:root {
  --hue: 220;
  --brightness: 1;
  --bg: hsl(var(--hue) 42% 10%);
  --surface: hsl(var(--hue) 34% 14%);
  --surface-2: hsl(var(--hue) 34% 18%);
  --text: hsl(var(--hue) 100% 95%);
  --muted: hsl(var(--hue) 40% 74%);
  --accent: hsl(var(--hue) 92% 64%);
  --accent-2: hsl(calc(var(--hue) + 18) 92% 70%);
  --border: hsl(var(--hue) 35% 30%);
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

[data-theme="light"] {
  --bg: hsl(var(--hue) 36% 95%);
  --surface: hsl(var(--hue) 48% 99%);
  --surface-2: hsl(var(--hue) 44% 97%);
  --text: hsl(var(--hue) 44% 14%);
  --muted: hsl(var(--hue) 20% 35%);
  --border: hsl(var(--hue) 24% 78%);
  --shadow: 0 12px 24px rgba(7, 26, 64, 0.12);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at top right, color-mix(in srgb, var(--accent) 18%, var(--bg)), var(--bg) 45%);
  color: var(--text);
  line-height: 1.6;
  filter: brightness(var(--brightness));
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -12vmax;
  z-index: -1;
  pointer-events: none;
}

body::before {
  background:
    radial-gradient(circle at 20% 30%, color-mix(in srgb, var(--accent) 30%, transparent), transparent 45%),
    radial-gradient(circle at 75% 40%, color-mix(in srgb, var(--accent-2) 24%, transparent), transparent 42%),
    radial-gradient(circle at 50% 70%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 50%);
  animation: drift 18s linear infinite;
}

body::after {
  background-image:
    linear-gradient(color-mix(in srgb, var(--accent) 18%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent-2) 14%, transparent) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: 0.22;
  mask-image: radial-gradient(circle at center, #000 35%, transparent 85%);
  animation: pulse 8s ease-in-out infinite;
}

#fxCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.quick-tools {
  position: fixed;
  top: 12px;
  right: 16px;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  color: var(--text);
  cursor: pointer;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.28);
}

.icon-btn:hover {
  border-color: var(--accent-2);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(11, 16, 32, 0.75);
  border-bottom: 1px solid rgba(79, 140, 255, 0.2);
  z-index: 20;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.logo {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 1px;
}

.nav {
  display: flex;
  gap: 1.2rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.25s ease;
}

.nav a:hover,
.nav a.active {
  color: var(--accent-2);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
}

.section {
  padding: 72px 0;
}

.hero {
  min-height: 76vh;
  display: grid;
  align-items: center;
  position: relative;
  z-index: 2;
}

.theme-panel {
  position: absolute;
  top: 48px;
  right: 0;
  width: min(340px, 90vw);
  border: 1px solid color-mix(in srgb, var(--accent) 32%, var(--border));
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  border-radius: 12px;
  padding: 0.9rem;
  box-shadow: var(--shadow);
}

.theme-panel.hidden {
  display: none;
}

.theme-panel h3 {
  margin: 0 0 0.7rem 0;
  font-size: 1rem;
}

.control-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  align-items: center;
  gap: 0.7rem;
  margin: 0.45rem 0;
}

.control-row label {
  color: var(--muted);
  font-size: 0.9rem;
}

.control-row input,
.control-row select {
  width: 100%;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-height: 36px;
}

.hero-avatar {
  width: 104px;
  height: 104px;
  margin-bottom: 0.7rem;
  border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--accent-2) 60%, var(--border));
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 12%, transparent), 0 8px 24px rgba(0, 0, 0, 0.35);
  object-fit: cover;
  transition: transform 0.28s ease, box-shadow 0.28s ease, filter 0.28s ease;
  transform: translate3d(var(--avatar-x, 0px), var(--avatar-y, 0px), 0) scale(var(--avatar-scale, 1));
  filter: saturate(1.02);
}

.hero-avatar.near {
  box-shadow:
    0 0 0 7px color-mix(in srgb, var(--accent) 20%, transparent),
    0 0 30px color-mix(in srgb, var(--accent-2) 45%, transparent),
    0 10px 28px rgba(0, 0, 0, 0.36);
  filter: saturate(1.08);
}

.eyebrow {
  display: inline-block;
  margin-bottom: 0.6rem;
  color: var(--accent-2);
  font-size: 0.8rem;
  letter-spacing: 2px;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.2;
}

h2 {
  margin-top: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.accent {
  color: var(--accent-2);
}

.hero-text,
.section-text {
  max-width: 700px;
  color: var(--muted);
}

.hero-actions {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.15rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #041028;
  box-shadow: 0 6px 18px rgba(79, 140, 255, 0.35);
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

.tags {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tags span {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  position: relative;
  z-index: 2;
}

.card {
  background: linear-gradient(145deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.15rem;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, border-color 0.25s ease;
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}

.card::after {
  content: "";
  position: absolute;
  top: -120%;
  left: -15%;
  width: 60%;
  height: 260%;
  background: linear-gradient(120deg, transparent, color-mix(in srgb, var(--accent-2) 18%, transparent), transparent);
  transform: rotate(18deg);
  transition: transform 0.6s ease;
}

.card:hover::after {
  transform: rotate(18deg) translateY(28%);
}

.project-image {
  width: 100%;
  height: 170px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-bottom: 0.85rem;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.project-actions {
  margin-top: 0.95rem;
}

.more-projects-card {
  margin-top: 1rem;
}

.more-projects-card h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.08rem;
}

.btn-small {
  padding: 0.48rem 0.8rem;
  font-size: 0.88rem;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.45rem;
}

.section-card {
  background: linear-gradient(145deg, color-mix(in srgb, var(--surface) 94%, transparent), color-mix(in srgb, var(--surface-2) 94%, transparent));
  border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--border));
  border-radius: 14px;
  padding: 1.1rem 1.15rem;
  box-shadow: var(--shadow);
  position: relative;
  z-index: 2;
}

.tech-stack-card {
  margin-top: 0.9rem;
}

.stack-group + .stack-group {
  margin-top: 0.8rem;
}

.stack-group h3 {
  margin: 0 0 0.45rem 0;
  font-size: 1rem;
  color: var(--text);
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.skill-chip {
  display: inline-block;
  padding: 0.32rem 0.72rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 36%, var(--border));
  background: color-mix(in srgb, var(--surface-2) 90%, transparent);
  color: var(--muted);
  font-size: 0.88rem;
}

.contact-list strong {
  color: var(--text);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.2rem 0;
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  to {
    transform: translate3d(-3%, 2%, 0) rotate(360deg);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.16;
  }
  50% {
    opacity: 0.28;
  }
}

@media (max-width: 900px) {
  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .quick-tools {
    top: 10px;
    right: 10px;
    gap: 0.35rem;
  }

  .icon-btn {
    width: 34px;
    height: 34px;
    border-radius: 9px;
  }

  .menu-toggle {
    display: flex;
  }

  .nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    padding: 0.8rem 4%;
    background: rgba(11, 16, 32, 0.97);
    border-bottom: 1px solid var(--border);
  }

  .nav.open {
    display: flex;
  }

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

  .control-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .section {
    padding: 62px 0;
  }
}