/* Saran Krachangkaew — dark portfolio */

:root {
  --bg: #0a0a0a;
  --bg-surface: #111111;
  --bg-elevated: #1a1a1a;
  --text: #f0ede8;
  --text-muted: #888;
  --text-subtle: #444;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.1);
  --accent-hover: #00bfa0;
  --accent-b: #8b5cf6;
  --accent-b-dim: rgba(139, 92, 246, 0.1);
  --accent-c: #f59e0b;
  --accent-c-dim: rgba(245, 158, 11, 0.1);
  --border: rgba(255, 255, 255, 0.07);
  --border-accent: rgba(0, 212, 170, 0.3);
  --radius: 12px;
  --radius-lg: 18px;
  --font-sans: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --space-section: clamp(5rem, 12vw, 8rem);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #000;
  border-radius: 6px;
  font-weight: 600;
  z-index: 1000;
}
.skip-link:focus { top: 1rem; }

.container {
  width: min(1120px, 100% - 2.5rem);
  margin-inline: auto;
}

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

/* ── Header ── */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.75rem;
}

.logo {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.06em;
  border: 1px solid rgba(0, 212, 170, 0.25);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  transition: background 0.2s, border-color 0.2s;
}
.logo:hover { background: var(--accent-dim); border-color: var(--border-accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}
.nav-toggle:focus-visible { outline: 2px solid var(--accent); border-radius: 4px; }

.nav-toggle-bar {
  display: block;
  width: 1.25rem;
  height: 1.5px;
  margin-inline: auto;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.22s ease, opacity 0.22s ease;
}
.site-header.nav-open .nav-toggle-bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.site-header.nav-open .nav-toggle-bar:nth-child(2) { opacity: 0; }
.site-header.nav-open .nav-toggle-bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-list {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-list a:hover { color: var(--text); }
.nav-list a:focus-visible { outline: 2px solid var(--accent); border-radius: 2px; }

@media (max-width: 680px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .site-nav.is-open { max-height: 240px; }
  .nav-list {
    flex-direction: column;
    gap: 0;
    padding: 1rem 1.5rem 1.25rem;
  }
  .nav-list a { display: block; padding: 0.65rem 0; border-bottom: 1px solid var(--border); }
  .nav-list li:last-child a { border-bottom: none; }
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(7rem, 16vw, 10rem) 0 var(--space-section);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 50% at 0% 30%, rgba(0, 212, 170, 0.07), transparent),
    radial-gradient(ellipse 45% 55% at 100% 75%, rgba(139, 92, 246, 0.06), transparent);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}
@media (min-width: 900px) {
  .hero-inner { grid-template-columns: 1fr 1fr; gap: 4rem; }
}

.hero-content { max-width: 44rem; }

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.kicker-dot {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.75); }
}

.hero-title {
  margin: 0 0 1.25rem;
  font-size: clamp(3rem, 8.5vw, 5.75rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.04em;
  color: var(--text);
}

.hero-subtitle {
  margin: 0 0 1.125rem;
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.8vw, 0.9375rem);
  color: var(--text-muted);
  letter-spacing: 0.01em;
}

.hero-desc {
  margin: 0 0 2.75rem;
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 44ch;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 999px;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
}
.btn:active { transform: scale(0.97); }

.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: rgba(255, 255, 255, 0.15); background: var(--bg-surface); }
.btn-ghost:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 52px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.06), transparent);
}
.hero-scroll-hint span {
  display: block;
  width: 1px;
  height: 18px;
  background: var(--accent);
  animation: scroll-drop 1.9s ease-in-out infinite;
}
@keyframes scroll-drop {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(34px); opacity: 0; }
}

/* ── Sections ── */
.section { padding: var(--space-section) 0; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.5rem;
}

/* ── About ── */
.about { border-top: 1px solid var(--border); }

.about-grid {
  display: grid;
  gap: 3rem;
  align-items: start;
}
@media (min-width: 768px) {
  .about-grid { grid-template-columns: 1fr 1fr; gap: 4rem; }
}

.about-title {
  margin: 0 0 1.5rem;
  font-size: clamp(1.75rem, 3.5vw, 2.375rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.about-text p {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.75;
}
.about-text p:last-child { margin: 0; }

.skills-block {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.skills-title {
  margin: 0 0 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  padding: 0.3rem 0.7rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: border-color 0.2s, color 0.2s;
  cursor: default;
}
.skill-tag:hover { border-color: var(--border-accent); color: var(--accent); }

/* ── Work ── */
.work { border-top: 1px solid var(--border); }

.work-title {
  margin: 0 0 3rem;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.project-grid {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 640px) { .project-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .project-grid { grid-template-columns: repeat(3, 1fr); } }

.project-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.project-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(0, 212, 170, 0.05);
}

.project-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.project-icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 10px;
  background: var(--accent-dim);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.project-icon--b { background: var(--accent-b-dim); color: var(--accent-b); }
.project-icon--c { background: var(--accent-c-dim); color: var(--accent-c); }

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  justify-content: flex-end;
}
.tag {
  padding: 0.18rem 0.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.69rem;
  color: var(--text-subtle);
  white-space: nowrap;
}

.project-title {
  margin: 0 0 0.625rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}

.project-desc {
  margin: 0;
  flex: 1;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.project-footer {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: gap 0.2s;
}
.project-link:hover { gap: 0.55rem; }
.project-link:focus-visible { outline: 2px solid var(--accent); border-radius: 2px; }

/* ── Contact ── */
.contact { border-top: 1px solid var(--border); }

.contact-title {
  margin: 0 0 1rem;
  font-size: clamp(2.5rem, 6.5vw, 4.25rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.contact-desc {
  margin: 0 0 2.5rem;
  color: var(--text-muted);
  font-size: 1.0625rem;
  max-width: 46ch;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.contact-chip:hover {
  border-color: var(--border-accent);
  color: var(--accent);
  background: var(--accent-dim);
}
.contact-chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--radius); }

/* ── Footer ── */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}
.footer-inner { text-align: center; }
.footer-copy {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-subtle);
}

/* ── Terminal widget ── */
.hero-terminal { width: 100%; }

.terminal {
  background: #0d0d0d;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.04);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.terminal-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: 0.7rem 1rem;
  background: #161616;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  gap: 0.75rem;
}

.terminal-dots { display: flex; gap: 0.4rem; align-items: center; }

.tdot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.tdot-red    { background: #ff5f57; }
.tdot-yellow { background: #febc2e; }
.tdot-green  { background: #28c840; }

.terminal-title {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-subtle);
  letter-spacing: 0.02em;
}

.terminal-body {
  padding: 1.25rem 1.25rem 1.5rem;
  min-height: 220px;
  max-height: 320px;
  overflow-y: auto;
  line-height: 1.7;
  color: #ccc;
  scroll-behavior: smooth;
}
.terminal-body::-webkit-scrollbar { width: 4px; }
.terminal-body::-webkit-scrollbar-track { background: transparent; }
.terminal-body::-webkit-scrollbar-thumb { background: rgba(0,212,170,0.2); border-radius: 2px; }
.t-ibuf { outline: none; }

.t-line { display: flex; gap: 0.5rem; white-space: pre; }
.t-line + .t-line { margin-top: 0.1rem; }
.t-prompt { color: var(--accent); user-select: none; }
.t-cmd { color: #f0ede8; }
.t-out { color: #888; padding-left: 0.25rem; }
.t-out.success { color: var(--accent); }
.t-out.result { color: #f0ede8; margin-top: 0.5rem; }
.t-out.dim { color: #555; }
.t-code { color: #7dd3c8; font-size: 0.75rem; }
.t-code-dim { color: #444; font-size: 0.75rem; font-style: italic; }
.t-cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1.1s step-end infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

/* ── Custom cursor ── */
@media (hover: hover) and (pointer: fine) {
  body, a, button, .skill-tag { cursor: none; }
}

.cursor-dot {
  position: fixed;
  top: 0; left: 0;
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.08s ease, opacity 0.2s;
  box-shadow: 0 0 8px var(--accent), 0 0 16px rgba(0,212,170,0.4);
}

.cursor-ring {
  position: fixed;
  top: 0; left: 0;
  width: 32px; height: 32px;
  border: 1px solid rgba(0,212,170,0.5);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s, border-color 0.2s;
}

.cursor-ring.is-hovering {
  width: 48px; height: 48px;
  border-color: var(--accent);
}

/* ── Matrix canvas ── */
#bg-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 1;
}

.hero-inner, .hero-scroll-hint { position: relative; z-index: 1; }

/* ── Glitch on hero name ── */
.hero-title {
  animation: name-glitch 9s infinite;
}

@keyframes name-glitch {
  0%, 88%, 100% { text-shadow: none; transform: none; filter: none; }
  89%  { text-shadow: -3px 0 var(--accent-b), 3px 0 var(--accent); transform: translateX(-2px); }
  90%  { text-shadow: 3px 0 var(--accent-b), -3px 0 var(--accent); transform: translateX(2px) skewX(-1deg); }
  91%  { text-shadow: none; transform: none; }
  92%  { text-shadow: -2px 0 var(--accent); transform: translateX(-1px); filter: brightness(1.4); }
  93%  { text-shadow: none; transform: none; filter: none; }
}

/* ── Logo flicker ── */
.logo {
  animation: logo-flicker 12s infinite;
}

@keyframes logo-flicker {
  0%, 95%, 100% { opacity: 1; }
  96%            { opacity: 0.4; }
  97%            { opacity: 1; }
  98%            { opacity: 0.2; }
  99%            { opacity: 1; }
}

/* ── Terminal scanlines ── */
.terminal-body {
  position: relative;
}
.terminal-body::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 2px,
    rgba(0,0,0,0.08) 2px,
    rgba(0,0,0,0.08) 4px
  );
  pointer-events: none;
  z-index: 0;
}

/* ── Section label glow pulse ── */
.section-label {
  animation: label-pulse 3s ease-in-out infinite;
}

@keyframes label-pulse {
  0%, 100% { text-shadow: 0 0 6px rgba(0,212,170,0.4); }
  50%       { text-shadow: 0 0 14px rgba(0,212,170,0.8), 0 0 28px rgba(0,212,170,0.3); }
}

/* ── Neon card hover ── */
.project-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow:
    0 0 0 1px rgba(0,212,170,0.15),
    0 8px 32px rgba(0,212,170,0.08),
    0 0 60px rgba(0,212,170,0.04);
}

/* ── Contact chip glow on hover ── */
.contact-chip:hover {
  box-shadow: 0 0 16px rgba(0,212,170,0.2), 0 0 32px rgba(0,212,170,0.08);
}

/* ── Skill tag scramble visual ── */
.skill-tag:hover {
  border-color: var(--border-accent);
  color: var(--accent);
  text-shadow: 0 0 8px rgba(0,212,170,0.5);
}

/* ── Reveal animation (progressive enhancement only) ── */
.js-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.js-reveal.is-visible { opacity: 1; transform: none; }
.project-grid .js-reveal:nth-child(2) { transition-delay: 0.1s; }
.project-grid .js-reveal:nth-child(3) { transition-delay: 0.2s; }