/* ─────────────────────────────────────────────────────
   Tokens
───────────────────────────────────────────────────── */
:root {
  --bg:           #0a0a0a;
  --surface:      #0f0f0f;
  --border:       #1a1a1a;
  --border-hover: #2e2e2e;
  --accent:       #d4924a;
  --accent-glow:  rgba(212, 146, 74, 0.15);
  --accent-dim:   rgba(212, 146, 74, 0.5);
  --text:         #e2e2e2;
  --text-dim:     #999;
  --text-muted:   #3d3d3d;
  --font:         'JetBrains Mono', monospace;
  --max:          860px;
  --px:           clamp(1.5rem, 5vw, 4rem);
}

/* ─────────────────────────────────────────────────────
   Light theme
───────────────────────────────────────────────────── */
[data-theme="light"] {
  --bg:           #f4efe6;
  --surface:      #ede7da;
  --border:       #d4cbbf;
  --border-hover: #b8ad9f;
  --accent:       #b5642a;
  --accent-glow:  rgba(181, 100, 42, 0.1);
  --accent-dim:   rgba(181, 100, 42, 0.5);
  --text:         #1c1714;
  --text-dim:     #5c5248;
  --text-muted:   #9c9088;
}

[data-theme="light"] .card:hover {
  box-shadow: 0 0 32px rgba(181, 100, 42, 0.1), 0 8px 24px rgba(0,0,0,0.08);
}

[data-theme="light"] .card::before {
  background: linear-gradient(135deg, rgba(181,100,42,0.05) 0%, transparent 60%);
}

[data-theme="light"] .card:hover .tag {
  border-color: rgba(181, 100, 42, 0.3);
  color: rgba(181, 100, 42, 0.7);
}

[data-theme="light"] .hero::before {
  background: radial-gradient(circle, rgba(181, 100, 42, 0.06) 0%, transparent 65%);
}

/* ─────────────────────────────────────────────────────
   Theme toggle
───────────────────────────────────────────────────── */
.theme-btn {
  position: fixed;
  top: 1.5rem;
  right: clamp(1.5rem, 5vw, 4rem);
  z-index: 9999;
  background: var(--surface);
  border: 1px solid var(--border-hover);
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  padding: 0.42em 0.8em;
  cursor: pointer;
  border-radius: 1px;
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  transition:
    border-color 0.2s ease,
    color        0.2s ease,
    background   0.2s ease,
    box-shadow   0.2s ease;
  user-select: none;
}

.theme-btn:hover {
  border-color: var(--accent-dim);
  color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.theme-btn:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.theme-icon {
  font-size: 0.8rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.7;
}

.theme-btn:hover .theme-icon { opacity: 1; }

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Scanlines */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    180deg,
    transparent 0px,
    transparent 3px,
    rgba(255, 255, 255, 0.03) 3px,
    rgba(255, 255, 255, 0.03) 4px
  );
  pointer-events: none;
  z-index: 9000;
}

[data-theme="light"] body::after {
  background: repeating-linear-gradient(
    180deg,
    transparent 0px,
    transparent 3px,
    rgba(0, 0, 0, 0.04) 3px,
    rgba(0, 0, 0, 0.04) 4px
  );
}

/* Focus styles */
:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 2px; }

/* ─────────────────────────────────────────────────────
   Hero
───────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 0 var(--px);
}

/* Ambient amber glow */
.hero::before {
  content: '';
  position: absolute;
  width: 700px;
  height: 700px;
  top: 50%;
  left: 0;
  transform: translate(-20%, -50%);
  background: radial-gradient(circle, rgba(212, 146, 74, 0.06) 0%, transparent 65%);
  pointer-events: none;
  animation: ambient 8s ease-in-out infinite;
}

@keyframes ambient {
  0%, 100% { opacity: 0.6; transform: translate(-20%, -50%) scale(1); }
  50%       { opacity: 1;   transform: translate(-20%, -50%) scale(1.08); }
}

.hero-inner {
  max-width: 680px;
  position: relative;
  z-index: 1;
}

/* Prompt line */
.hero-prompt {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 1.8rem;
  opacity: 0;
  animation: fade-in 0.4s ease 0.2s forwards;
}

.prompt-text { color: var(--text-muted); }

.prompt-cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
}

/* Name */
.hero-name {
  font-size: clamp(2.4rem, 7vw, 5rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.05;
  letter-spacing: -0.02em;
  min-height: 1.2em;
  position: relative;
}

/* Typing cursor on name */
.hero-name::after {
  content: '_';
  color: var(--accent);
  opacity: 0;
  font-weight: 400;
}

.hero-name.is-typing::after {
  opacity: 1;
  animation: blink 0.65s step-end infinite;
}

.hero-name.is-done::after {
  opacity: 1;
  animation: blink 1.4s step-end infinite;
}

/* Subtitle */
.hero-sub {
  margin-top: 1.2rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  font-weight: 300;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.hero-sub.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Scroll hint */
.hero-scroll {
  display: inline-block;
  margin-top: 4rem;
  color: var(--accent-dim);
  text-decoration: none;
  font-size: 1.1rem;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.6s ease, transform 0.6s ease, color 0.2s ease;
  animation: float 2.4s ease-in-out infinite;
  animation-play-state: paused;
}

.hero-scroll.visible {
  opacity: 1;
  transform: translateY(0);
  animation-play-state: running;
}

.hero-scroll:hover { color: var(--accent); }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(7px); }
}

/* ─────────────────────────────────────────────────────
   Layout
───────────────────────────────────────────────────── */
.section {
  padding: clamp(5rem, 10vw, 8rem) var(--px);
}

.container {
  max-width: var(--max);
  margin: 0 auto;
}

.section-label {
  display: block;
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 3rem;
  opacity: 0.65;
}

/* ─────────────────────────────────────────────────────
   About
───────────────────────────────────────────────────── */
.about-body {
  max-width: 560px;
}

.about-body p {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-style: italic;
  font-weight: 300;
  line-height: 1.9;
  color: var(--text-dim);
  padding-left: 1.5rem;
  border-left: 1.5px solid var(--accent);
  border-left-color: rgba(212, 146, 74, 0.5);
}

/* ─────────────────────────────────────────────────────
   Work header + filter
───────────────────────────────────────────────────── */
.work-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.work-header .section-label {
  margin-bottom: 0;
}

.filter-bar {
  display: flex;
  gap: 0.5rem;
}

.filter-btn {
  font-family: var(--font);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 0.3em 0.75em;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.filter-btn:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

.filter-btn.active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-glow);
}

.card {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.card.hidden {
  display: none;
}

/* ─────────────────────────────────────────────────────
   Cards
───────────────────────────────────────────────────── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 2rem;
  cursor: default;
  position: relative;
  transition:
    border-color 0.25s ease,
    box-shadow   0.25s ease,
    transform    0.25s ease;
}

.card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 2px;
  background: linear-gradient(135deg, rgba(212,146,74,0.06) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.card:hover {
  border-color: rgba(212, 146, 74, 0.4);
  box-shadow: 0 0 32px rgba(212, 146, 74, 0.08), 0 8px 24px rgba(0,0,0,0.4);
  transform: translateY(-3px);
}

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

.card-top {
  margin-bottom: 1rem;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.card-name {
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.card-name-link {
  color: inherit;
  text-decoration: none !important;
  transition: opacity 0.2s ease;
}

.card-name-link:hover { opacity: 0.75; }

.card-status {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: 0.6rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  opacity: 0.55;
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  white-space: nowrap;
}

.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.3); }
}

.card-desc {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 1.5rem;
}

.card:hover .card-desc { color: var(--text-dim); transition: color 0.25s ease; }

.card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.65rem;
  color: var(--text-muted);
  border: 1px solid var(--border-hover);
  border-radius: 1px;
  padding: 0.2em 0.55em;
  letter-spacing: 0.08em;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.card:hover .tag {
  border-color: rgba(212, 146, 74, 0.25);
  color: rgba(212, 146, 74, 0.55);
}

.card-links {
  margin-top: 1.6rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
}

.card-link {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.card-link:hover { color: var(--accent); }

.card-link--primary {
  color: var(--accent);
  opacity: 0.7;
}

.card-link--primary:hover { opacity: 1; color: var(--accent); }

/* ─────────────────────────────────────────────────────
   Footer
───────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem var(--px);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-email {
  font-size: 0.78rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.04em;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.footer-email:hover { opacity: 1; }

.footer-copy {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.footer-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.footer-github {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
}

.footer-github:hover { color: var(--accent); }

/* ─────────────────────────────────────────────────────
   Scroll reveal
───────────────────────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger cards */
.grid .card:nth-child(2) { transition-delay: 0.12s; }
.grid .card:nth-child(3) { transition-delay: 0.24s; }

/* ─────────────────────────────────────────────────────
   Keyframes
───────────────────────────────────────────────────── */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes fade-in {
  to { opacity: 1; }
}

/* ─────────────────────────────────────────────────────
   Responsive
───────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .grid { grid-template-columns: 1fr; }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .footer-right {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}