15,15,35,0.65) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--clr-text-light);
  max-width: 800px;
  padding: 0 24px;
}

.hero__badge {
  display: inline-block;
  background: rgba(230,126,34,0.2);
  border: 1px solid rgba(230,126,34,0.4);
  color: var(--clr-accent);
  padding: 6px 20px;
  border-radius: 50px;
  font-size: var(--fs-small);
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 1px;
  backdrop-filter: blur(10px);
}

.hero__title {
  font-family: var(--ff-heading);
  font-size: var(--fs-hero);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  text-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.hero__subtitle {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  opacity: 0.9;
  margin-bottom: 36px;
  line-height: 1.8;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border-radius: 50px;
  font-family: var(--ff-heading);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
}

.btn--primary {
  background: linear-gradient(135deg, var(--clr-accent), #f39c12);
  color: #fff;
  box-shadow: 0 4px 20px rgba(230,126,34,0.3);
}

.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(230,126,34,0.45);
}

.btn--outline {
  background: transparent;
  color: var(--clr-text-light);
  border: 2px solid rgba(255,255,255,0.4);
}

.btn--outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
  transform: translateY(-2px);
}

.btn--dark {
  background: var(--clr-primary);
  color: var(--clr-text-light);
}

.btn--dark:hover {
  background: var(--clr-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.hero__buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Section --- */
.section {
  padding: 100px 0;
}

.section--dark {
  background: var(--clr-primary);
  color: var(--clr-text-light);
}

.section--alt {
  background: var(--clr-surface-alt);
}

.section__header {
  text-align: center;
  margin-bottom: 60px;
}

.section__label {
  display: inline-block;
  color: var(--clr-accent);
  font-weight: 600;
  font-size: var(--fs-small);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section__title {
  font-family: var(--ff-heading);
  font-size: var(--fs-h2);
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}

.section--dark .section__title { color: var(--clr-text-light); }

.section__desc {
  color: var(--clr-text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

.section--dark .section__desc { color: rgba(255,255,255,0.7); }

/* --- Feature Cards --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--clr-card);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid rgba(0,0,0,0.04);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.feature-card__icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  background: var(--clr-accent-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.feature-card__title {
  font-family: var(--ff-heading);
  font-size: var(--fs-h3);
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card__text {
  color: var(--clr-text-muted);
  font-size: var(--fs-small);
  line-height: 1.7;
}

/* --- Glass Cards (dark sections) --- */
.glass-card {
  background: var(--clr-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--clr-glass-border);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: var(--transition);
}

.glass-card:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-4px);
}

/* --- Image Showcase --- */
.showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.showcase--reverse { direction: rtl; }
.showcase--reverse > * { direction: ltr; }

.showcase__img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.showcase__img img {
  width: 100%;
  transition: var(--transition-slow);
}

.showcase__img:hover img {
  transform: scale(1.03);
}

.showcase__content {
  padding: 20px 0;
}

.showcase__title {
  font-family: var(--ff-heading);
  font-size: var(--fs-h2);
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}

.showcase__text {
  color: var(--clr-text-muted);
  margin-bottom: 28px;
  line-height: 1.8;
}

/* --- Gallery Grid --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
  aspect-ratio: 3/4;
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 50%);
  opacity: 0;
  transition: var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 20px;
}

.gallery-item:hover .gallery-item__overlay { opacity: 1; }

.gallery-item__caption {
  color: #fff;
  font-family: var(--ff-heading);
  font-weight: 600;
  font-size: var(--fs-small);
}

/* --- Video Embed --- */
.video-section {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 16/9;
  max-width: 900px;
  margin: 0 auto;
}

.video-section iframe,
.video-section video {
  width: 100%; height: 100%;
  border: none;
  object-fit: cover;
}

/* --- Topic Cards (sub-page navigation) --- */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.topic-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/5;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.topic-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.topic-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.topic-card:hover img { transform: scale(1.06); }

.topic-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,15,35,0.85) 0%, rgba(15,15,35,0.2) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  transition: var(--transition);
}

.topic-card__label {
  color: var(--clr-accent);
  font-size: var(--fs-small);
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.topic-card__title {
  color: #fff;
  font-family: var(--ff-heading);
  font-size: var(--fs-h3);
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.topic-card__text {
  color: rgba(255,255,255,0.7);
  font-size: var(--fs-small);
  line-height: 1.6;
}

.topic-card__arrow {
  position: absolute;
  top: 20px; right: 20px;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  transition: var(--transition);
}

.topic-card:hover .topic-card__arrow {
  background: var(--clr-accent);
}

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-secondary) 100%);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  color: var(--clr-text-light);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: rgba(230,126,34,0.08);
  pointer-events: none;
}

.cta-banner__title {
  font-family: var(--ff-heading);
  font-size: var(--fs-h2);
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-banner__text {
  color: rgba(255,255,255,0.7);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Testimonials --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--clr-card);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0,0,0,0.04);
}

.testimonial-card__stars {
  color: var(--clr-accent);
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.testimonial-card__text {
  color: var(--clr-text);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-card__avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--clr-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--clr-accent);
}

.testimonial-card__name {
  font-weight: 600;
  font-size: var(--fs-small);
}

.testimonial-card__role {
  color: var(--clr-text-muted);
  font-size: 0.8rem;
}

/* --- Story Flow (Explore page) --- */
.story-flow {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.story-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.story-item:nth-child(even) { direction: rtl; }
.story-item:nth-child(even) > * { direction: ltr; }

.story-item__img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/5;
}

.story-item__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.story-item__img:hover img { transform: scale(1.04); }

.story-item__number {
  font-family: var(--ff-heading);
  font-size: 4rem;
  font-weight: 900;
  color: var(--clr-accent);
  opacity: 0.2;
  line-height: 1;
  margin-bottom: 12px;
}

.story-item__title {
  font-family: var(--ff-heading);
  font-size: var(--fs-h3);
  font-weight: 700;
  margin-bottom: 16px;
}

.story-item__text {
  color: var(--clr-text-muted);
  line-height: 1.8;
}

/* --- Function Detail (Function page) --- */
.func-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.func-card {
  background: var(--clr-card);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0,0,0,0.04);
  transition: var(--transition);
}

.func-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.func-card__icon {
  flex-shrink: 0;
  width: 56px; height: 56px;
  border-radius: var(--radius-sm);
  background: var(--clr-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.func-card__title {
  font-family: var(--ff-heading);
  font-weight: 700;
  margin-bottom: 8px;
}

.func-card__text {
  color: var(--clr-text-muted);
  font-size: var(--fs-small);
  line-height: 1.7;
}

/* --- Footer --- */
.footer {
  background: var(--clr-primary);
  color: var(--clr-text-light);
  padding: 60px 0 30px;
}

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer__brand p {
  color: rgba(255,255,255,0.6);
  font-size: var(--fs-small);
  line-height: 1.7;
  margin-top: 12px;
  max-width: 350px;
}

.footer__heading {
  font-family: var(--ff-heading);
  font-weight: 600;
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer__links a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: var(--fs-small);
  padding: 4px 0;
  transition: var(--transition);
}

.footer__links a:hover { color: var(--clr-accent); }

.footer__bottom {
  text-align: center;
  color: rgba(255,255,255,0.4);
  font-size: var(--fs-small);
}

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

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 968px) {
  .showcase,
  .story-item { grid-template-columns: 1fr; gap: 32px; }
  .showcase--reverse,
  .story-item:nth-child(even) { direction: ltr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .topic-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .func-grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .navbar__links { 
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(26,26,46,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    padding: 40px;
  }
  .navbar__links.open { display: flex; }
  .navbar__links a { font-size: 1.2rem; text-align: center; }
  .navbar__toggle { display: flex; z-index: 1001; }
  .section { padding: 60px 0; }
  .hero { min-height: 85vh; }
  .hero--short { min-height: 55vh; }
  .gallery-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .cta-banner { padding: 40px 24px; }
}