/**
 * 87x.uk 模組化展示組件樣式表
 * 涵蓋 Header / Hero / About / Skills / Experience / Portfolio / Contact / Footer
 */

/* ==========================================================================
   1. 頂部導航 (Header & Navigation)
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}
.brand-logo .brand-badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-primary);
  background: var(--accent-subtle);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 6px 0;
}
.nav-link:hover,
.nav-link.active {
  color: var(--accent-primary);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent-primary);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 主題切換按鈕 */
.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}
.theme-toggle-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}
.theme-icon-sun,
.theme-icon-moon {
  width: 20px;
  height: 20px;
  fill: currentColor;
}
[data-theme="dark"] .theme-icon-moon { display: none; }
[data-theme="dark"] .theme-icon-sun { display: block; }
:root:not([data-theme="dark"]) .theme-icon-sun { display: none; }
:root:not([data-theme="dark"]) .theme-icon-moon { display: block; }

/* 漢堡按鈕 (手機端) */
.mobile-toggle-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
}
.mobile-toggle-btn svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
}

/* ==========================================================================
   2. 主視覺導言模組 (Hero Section)
   ========================================================================== */
.hero-section {
  padding-top: calc(var(--header-height) + 64px);
  padding-bottom: 80px;
  min-height: 85vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
}
.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--success-color);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(15, 157, 88, 0.2);
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: var(--text-primary);
}
.hero-title .highlight {
  color: var(--accent-primary);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 16px;
}
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  background: var(--card-bg);
  transition: all var(--transition-fast);
}
.social-link:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.social-link svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* 個人視覺卡片 */
.hero-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  position: relative;
}
.hero-avatar-box {
  width: 120px;
  height: 120px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-primary), #6ba5f2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 2.75rem;
  font-weight: 800;
  box-shadow: 0 8px 24px var(--accent-subtle);
}
.hero-card-name {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.hero-card-role {
  text-align: center;
  font-size: 0.95rem;
  color: var(--accent-primary);
  margin-bottom: 20px;
  font-weight: 600;
}
.hero-card-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}
.metric-item {
  text-align: center;
}
.metric-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}
.metric-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   3. 關於我模組 (About Section)
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: left;
  transition: all var(--transition-normal);
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md);
}
.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-icon-box svg {
  width: 26px;
  height: 26px;
}
.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.feature-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ==========================================================================
   4. 技能專長模組 (Skills Section)
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.skill-category-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.skill-category-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.skill-category-card h3 svg {
  width: 22px;
  height: 22px;
  color: var(--accent-primary);
}

.skill-item {
  margin-bottom: 20px;
}
.skill-item:last-child {
  margin-bottom: 0;
}
.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.95rem;
  font-weight: 600;
}
.skill-bar-bg {
  width: 100%;
  height: 8px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.skill-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), #6ba5f2);
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

.tags-cluster {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.skill-tag {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}
.skill-tag:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-1px);
}

/* ==========================================================================
   5. 經歷時間軸模組 (Experience Section)
   ========================================================================== */
.timeline-container {
  max-width: 820px;
  margin: 0 auto;
  position: relative;
  padding-left: 36px;
}
.timeline-container::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 11px;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}
.timeline-item:last-child {
  margin-bottom: 0;
}
.timeline-dot {
  position: absolute;
  left: -36px;
  top: 6px;
  width: 24px;
  height: 24px;
  background: var(--bg-primary);
  border: 3px solid var(--accent-primary);
  border-radius: 50%;
  z-index: 1;
}

.timeline-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  transition: all var(--transition-normal);
}
.timeline-card:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.timeline-date {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  font-family: var(--font-mono);
}
.timeline-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.timeline-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}
.timeline-content {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ==========================================================================
   6. 精選作品集模組 (Portfolio Section)
   ========================================================================== */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.portfolio-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}
.portfolio-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md);
}

.portfolio-thumb {
  height: 180px;
  background: linear-gradient(135deg, var(--bg-secondary), var(--card-bg));
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  color: var(--accent-primary);
  position: relative;
}
.portfolio-thumb svg {
  width: 56px;
  height: 56px;
  stroke: currentColor;
}
.portfolio-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.portfolio-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.portfolio-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.portfolio-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}
.portfolio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}
.tag-badge {
  font-size: 0.75rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   7. 聯絡模組 (Contact Section)
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
}

.contact-info-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.contact-info-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.contact-info-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 28px;
}

.contact-meta-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact-meta-item {
  display: flex;
  align-items: center;
  gap: 16px;
}
.contact-meta-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-meta-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}
.contact-meta-content h4 {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
}
.contact-meta-content p,
.contact-meta-content a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* 聯絡表單 (前台輕量互動) */
.contact-form-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-fast);
}
.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent-primary);
  background: var(--card-bg);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}
.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-alert {
  display: none;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 0.9rem;
}
.form-alert.success {
  display: block;
  background: rgba(15, 157, 88, 0.12);
  color: var(--success-color);
  border: 1px solid var(--success-color);
}
.form-alert.error {
  display: block;
  background: rgba(217, 48, 37, 0.12);
  color: var(--danger-color);
  border: 1px solid var(--danger-color);
}

/* ==========================================================================
   8. 頁尾模組 (Footer)
   ========================================================================== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 32px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
}
.footer-dev-info {
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.footer-dev-info a {
  color: var(--accent-primary);
  font-weight: 600;
}

.footer-clock-box {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}
.footer-privacy-note {
  display: flex;
  align-items: center;
  gap: 6px;
}
.privacy-icon {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* ==========================================================================
   響應式媒體查詢 (RWD Media Queries)
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-cta {
    justify-content: center;
  }
  .hero-socials {
    justify-content: center;
  }
  .hero-card {
    max-width: 480px;
    margin: 0 auto;
  }
  .about-grid,
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .skills-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .mobile-toggle-btn {
    display: inline-flex;
  }
  .about-grid,
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.35rem;
  }
  .footer-top,
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}