/* ============================================
   小辰 (Zane) Personal Homepage — style.css
   Pink Tech + Glassmorphism
   ============================================ */

/* --- CSS Custom Properties (Theme Tokens) --- */
:root {
  --bg: #f4f0f6;
  --text: #1a1a2e;
  --text-secondary: #6b6b80;
  --primary: #e879a8;
  --primary-rgb: 232, 121, 168;
  --accent: #a78bfa;
  --accent-rgb: 167, 139, 250;
  --blue: #60a5fa;
  --blue-rgb: 96, 165, 250;
  --green: #34d399;
  --green-rgb: 52, 211, 153;
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-shadow: rgba(0, 0, 0, 0.06);
  --card-hover-shadow: rgba(232, 121, 168, 0.15);
  --aurora-opacity: 0.5;
  --particle-color: 232, 121, 168;
  --transition-speed: 0.3s;
}

[data-theme="dark"] {
  --bg: #0a0a1a;
  --text: #e8e6f0;
  --text-secondary: #9898b0;
  --primary: #f0a0c0;
  --primary-rgb: 240, 160, 192;
  --accent: #b8a0ff;
  --accent-rgb: 184, 160, 255;
  --blue: #80b8ff;
  --blue-rgb: 128, 184, 255;
  --green: #34d399;
  --green-rgb: 52, 211, 153;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: rgba(0, 0, 0, 0.3);
  --card-hover-shadow: rgba(240, 160, 192, 0.2);
  --aurora-opacity: 0.25;
  --particle-color: 240, 160, 192;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-speed), color var(--transition-speed);
  line-height: 1.6;
}

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

/* --- Aurora Background --- */
.aurora {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.aurora-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  mix-blend-mode: screen;
  opacity: var(--aurora-opacity);
  transition: opacity var(--transition-speed);
}

.aurora-blob--pink {
  width: 600px;
  height: 600px;
  background: var(--primary);
  top: -15%;
  left: -10%;
  animation: auroraDrift1 20s ease-in-out infinite;
}

.aurora-blob--purple {
  width: 500px;
  height: 500px;
  background: var(--accent);
  top: 40%;
  right: -10%;
  animation: auroraDrift2 25s ease-in-out infinite;
}

.aurora-blob--blue {
  width: 550px;
  height: 550px;
  background: var(--blue);
  bottom: -15%;
  left: 30%;
  animation: auroraDrift3 28s ease-in-out infinite;
}

@keyframes auroraDrift1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(80px, 60px) scale(1.1); }
  50% { transform: translate(40px, 120px) scale(0.95); }
  75% { transform: translate(-30px, 50px) scale(1.05); }
}

@keyframes auroraDrift2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(-60px, 80px) scale(1.08); }
  50% { transform: translate(-100px, 30px) scale(0.92); }
  75% { transform: translate(40px, -40px) scale(1.03); }
}

@keyframes auroraDrift3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(60px, -50px) scale(1.06); }
  50% { transform: translate(100px, -20px) scale(0.97); }
  75% { transform: translate(-20px, 40px) scale(1.04); }
}

/* --- Particle Canvas --- */
#particle-canvas {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

/* --- Main Layout --- */
.main-container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem 1.5rem;
}

/* --- Top Controls (Theme + Lang) --- */
.top-controls {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 100;
  display: flex;
  gap: 0.75rem;
}

.control-btn {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  font-family: inherit;
}

.control-btn:hover {
  transform: scale(1.12) rotate(15deg);
  box-shadow: 0 4px 20px var(--card-hover-shadow);
}

.control-btn--lang {
  width: auto;
  padding: 0 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.control-btn--lang:hover {
  transform: scale(1.08);
}

/* --- Hero Card (Glassmorphism) --- */
.hero-card {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 2.5rem 2rem;
  max-width: 520px;
  width: 100%;
  text-align: center;
  box-shadow: 0 8px 40px var(--glass-shadow);
  transition: box-shadow var(--transition-speed), background var(--transition-speed);
  animation: cardFadeIn 0.8s ease-out;
}

@keyframes cardFadeIn {
  from { opacity: 0; transform: translateY(30px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* --- Avatar --- */
.avatar-wrapper {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem;
}

.avatar-glow {
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, var(--primary), var(--accent), var(--blue), var(--primary));
  animation: avatarGlowSpin 6s linear infinite;
  opacity: 0.6;
  filter: blur(8px);
}

@keyframes avatarGlowSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.avatar {
  position: relative;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--glass-border);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 1;
}

.avatar-wrapper:hover .avatar {
  transform: scale(1.12);
}

/* --- Name (Gradient Text) --- */
.name {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent), var(--blue), var(--primary));
  background-size: 300% 300%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 5s ease infinite;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* --- Tagline (Typewriter) --- */
.tagline {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  min-height: 1.6em;
  font-weight: 400;
}

.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--primary);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: cursorBlink 0.6s step-end infinite;
}

.typewriter-cursor.hidden {
  display: none;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* --- Status Badge --- */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: rgba(var(--green-rgb), 0.1);
  border: 1px solid rgba(var(--green-rgb), 0.25);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  transition: background var(--transition-speed), border-color var(--transition-speed);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: breathe 2s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(var(--green-rgb), 0.5); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(var(--green-rgb), 0); }
}

/* --- Bio --- */
.bio {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Social Links (Pill Buttons) --- */
.social-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
  margin-bottom: 0.5rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.3s ease,
              background 0.3s ease,
              border-color 0.3s ease;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.social-link:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px var(--card-hover-shadow), 0 0 20px rgba(var(--primary-rgb), 0.15);
  border-color: rgba(var(--primary-rgb), 0.35);
}

.social-link i {
  font-size: 0.95rem;
  color: var(--primary);
}

/* --- Site Navigation Grid --- */
.site-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 720px;
  width: 100%;
  margin-top: 2rem;
}

.site-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  padding: 1.25rem 0.75rem;
  text-align: center;
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.3s ease,
              background 0.3s ease;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.site-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px var(--card-hover-shadow);
}

.site-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(var(--primary-rgb), 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: background 0.3s ease;
}

.site-card:hover .site-card-icon {
  background: rgba(var(--primary-rgb), 0.15);
}

.site-card-icon img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.site-card-name {
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.3;
}

.site-card-desc {
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* --- Footer --- */
.footer {
  margin-top: 2.5rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
  opacity: 0.7;
  text-align: center;
}

.about-footer {
  margin-top: 2rem;
}

#project-text {
  margin-bottom: 0.3rem;
}

#project-text a {
  color: var(--primary);
  text-decoration: none;
  opacity: 0.85;
  transition: opacity 0.2s;
}

#project-text a:hover {
  opacity: 1;
  text-decoration: underline;
}

/* --- About Page --- */
.about-container {
  position: relative;
  z-index: 2;
  max-width: 680px;
  width: 100%;
  margin: 0 auto;
  padding: 5rem 1.5rem 3rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  margin-bottom: 2rem;
  align-self: flex-start;
  font-family: inherit;
}

.back-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--card-hover-shadow);
}

.about-card {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 2.5rem 2rem;
  box-shadow: 0 8px 40px var(--glass-shadow);
  flex: 1;
}

.article-content {
  transition: opacity 0.3s ease;
}

.article-content.fade-out {
  opacity: 0;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.article-content p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.highlight {
  color: var(--primary);
  font-weight: 600;
}

/* --- Tags --- */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--glass-border);
}

.tag {
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: rgba(var(--primary-rgb), 0.08);
  border: 1px solid rgba(var(--primary-rgb), 0.15);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background 0.25s ease, border-color 0.25s ease;
}

.tag:hover {
  background: rgba(var(--primary-rgb), 0.15);
  border-color: rgba(var(--primary-rgb), 0.3);
}

/* --- Responsive (480px) --- */
@media (max-width: 480px) {
  .hero-card {
    padding: 1.75rem 1.25rem;
    border-radius: 20px;
  }

  .avatar-wrapper,
  .avatar {
    width: 90px;
    height: 90px;
  }

  .avatar-glow {
    inset: -6px;
  }

  .name {
    font-size: 1.5rem;
  }

  .tagline {
    font-size: 0.92rem;
  }

  .bio {
    font-size: 0.85rem;
  }

  .social-link {
    padding: 0.45rem 0.85rem;
    font-size: 0.78rem;
  }

  .control-btn {
    width: 36px;
    height: 36px;
    font-size: 0.88rem;
  }

  .control-btn--lang {
    padding: 0 0.65rem;
    font-size: 0.78rem;
  }

  .site-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-top: 1.5rem;
  }

  .site-card {
    padding: 1rem 0.6rem;
    border-radius: 14px;
  }

  .site-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }

  .site-card-icon img {
    width: 26px;
    height: 26px;
  }

  .site-card-name {
    font-size: 0.78rem;
  }

  .site-card-desc {
    font-size: 0.68rem;
  }

  .about-card {
    padding: 1.75rem 1.25rem;
  }

  .aurora-blob--pink { width: 350px; height: 350px; }
  .aurora-blob--purple { width: 300px; height: 300px; }
  .aurora-blob--blue { width: 320px; height: 320px; }
}

/* --- Tip Modal --- */

.tip-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0);
  backdrop-filter: blur(0px);
  transition: background 0.3s, backdrop-filter 0.3s;
  cursor: pointer;
}

.tip-overlay--visible {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
}

.tip-modal {
  position: relative;
  max-width: 360px;
  width: 90vw;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  cursor: default;
  transform: scale(0.9);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s;
}

.tip-overlay--visible .tip-modal {
  transform: scale(1);
  opacity: 1;
}

.tip-image {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
}

.tip-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.2s;
  backdrop-filter: blur(4px);
}

.tip-close:hover {
  background: rgba(0, 0, 0, 0.7);
  transform: scale(1.1);
}

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

  .aurora-blob {
    animation: none !important;
  }

  .avatar-glow {
    animation: none !important;
  }

  .status-dot {
    animation: none !important;
    opacity: 1;
  }

  .name {
    animation: none !important;
    background-position: 0% 50% !important;
  }
}