/* =============================================
   台灣唸歌文化協會 - Global Styles
   ============================================= */
:root {
  --clr-primary: #7a4f1e;
  --clr-primary-lt: #b8832b;
  --clr-gold: #c9962a;
  --clr-gold-lt: #e8c06a;
  --clr-dark: #1a0f05;
  --clr-bg: #fdf8f1;
  --clr-bg-alt: #f5ede0;
  --clr-text: #3a2210;
  --clr-muted: #7a6555;
  --clr-white: #ffffff;
  --clr-card: #fffcf7;
  --shadow-sm: 0 2px 12px rgba(120, 80, 30, 0.08);
  --shadow-md: 0 6px 30px rgba(120, 80, 30, 0.14);
  --shadow-lg: 0 16px 56px rgba(120, 80, 30, 0.18);
  --radius: 16px;
  --radius-sm: 8px;
  --font-serif: 'Huninn', 'Noto Serif TC', 'Georgia', serif;
  --font-sans: 'Huninn', 'Noto Sans TC', 'Arial', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

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

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

ul {
  list-style: none;
}

/* =============================================
   HEADER
   ============================================= */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(253, 248, 241, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(201, 150, 42, 0.18);
  transition: box-shadow var(--transition);
}

#site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.huninn-regular {
  font-family: "Huninn", sans-serif;
  font-weight: 400;
  font-style: normal;
}


.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 150px;
  width: auto;
  object-fit: contain;
}

#main-nav ul {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav-link {
  font-family: var(--font-serif);
  font-size: 1.26rem;
  font-weight: 500;
  color: var(--clr-primary);
  padding: 6px 14px;
  border-radius: 20px;
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover,
.nav-link.active {
  background: var(--clr-gold);
  color: var(--clr-white);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* =============================================
   HERO
   ============================================= */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #2a1505 0%, #5c3311 40%, #8a5a20 100%);
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23c9962a' fill-opacity='0.06'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 120px 24px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.hero-logo {
  width: 280px;
  max-width: 80vw;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  background: white;
  padding: 16px;
  animation: fadeUp 0.9s ease both;
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 3vw, 1.35rem);
  color: var(--clr-gold-lt);
  letter-spacing: 0.08em;
  animation: fadeUp 0.9s 0.2s ease both;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeUp 0.9s 0.35s ease both;
}

.btn-primary,
.btn-outline {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 40px;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid var(--clr-gold);
}

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

.btn-primary:hover {
  background: var(--clr-gold-lt);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 150, 42, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--clr-gold-lt);
}

.btn-outline:hover {
  background: rgba(201, 150, 42, 0.12);
  transform: translateY(-2px);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 0;
  right: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 1.2rem;
  letter-spacing: 0.15em;
  text-indent: 0.15em;
  animation: fadeUp 1s 0.8s ease both;
}

.scroll-arrow {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(201, 150, 42, 0.7), transparent);
  animation: scrollPulse 1.8s ease-in-out infinite;
}

/* =============================================
   SECTIONS - Shared
   ============================================= */
.section {
  padding: 100px 0;
  scroll-margin-top: 100px;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 28px;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-gold);
  background: rgba(201, 150, 42, 0.1);
  border: 1px solid rgba(201, 150, 42, 0.3);
  padding: 4px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: 14px;
  line-height: 1.3;
}

.section-desc {
  color: var(--clr-muted);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto;
}

/* =============================================
   SECTION 1: 關於協會 - President Speech
   ============================================= */
.president-speech-card {
  background: var(--clr-card);
  border: 1px solid rgba(201, 150, 42, 0.2);
  border-radius: var(--radius);
  padding: 48px 56px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  max-width: 820px;
  margin: 0 auto;
}

.speech-deco {
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(to bottom, var(--clr-gold), var(--clr-primary));
}

.speech-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(201, 150, 42, 0.15);
}

.speech-icon {
  font-size: 2.2rem;
  background: linear-gradient(135deg, var(--clr-gold-lt), var(--clr-gold));
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.speech-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-primary);
}

.speech-subtitle {
  font-size: 0.9rem;
  color: var(--clr-gold);
  font-style: italic;
  margin-top: 4px;
}

.speech-body p {
  margin-bottom: 18px;
  line-height: 1.9;
  color: var(--clr-text);
}

.speech-signature {
  text-align: right;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid rgba(201, 150, 42, 0.15);
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--clr-primary);
}

/* =============================================
   SECTION 2: 認識唸歌文化 - Articles
   ============================================= */
.article-grid {
  display: grid;
  gap: 28px;
}

.article-card {
  background: var(--clr-card);
  border: 1px solid rgba(201, 150, 42, 0.18);
  border-radius: var(--radius);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.article-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.article-card.featured {
  border-left: 4px solid var(--clr-gold);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.article-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--clr-gold);
  background: rgba(201, 150, 42, 0.1);
  padding: 3px 12px;
  border-radius: 12px;
}

.article-date {
  font-size: 0.82rem;
  color: var(--clr-muted);
}

.article-card-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: 14px;
  line-height: 1.5;
}

.article-excerpt p {
  color: var(--clr-muted);
  margin-bottom: 20px;
}

.read-more-btn {
  background: none;
  border: 1px solid var(--clr-gold);
  color: var(--clr-gold);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.read-more-btn:hover {
  background: var(--clr-gold);
  color: var(--clr-white);
}

.article-full {
  display: none;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px dashed rgba(201, 150, 42, 0.25);
  animation: fadeUp 0.4s ease;
}

.article-full.open {
  display: block;
}

.article-full h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin: 24px 0 10px;
}

.article-full h4:first-child {
  margin-top: 0;
}

.article-full p {
  color: var(--clr-text);
  margin-bottom: 14px;
  line-height: 1.85;
}

.article-full ul {
  list-style: none;
  margin: 12px 0 18px 0;
}

.article-full ul li {
  padding: 8px 0 8px 24px;
  position: relative;
  color: var(--clr-text);
  border-bottom: 1px solid rgba(201, 150, 42, 0.08);
}

.article-full ul li::before {
  content: '🎵';
  position: absolute;
  left: 0;
  font-size: 0.85rem;
}

/* =============================================
   SECTION 3: 資源 - Resources
   ============================================= */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.resource-category {
  background: var(--clr-card);
  border: 1px solid rgba(201, 150, 42, 0.18);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.resource-category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  background: linear-gradient(135deg, rgba(201, 150, 42, 0.1), rgba(122, 79, 30, 0.06));
  border-bottom: 1px solid rgba(201, 150, 42, 0.15);
}

.resource-icon {
  font-size: 1.5rem;
}

.resource-category-header h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-primary);
}

.resource-list {
  padding: 8px 0;
}

.resource-item {
  border-bottom: 1px solid rgba(201, 150, 42, 0.08);
}

.resource-item:last-child {
  border-bottom: none;
}

.resource-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 24px;
  transition: background var(--transition);
}

a.resource-link:hover {
  background: rgba(201, 150, 42, 0.06);
}

.resource-link.static {
  cursor: default;
}

.resource-name {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--clr-primary);
}

a.resource-link .resource-name {
  color: var(--clr-primary-lt);
}

a.resource-link:hover .resource-name {
  text-decoration: underline;
}

.resource-desc {
  font-size: 0.8rem;
  color: var(--clr-muted);
}

/* =============================================
   SECTION 4: 近期活動 - Events
   ============================================= */
.events-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.event-card {
  display: flex;
  gap: 28px;
  background: var(--clr-card);
  border: 1px solid rgba(201, 150, 42, 0.18);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  align-items: flex-start;
}

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

.event-date-block {
  flex-shrink: 0;
  width: 72px;
  text-align: center;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-gold));
  color: white;
  border-radius: 12px;
  padding: 10px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.event-date-block.placeholder-date {
  background: linear-gradient(135deg, #999, #bbb);
}

.event-month {
  font-size: 0.7rem;
  font-weight: 600;
  opacity: 0.85;
}

.event-day {
  font-size: 1.9rem;
  font-weight: 900;
  line-height: 1;
}

.event-year {
  font-size: 0.65rem;
  opacity: 0.75;
}

.event-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 12px;
  background: rgba(100, 100, 100, 0.1);
  color: var(--clr-muted);
  margin-bottom: 10px;
}

.upcoming-badge {
  background: rgba(201, 150, 42, 0.15);
  color: var(--clr-gold);
}

.event-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: 8px;
  line-height: 1.5;
}

.event-detail {
  font-size: 0.82rem;
  color: var(--clr-gold);
  margin-bottom: 10px;
}

.event-desc {
  font-size: 0.9rem;
  color: var(--clr-muted);
  line-height: 1.7;
}

/* =============================================
   SECTION 5: 會員作品 - Works
   ============================================= */
.works-grid {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.video-card {
  background: var(--clr-card);
  border: 1px solid rgba(201,150,42,0.18);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.video-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.video-card iframe {
  border-radius: 8px;
  display: block;
  max-width: 100%;
}

/* =============================================
   SECTION 6: 社群 - Social Links
   ============================================= */
.social-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.social-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--clr-card);
  border: 1px solid rgba(201, 150, 42, 0.18);
  border-radius: var(--radius);
  padding: 28px 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  cursor: pointer;
}

.social-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.social-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: white;
}

.social-icon-wrap.facebook {
  background: #1877F2;
}

.social-icon-wrap.youtube {
  background: #FF0000;
}

.social-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
}

.social-platform {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-muted);
}

.social-handle {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-primary);
}

.social-desc {
  font-size: 0.8rem;
  color: var(--clr-muted);
  line-height: 1.5;
}

.social-arrow {
  font-size: 1.2rem;
  color: var(--clr-gold);
  transition: transform var(--transition);
}

.social-card:hover .social-arrow {
  transform: translateX(4px);
}

/* =============================================
   FOOTER
   ============================================= */
#site-footer {
  background: var(--clr-dark);
  padding: 56px 0 32px;
  border-top: 3px solid var(--clr-gold);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 28px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 40px;
  align-items: center;
}

.footer-logo-img {
  height: 80px;
  width: auto;
  object-fit: contain;
  background: white;
  border-radius: 12px;
  padding: 8px;
}

.footer-name {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-gold-lt);
}

.footer-name-roman {
  font-size: 0.8rem;
  color: rgba(232, 192, 106, 0.65);
  margin-top: 4px;
  font-style: italic;
}

.footer-copy {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.35);
  margin-top: 12px;
}

.footer-email {
  font-size: 0.78rem;
  margin-top: 6px;
}

.footer-email a {
  color: rgba(232, 192, 106, 0.6);
  transition: color var(--transition);
}

.footer-email a:hover {
  color: var(--clr-gold-lt);
  text-decoration: underline;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: right;
}

.footer-nav a {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--clr-gold-lt);
}

/* =============================================
   ANIMATIONS
   ============================================= */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollPulse {

  0%,
  100% {
    opacity: 0.4;
    height: 40px;
  }

  50% {
    opacity: 1;
    height: 56px;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
  .header-inner {
    gap: 12px;
  }

  #main-nav {
    display: none;
    position: absolute;
    top: 100px;
    left: 0;
    right: 0;
    background: rgba(253, 248, 241, 0.98);
    backdrop-filter: blur(14px);
    padding: 20px 24px;
    border-bottom: 1px solid rgba(201, 150, 42, 0.2);
    box-shadow: var(--shadow-md);
  }

  #main-nav.open {
    display: block;
  }

  #main-nav ul {
    flex-direction: column;
    gap: 4px;
  }

  .nav-link {
    display: block;
    padding: 10px 16px;
    font-size: 2.5rem;
  }

  .menu-toggle {
    display: flex;
  }

  .president-speech-card {
    padding: 28px 24px;
  }

  .speech-deco {
    width: 4px;
  }

  .event-card {
    flex-direction: column;
    gap: 16px;
  }

  .event-date-block {
    width: 100%;
    flex-direction: row;
    justify-content: center;
    gap: 8px;
    align-items: center;
    padding: 10px 16px;
  }

  .event-day {
    font-size: 1.4rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 24px;
  }

  .footer-logo {
    display: flex;
    justify-content: center;
  }

  .footer-nav {
    text-align: center;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 70px 0;
  }

  .president-speech-card {
    padding: 24px 18px;
  }

  .article-card {
    padding: 24px 20px;
  }
}