/* MIA_Ether — Cyber Portfolio v4 · Theme · Lang · Terminal · Radar · Cursor */

:root, [data-theme="dark"] {
  --bg: #06060a;
  --bg-elevated: #0c0c14;
  --bg-card: #101018;
  --border: #1c1c2a;
  --border-hover: #2e2e42;
  --text: #eaeaF4;
  --text-secondary: #9a9ab2;
  --text-muted: #68687e;
  --accent: #00e8ff;
  --accent-2: #ff2d95;
  --accent-dim: rgba(0, 232, 255, 0.12);
  --accent-glow: rgba(0, 232, 255, 0.4);
  --grid: rgba(0, 232, 255, 0.035);
  --header-bg: rgba(6, 6, 10, 0.88);
  --card-shadow: 0 16px 48px -20px rgba(0, 0, 0, 0.75);
  --font: "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --cursor-mix: difference;
}

[data-theme="light"] {
  --bg: #f2f2f7;
  --bg-elevated: #fff;
  --bg-card: #fff;
  --border: #dcdce8;
  --border-hover: #b8b8cc;
  --text: #101018;
  --text-secondary: #4a4a5e;
  --text-muted: #787890;
  --accent: #0088a0;
  --accent-2: #c4156e;
  --accent-dim: rgba(0, 136, 160, 0.1);
  --accent-glow: rgba(0, 136, 160, 0.25);
  --grid: rgba(0, 100, 120, 0.05);
  --header-bg: rgba(242, 242, 247, 0.92);
  --card-shadow: 0 12px 40px -16px rgba(0, 0, 0, 0.1);
  --cursor-mix: normal;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}
body.has-custom-cursor, body.has-custom-cursor * { cursor: none !important; }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.8;
}

#particles {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  z-index: 100;
  box-shadow: 0 0 12px var(--accent-glow);
  transition: width 0.05s linear;
}

.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9999;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.2s;
}
.cursor-dot {
  width: 6px; height: 6px;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}
.cursor-ring {
  width: 32px; height: 32px;
  border: 1px solid var(--accent);
  transition: width 0.15s, height 0.15s, border-color 0.15s;
}
body.has-custom-cursor .cursor-dot,
body.has-custom-cursor .cursor-ring { opacity: 1; }
.cursor-ring.hover { width: 48px; height: 48px; border-color: var(--accent-2); }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; }
.mono { font-family: var(--mono); letter-spacing: 0.04em; }

.skip-link {
  position: absolute; top: -100px; left: 1rem;
  background: var(--accent); color: #000;
  padding: 0.5rem 1rem; border-radius: 6px; z-index: 200; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

.container {
  width: 100%; max-width: 1040px;
  margin: 0 auto; padding: 0 1.5rem;
  position: relative; z-index: 1;
}

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.site-header.scrolled { border-bottom-color: var(--border); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 58px; }
.logo {
  display: flex; align-items: center; gap: 0.6rem;
  background: none; border: none; cursor: pointer;
  font-weight: 600; font-size: 0.95rem; color: var(--text);
  letter-spacing: -0.02em; padding: 0;
}
.logo-mark {
  width: 26px; height: 26px; background: var(--accent); color: #000;
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.8rem;
  box-shadow: 0 0 14px var(--accent-glow);
}
.nav-links { display: flex; align-items: center; gap: 1.5rem; }
.nav-links a {
  font-size: 0.84rem; color: var(--text-secondary);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 0.4rem; }
.icon-btn {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 8px; width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-secondary);
  transition: border-color 0.2s, color 0.2s;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }
[data-theme="light"] .icon-sun { display: block; }
[data-theme="light"] .icon-moon { display: none; }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 0.4rem;
}
.nav-toggle span { display: block; width: 18px; height: 1.5px; background: var(--text); }

/* Logo menu */
.logo-menu {
  position: fixed; inset: 0; z-index: 80;
  background: rgba(0, 0, 0, 0.55);
  display: flex; align-items: flex-start; justify-content: flex-start;
  padding: 70px 1.5rem 1.5rem;
}
.logo-menu[hidden] { display: none !important; }
.logo-menu-panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.25rem; min-width: 220px;
  box-shadow: var(--card-shadow); position: relative;
  animation: menuIn 0.25s var(--ease);
}
@keyframes menuIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}
.logo-menu-close {
  position: absolute; top: 8px; right: 10px;
  background: none; border: none; color: var(--text-muted);
  font-size: 1.25rem; cursor: pointer; line-height: 1;
}
.logo-menu-title {
  font-size: 0.7rem; color: var(--accent); margin-bottom: 0.85rem;
}
.logo-menu-item {
  display: block; width: 100%; text-align: left;
  background: none; border: none; color: var(--text-secondary);
  font-size: 0.88rem; padding: 0.55rem 0.4rem; cursor: pointer;
  border-radius: 6px; transition: background 0.15s, color 0.15s;
  font-family: var(--font);
}
.logo-menu-item:hover { background: var(--accent-dim); color: var(--accent); }

/* Terminal */
.terminal-overlay {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(0, 0, 0, 0.7);
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
}
.terminal-overlay[hidden] { display: none !important; }
.terminal-window {
  width: 100%; max-width: 560px; max-height: 80vh;
  background: #0a0a10; border: 1px solid var(--border);
  border-radius: 12px; overflow: hidden;
  box-shadow: 0 0 60px rgba(0, 232, 255, 0.15);
  display: flex; flex-direction: column;
  animation: menuIn 0.25s var(--ease);
}
.terminal-bar {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.65rem 0.9rem; background: #12121a;
  border-bottom: 1px solid var(--border);
}
.terminal-dots { display: flex; gap: 6px; }
.terminal-dots i {
  width: 10px; height: 10px; border-radius: 50%; display: block;
}
.terminal-dots i:nth-child(1) { background: #ff5f57; }
.terminal-dots i:nth-child(2) { background: #febc2e; }
.terminal-dots i:nth-child(3) { background: #28c840; }
.terminal-title { flex: 1; font-size: 0.75rem; color: var(--text-muted); }
.terminal-close {
  background: none; border: none; color: var(--text-muted);
  font-size: 1.2rem; cursor: pointer; line-height: 1;
}
.terminal-body {
  padding: 1rem; overflow-y: auto; flex: 1;
  font-family: var(--mono); font-size: 0.8rem; line-height: 1.7;
  min-height: 180px; max-height: 360px; color: #c8c8d8;
}
.terminal-line { margin-bottom: 0.25rem; word-break: break-word; }
.t-green { color: #4ade80; }
.t-cyan { color: var(--accent); }
.t-pink { color: var(--accent-2); }
.t-muted { color: #6a6a80; }
.terminal-input-row {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.65rem 0.9rem; border-top: 1px solid var(--border);
  background: #0c0c14;
}
.t-prompt { font-size: 0.8rem; white-space: nowrap; }
.terminal-input {
  flex: 1; background: transparent; border: none; outline: none;
  color: var(--text); font-size: 0.8rem; caret-color: var(--accent);
}

/* Hero */
.hero { padding: 130px 0 80px; position: relative; overflow: hidden; }
.hero-bg {
  position: absolute; top: -15%; left: 50%; transform: translateX(-50%);
  width: 680px; height: 480px;
  background: radial-gradient(ellipse, var(--accent-dim) 0%, transparent 65%);
  pointer-events: none;
}
.hero-inner { text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.72rem; color: var(--text-secondary);
  background: var(--bg-elevated); border: 1px solid var(--border);
  padding: 5px 12px; border-radius: 100px; margin-bottom: 1.5rem;
}
.pulse {
  width: 7px; height: 7px; background: var(--accent); border-radius: 50%;
  box-shadow: 0 0 0 0 var(--accent-glow); animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 var(--accent-glow); }
  70% { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.hero-title {
  font-size: clamp(2.5rem, 8vw, 4rem); font-weight: 700;
  letter-spacing: -0.04em; line-height: 1.05; margin-bottom: 0.75rem;
}
.glitch { text-shadow: 0 0 40px var(--accent-glow); }
.hero-tagline {
  font-size: 0.82rem; color: var(--text-secondary); font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.4rem;
}
.hero-sub { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 1.75rem; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.86rem; font-weight: 500; padding: 10px 16px;
  border-radius: 10px; transition: all 0.2s var(--ease); cursor: pointer; border: none;
}
.btn-primary {
  background: var(--accent); color: #000;
  box-shadow: 0 0 22px var(--accent-glow);
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  color: var(--text); border-color: var(--border-hover);
  background: var(--bg-elevated);
}

/* Sections */
.section { padding: 4.5rem 0; position: relative; z-index: 1; }
.section-label {
  font-size: 0.8rem; font-weight: 500; color: var(--text-muted);
  margin-bottom: 1.35rem; display: flex; align-items: center; gap: 0.55rem;
}
.section-label .mono { color: var(--accent); font-size: 0.72rem; }
.section-header { margin-bottom: 2rem; }
.section-desc { font-size: 1.02rem; color: var(--text-secondary); margin-top: 0.3rem; }

.about-grid {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 3rem; align-items: start;
}
.about-lead {
  font-size: 1.25rem; font-weight: 500; letter-spacing: -0.02em;
  line-height: 1.45; margin-bottom: 1.15rem;
}
.about-content p { color: var(--text-secondary); margin-bottom: 0.9rem; max-width: 52ch; }
.about-meta { display: flex; flex-direction: column; gap: 1.2rem; }
.meta-item { display: flex; flex-direction: column; gap: 0.15rem; }
.meta-label {
  font-size: 0.68rem; color: var(--text-muted); text-transform: uppercase;
  letter-spacing: 0.08em; font-family: var(--mono);
}
.meta-value { font-size: 0.92rem; color: var(--text-secondary); }

/* Filters */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 0.45rem; margin-bottom: 1.5rem;
}
.filter-btn {
  font-family: var(--mono); font-size: 0.72rem;
  padding: 5px 12px; border-radius: 100px;
  background: var(--bg-elevated); border: 1px solid var(--border);
  color: var(--text-muted); cursor: pointer; transition: all 0.2s;
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--accent); color: var(--accent);
  background: var(--accent-dim);
}

.project-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 1rem;
}
.project-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 1.25rem;
  display: flex; flex-direction: column; gap: 0.75rem;
  transition: border-color 0.2s, transform 0.2s var(--ease), box-shadow 0.2s, opacity 0.3s;
}
.project-card.hidden { display: none; }
.project-card:hover {
  border-color: var(--border-hover); transform: translateY(-2px);
  box-shadow: var(--card-shadow);
}
.project-card.featured { border-color: rgba(0, 232, 255, 0.3); }
.project-card.featured:hover {
  border-color: var(--accent);
  box-shadow: 0 12px 40px -12px var(--accent-glow);
}
.project-status {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.68rem; color: var(--text-muted);
}
.status-dot { width: 6px; height: 6px; border-radius: 50%; }
.status-dot.live { background: #34d399; box-shadow: 0 0 8px rgba(52, 211, 153, 0.5); }
.status-dot.planned { background: var(--text-muted); }
.project-title { font-size: 1.02rem; font-weight: 600; letter-spacing: -0.02em; }
.project-title a:hover { color: var(--accent); }
.project-desc { font-size: 0.86rem; color: var(--text-secondary); line-height: 1.55; flex: 1; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.project-tags span {
  font-size: 0.68rem; color: var(--text-muted); background: var(--bg-elevated);
  border: 1px solid var(--border); padding: 2px 8px; border-radius: 100px;
  font-family: var(--mono);
}
.project-footer { margin-top: 0.2rem; padding-top: 0.75rem; border-top: 1px solid var(--border); }
.project-link { font-size: 0.84rem; font-weight: 500; color: var(--text-secondary); }
.project-link:hover { color: var(--accent); }
.project-link.muted { color: var(--text-muted); cursor: default; }

/* Skills */
.skills-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: center;
}
.radar-wrap { position: relative; max-width: 280px; margin: 0 auto; }
.radar { width: 100%; height: auto; }
.radar-grid polygon, .radar-grid line {
  fill: none; stroke: var(--border); stroke-width: 1;
}
.radar-area {
  fill: var(--accent-dim); stroke: var(--accent); stroke-width: 1.5;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}
.radar-dot { fill: var(--accent); }
.radar-labels {
  position: absolute; inset: 0; pointer-events: none;
}
.radar-labels span {
  position: absolute; font-size: 0.68rem; font-family: var(--mono);
  color: var(--text-muted); transform: translate(-50%, -50%);
  white-space: nowrap;
}
.skill-bars { display: flex; flex-direction: column; gap: 1rem; }
.skill-bar-label {
  display: flex; justify-content: space-between;
  font-size: 0.82rem; margin-bottom: 0.35rem; color: var(--text-secondary);
}
.skill-track {
  height: 6px; background: var(--bg-elevated); border-radius: 100px;
  border: 1px solid var(--border); overflow: hidden;
}
.skill-fill {
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 100px;
  transition: width 1s var(--ease);
  box-shadow: 0 0 10px var(--accent-glow);
}
.skill-fill.animated { width: var(--w, 0%); }

/* Lab */
.lab-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 0.85rem;
}
.lab-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 1.15rem;
  transition: border-color 0.2s, transform 0.2s;
}
.lab-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.lab-icon { font-size: 1.15rem; margin-bottom: 0.65rem; color: var(--accent); font-family: var(--mono); }
.lab-card h3 { font-size: 0.9rem; font-weight: 600; margin-bottom: 0.3rem; }
.lab-card p { font-size: 0.8rem; color: var(--text-muted); line-height: 1.45; }

/* Music */
.music-card {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 1.25rem; padding: 1.5rem 1.75rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px;
  background-image: linear-gradient(135deg, var(--accent-dim), transparent 50%);
}
.music-label { font-size: 0.7rem; color: var(--accent); display: block; margin-bottom: 0.35rem; }
.music-info h3 { font-size: 1.1rem; margin-bottom: 0.25rem; }
.music-info p { font-size: 0.86rem; color: var(--text-secondary); }

/* Blog */
.blog-list { display: flex; flex-direction: column; gap: 0.75rem; }
.blog-item {
  display: grid; grid-template-columns: 60px 1fr auto; gap: 1rem; align-items: start;
  padding: 1.1rem 1.25rem; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: 12px;
  transition: border-color 0.2s;
}
.blog-item:hover { border-color: var(--border-hover); }
.blog-item.muted { opacity: 0.65; }
.blog-date { font-size: 0.75rem; color: var(--accent); padding-top: 0.15rem; }
.blog-item h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.25rem; }
.blog-item p { font-size: 0.84rem; color: var(--text-muted); }
.blog-tag {
  font-size: 0.68rem; color: var(--text-muted);
  border: 1px solid var(--border); padding: 3px 8px; border-radius: 100px;
}

/* Timeline */
.timeline-track {
  position: relative; padding-left: 1.6rem;
  border-left: 1px solid var(--border); margin-left: 0.4rem;
  display: flex; flex-direction: column; gap: 2.25rem;
}
.timeline-item { position: relative; }
.timeline-item::before {
  content: ""; position: absolute;
  left: calc(-1.6rem - 4px); top: 5px;
  width: 9px; height: 9px; background: var(--bg);
  border: 2px solid var(--accent); border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-glow);
}
.timeline-year { font-size: 0.72rem; font-weight: 600; color: var(--accent); margin-bottom: 0.3rem; }
.timeline-content h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 0.3rem; }
.timeline-content p { font-size: 0.88rem; color: var(--text-secondary); max-width: 48ch; }

/* Contact */
.contact-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 0.75rem;
}
.contact-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.05rem 1.15rem;
  display: flex; flex-direction: column; gap: 0.3rem;
  transition: border-color 0.2s, transform 0.2s;
}
.contact-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.contact-label { font-size: 0.66rem; color: var(--text-muted); letter-spacing: 0.06em; }
.contact-value { font-size: 0.88rem; font-weight: 500; color: var(--text-secondary); word-break: break-all; }
.contact-card:hover .contact-value { color: var(--accent); }
.contact-note { margin-top: 1.35rem; text-align: center; font-size: 0.72rem; color: var(--text-muted); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border); padding: 2.25rem 0; margin-top: 1.5rem;
  position: relative; z-index: 1;
}
.footer-inner {
  display: flex; flex-direction: column; align-items: center; gap: 0.75rem; text-align: center;
}
.footer-brand { display: flex; align-items: center; gap: 0.45rem; font-weight: 600; font-size: 0.88rem; }
.footer-brand .logo-mark { width: 20px; height: 20px; font-size: 0.65rem; border-radius: 5px; }
.footer-copy { font-size: 0.72rem; color: var(--text-muted); letter-spacing: 0.12em; }
.footer-links { display: flex; gap: 1.25rem; }
.footer-links a { font-size: 0.84rem; color: var(--text-secondary); }
.footer-links a:hover { color: var(--accent); }

@media (max-width: 768px) {
  .nav-links {
    display: none; position: absolute; top: 58px; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    flex-direction: column; padding: 1.15rem 1.5rem; gap: 0.75rem;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero { padding: 110px 0 60px; }
  .about-grid, .skills-layout { grid-template-columns: 1fr; gap: 1.75rem; }
  .lab-grid { grid-template-columns: 1fr 1fr; }
  .blog-item { grid-template-columns: 50px 1fr; }
  .blog-tag { display: none; }
  .section { padding: 3.25rem 0; }
  body.has-custom-cursor, body.has-custom-cursor * { cursor: auto !important; }
  .cursor-dot, .cursor-ring { display: none !important; }
}
@media (max-width: 480px) {
  .lab-grid, .contact-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}