/* ============================================
   破碎流星个人主页 - Design System
   Dark Theme + Amber Gold Accent
   ============================================ */

/* CSS Variables */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-glass: rgba(255, 255, 255, 0.05);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Accent - Amber Gold */
  --accent-primary: #f59e0b;
  --accent-secondary: #fbbf24;
  --accent-glow: rgba(245, 158, 11, 0.3);
  --accent-subtle: rgba(245, 158, 11, 0.1);

  /* Text */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-tertiary: rgba(255, 255, 255, 0.5);

  /* Typography */
  --font-display: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', system-ui, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px var(--accent-glow);
}

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

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

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-3xl);
}

.section {
  padding: var(--space-3xl) 0;
}

/* Background Effects */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-subtle), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(245, 158, 11, 0.05), transparent);
  pointer-events: none;
  z-index: -1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
  color: var(--text-secondary);
  max-width: 65ch;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--accent-secondary);
}

/* Glass Card */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
}

.glass-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-logo span {
  color: var(--accent-primary);
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--space-sm) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Mobile Menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-2xl);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .detail-section {
    padding: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-xl);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-base);
    z-index: 999;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  /* Hero mobile */
  .hero-avatar {
    width: clamp(100px, 25vw, 150px);
    height: clamp(100px, 25vw, 150px);
  }

  .hero-signature {
    font-size: 0.9rem;
    padding: var(--space-sm) var(--space-md);
  }

  .hero-links {
    flex-direction: column;
    align-items: center;
  }

  /* Filter bar mobile */
  .filter-bar {
    gap: 6px;
    padding: 0 var(--space-sm);
  }

  .filter-bar .filter-btn {
    padding: 4px 10px;
    font-size: 0.75rem;
  }

  /* Nav mobile safe area */
  .nav-links {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }

  /* Grid mobile - more breathing room */
  .grid {
    gap: var(--space-lg);
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  /* Contact cards stack better on small screens */
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  border: none;
  transition: var(--transition-base);
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: var(--accent-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
}

.btn-outline:hover {
  background: var(--accent-subtle);
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
}

/* Tags */
.tag {
  display: inline-flex;
  padding: var(--space-xs) var(--space-sm);
  background: var(--accent-subtle);
  color: var(--accent-primary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

.tag-special {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

/* Grid */
.grid {
  display: grid;
  gap: var(--space-xl);
  max-width: 1200px;
  margin: 0 auto;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Software Card */
.software-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  cursor: pointer;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.software-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  opacity: 0;
  transition: var(--transition-base);
}

.software-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.software-card:hover::before {
  opacity: 1;
}

.software-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-md);
}

.software-name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.software-platform {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
}

.software-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.software-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.software-card.special {
  border-color: rgba(239, 68, 68, 0.3);
}

.software-card.special::before {
  background: linear-gradient(90deg, #ef4444, #f97316);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  position: relative;
}

.hero-content {
  max-width: 800px;
}

.hero-avatar {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--accent-primary);
  box-shadow: var(--shadow-glow);
  margin-bottom: var(--space-xl);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-name {
  margin-bottom: var(--space-sm);
}

.hero-name span {
  color: var(--accent-primary);
}

.hero-enname {
  font-size: 1.25rem;
  color: var(--text-tertiary);
  margin-bottom: var(--space-lg);
  font-weight: 400;
  text-align: center !important;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--accent-primary);
  margin-bottom: var(--space-lg);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-shadow: 0 0 30px var(--accent-glow);
  text-transform: capitalize;
}

.hero-signature {
  font-size: 1.125rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: var(--space-xl);
  padding: var(--space-md);
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-primary);
  display: inline-block;
}

.hero-links {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  color: var(--text-tertiary);
  max-width: 600px;
  margin: 0 auto;
}

/* Filter Bar */
.filter-bar {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  justify-content: center;
}

.filter-btn {
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-subtle);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* Detail Page */
.detail-header {
  padding-top: 100px;
  padding-bottom: var(--space-2xl);
  text-align: center;
}

.detail-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-md);
}

.detail-platform {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-lg);
  text-align: center;
}

.detail-platform span {
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.detail-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto var(--space-xl);
  line-height: 1.8;
  text-align: center;
  width: 100%;
}

.detail-intro {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin: var(--space-lg) auto;
  text-align: center;
  max-width: 800px;
  width: 100%;
}

.detail-features {
  list-style: none;
  margin: var(--space-lg) 0;
  padding: 0;
  display: grid;
  gap: var(--space-md);
}

.detail-feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  transition: var(--transition-fast);
  word-break: break-word;
}

.detail-feature-item:hover {
  background: var(--accent-subtle);
  color: var(--text-primary);
}

.detail-feature-item svg {
  margin-top: 2px;
}

.detail-tips {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  background: rgba(245, 158, 11, 0.08);
  border-left: 3px solid var(--accent-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  text-align: left;
}

.detail-tags {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.detail-section {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.detail-section h3 {
  margin-bottom: var(--space-md);
  color: var(--accent-primary);
}

.link-grid {
  display: grid;
  gap: var(--space-md);
}

.link-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  flex-wrap: wrap;
}

.link-item:hover {
  background: var(--accent-subtle);
}

.link-item-name {
  font-weight: 600;
  color: var(--text-primary);
  min-width: 80px;
}

.link-item-actions {
  margin-left: auto;
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.link-item .btn {
  flex-shrink: 0;
}

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: var(--transition-base);
}

.contact-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.contact-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-md);
  background: var(--accent-subtle);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.contact-label {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-bottom: var(--space-sm);
}

.contact-value {
  font-size: 1.125rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* Quote Section */
.quote-section {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  background: linear-gradient(180deg, transparent, var(--bg-secondary), transparent);
}

.quote-text {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  font-family: 'Noto Serif SC', serif;
  text-align: center;
}

.quote-source {
  color: var(--accent-primary);
  font-size: 1rem;
  text-align: center;
}

/* Footer */
.footer {
  padding: var(--space-2xl);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-tertiary);
  font-size: 0.875rem;
  text-align: center;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  text-align: center;
}

.footer-inner p {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

#detail-meta {
  text-align: center;
  display: block;
}

.footer a {
  color: var(--accent-primary);
}

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

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Loading Skeleton */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-glass) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

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

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}