/* ==========================================================================
   玖發 (JiuFa) Landing Page — Base Styles
   ========================================================================== */

:root {
  --color-blue: #159BD7;
  --color-teal: #16B8B0;
  --color-coral: #FF7048;
  --color-white: #FFFFFF;
  --color-navy: #102A43;
  --color-gold: #E5B84B;

  --color-bg: #F6FAFC;
  --color-text: var(--color-navy);
  --color-text-soft: #486581;

  --radius-md: 14px;
  --radius-lg: 24px;

  --shadow-sm: 0 2px 8px rgba(16, 42, 67, 0.08);
  --shadow-md: 0 12px 32px rgba(16, 42, 67, 0.12);

  --header-height: 72px;
  --transition-fast: 0.2s ease;
  --transition-med: 0.35s ease;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, h3 {
  color: var(--color-navy);
  line-height: 1.3;
  margin: 0;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
}

.section-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 72px 24px;
}

.section-inner.narrow {
  max-width: 760px;
}

.section-inner h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  text-align: center;
  margin-bottom: 40px;
}

/* Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  border: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-blue), var(--color-teal));
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn-outline:hover {
  background: var(--color-navy);
  color: var(--color-white);
}

/* Header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--transition-med), box-shadow var(--transition-med);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  width: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: 0.05em;
}

.main-nav ul {
  display: flex;
  gap: 32px;
}

.main-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-navy);
  position: relative;
  padding: 8px 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-coral);
  transition: width var(--transition-fast);
}

.main-nav a:hover::after {
  width: 100%;
}

.header-cta {
  padding: 10px 22px;
  font-size: 0.9rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-navy);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* Hero
   ========================================================================== */

.hero {
  padding-top: 32px;
  background:
    radial-gradient(circle at 85% 20%, rgba(21, 155, 215, 0.16), transparent 55%),
    radial-gradient(circle at 15% 80%, rgba(22, 184, 176, 0.16), transparent 55%),
    var(--color-bg);
}

.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 56px 24px 88px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  gap: 48px;
}

.eyebrow {
  display: inline-block;
  color: var(--color-teal);
  background: rgba(22, 184, 176, 0.12);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero-text h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--color-text-soft);
  margin-bottom: 32px;
  max-width: 44ch;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-media {
  display: flex;
  justify-content: center;
}

.hero-image {
  width: 100%;
  max-width: 480px;
  height: auto;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(21, 155, 215, 0.14), rgba(255, 112, 72, 0.12));
  object-fit: contain;
}

/* Entertainment cards
   ========================================================================== */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.content-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.content-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto 24px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-white);
  border: 4px solid var(--color-white);
  box-shadow: 0 10px 30px rgba(16, 42, 67, 0.12);
}

.card-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 767px) {
  .card-icon {
    width: 96px;
    height: 96px;
  }
}

.content-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.content-card p {
  color: var(--color-text-soft);
  font-size: 0.95rem;
}

/* Features
   ========================================================================== */

.features {
  background: var(--color-white);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-item {
  padding: 28px 20px;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  text-align: center;
}

.feature-item h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--color-blue);
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--color-text-soft);
}

/* About
   ========================================================================== */

.about {
  text-align: center;
}

.about p {
  font-size: 1.1rem;
  color: var(--color-text-soft);
}

/* FAQ / Accordion
   ========================================================================== */

.faq {
  background: var(--color-white);
}

.accordion-item {
  border-bottom: 1px solid rgba(16, 42, 67, 0.1);
}

.accordion-item h3 {
  margin: 0;
}

.accordion-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 22px 4px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-navy);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-trigger::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--color-coral);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-left: 16px;
}

.accordion-trigger[aria-expanded="true"]::after {
  transform: rotate(45deg);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-med);
}

.accordion-panel p {
  padding: 0 4px 22px;
  color: var(--color-text-soft);
}

/* Contact
   ========================================================================== */

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.contact-list li {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  border-bottom: 1px dashed rgba(16, 42, 67, 0.12);
  padding-bottom: 12px;
}

.contact-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.contact-label {
  min-width: 96px;
  font-weight: 700;
  color: var(--color-blue);
}

.contact-value {
  color: var(--color-text-soft);
}

.contact-note {
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--color-text-soft);
  text-align: center;
}

/* Footer
   ========================================================================== */

.site-footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.85);
  padding: 56px 24px 24px;
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand .logo {
  color: var(--color-white);
  margin-bottom: 8px;
}

.footer-desc {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  max-width: 32ch;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
}

.footer-links a:hover {
  color: var(--color-gold);
}

.copyright {
  max-width: 1120px;
  margin: 24px auto 0;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-med);
  }

  .main-nav.open {
    max-height: 400px;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 16px 24px;
    gap: 4px;
  }

  .main-nav a {
    display: block;
    padding: 14px 0;
  }

  .nav-toggle {
    display: flex;
  }

  .header-cta {
    display: none;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding-bottom: 56px;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-media {
    order: -1;
  }

  .hero-image {
    max-width: 320px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .section-inner {
    padding: 56px 20px;
  }

  .btn {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }
}