/* ---------------------------------------------------------------------
   Design tokens
--------------------------------------------------------------------- */
:root {
  --bg-void: #0a0d0b;
  --bg-surface: #10140f;
  --bg-elevated: #171d18;
  --border: #263029;
  --border-bright: #3a4a3f;

  --text-primary: #e8f0ea;
  --text-muted: #7f9488;
  --text-dim: #566159;

  --accent: #4dffa8;       /* phosphor green — primary signal */
  --accent-dim: #2f8f63;
  --accent-amber: #ffb454; /* secondary — used only for emphasis marks */

  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --radius: 3px;
  --max-width: 900px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

/* ---------------------------------------------------------------------
   3D background canvas + CRT dressing
--------------------------------------------------------------------- */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block;
  pointer-events: none;
}

.page {
  position: relative;
  z-index: 1;
}

.crt-overlay {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.12) 3px,
    rgba(0, 0, 0, 0) 4px
  );
  mix-blend-mode: multiply;
  opacity: 0.5;
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(
    ellipse at center,
    rgba(0, 0, 0, 0) 45%,
    rgba(0, 0, 0, 0.55) 100%
  );
}

@media (prefers-reduced-motion: reduce) {
  .crt-overlay { display: none; }
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

::selection {
  background: var(--accent);
  color: var(--bg-void);
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.mono { font-family: var(--font-mono); }

.prompt {
  color: var(--accent);
  font-family: var(--font-mono);
}

.prompt::before {
  content: "$ ";
  color: var(--text-dim);
}

/* ---------------------------------------------------------------------
   Nav
--------------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 13, 11, 0.85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-brand {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-primary);
}

.nav-brand .cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background: var(--accent);
  margin-left: 2px;
  animation: blink 1.1s steps(1) infinite;
  vertical-align: -2px;
}

.nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 13px;
}

.nav-links a { color: var(--text-muted); }
.nav-links a:hover { color: var(--accent); text-decoration: none; }

/* ---------------------------------------------------------------------
   Hero — terminal window
--------------------------------------------------------------------- */
.hero {
  padding: 72px 0 56px;
}

.terminal {
  position: relative;
  background: rgba(16, 20, 15, 0.72);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-bright);
  border-radius: 8px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.4),
    0 30px 80px -30px rgba(77, 255, 168, 0.22),
    0 0 40px -12px rgba(77, 255, 168, 0.12);
  transform-style: preserve-3d;
  transition: transform 0.12s ease-out, box-shadow 0.2s ease;
  will-change: transform;
}

.terminal:hover {
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.4),
    0 30px 90px -25px rgba(77, 255, 168, 0.32),
    0 0 60px -10px rgba(77, 255, 168, 0.2);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-bright);
}

.terminal-title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

.terminal-body {
  padding: 24px 20px 28px;
  font-family: var(--font-mono);
  font-size: 14px;
  min-height: 200px;
}

.terminal-body .line {
  margin: 0 0 10px;
  white-space: pre-wrap;
  word-break: break-word;
}

.terminal-body .out {
  color: var(--text-muted);
  margin: 0 0 16px;
}

.terminal-body .out strong {
  color: var(--text-primary);
}

.terminal-body .name-out {
  font-size: 26px;
  color: var(--text-primary);
  margin: 4px 0 2px;
}

.terminal-body .title-out {
  color: var(--accent);
  margin: 0 0 18px;
}

.cursor-block {
  display: inline-block;
  width: 9px;
  height: 16px;
  background: var(--accent);
  vertical-align: -3px;
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-cta {
  margin-top: 20px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 9px 16px;
  border: 1px solid var(--border-bright);
  border-radius: var(--radius);
  color: var(--text-primary);
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  border-color: var(--accent);
  color: var(--accent);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-void);
  font-weight: 600;
  box-shadow: 0 0 24px -6px rgba(77, 255, 168, 0.7);
}

.btn-primary:hover {
  color: var(--bg-void);
  background: #6dffbc;
  border-color: #6dffbc;
  box-shadow: 0 0 32px -4px rgba(109, 255, 188, 0.85);
}

.terminal-body .name-out {
  text-shadow: 0 0 18px rgba(232, 240, 234, 0.25);
}

.terminal-body .title-out {
  text-shadow: 0 0 14px rgba(77, 255, 168, 0.45);
}

/* ---------------------------------------------------------------------
   Section scaffolding
--------------------------------------------------------------------- */
.section {
  padding: 56px 0;
  border-top: 1px solid var(--border);
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 28px;
}

.section-head .prompt {
  font-size: 13px;
}

.section-head h2 {
  font-family: var(--font-mono);
  font-size: 20px;
  margin: 0;
  color: var(--text-primary);
  font-weight: 600;
}

/* ---------------------------------------------------------------------
   About
--------------------------------------------------------------------- */
.tilt-card {
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.12s ease-out, border-color 0.2s ease, box-shadow 0.2s ease;
  will-change: transform;
  isolation: isolate;
}

.tilt-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: inherit;
  background: radial-gradient(
    260px circle at var(--mx, 50%) var(--my, 50%),
    rgba(77, 255, 168, 0.12),
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

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

.tilt-card:hover {
  border-color: var(--accent-dim);
}

.tilt-card > * {
  position: relative;
  z-index: 1;
}

.about-body {
  background: rgba(16, 20, 15, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
}

.about-meta {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
}

.about-meta span strong {
  color: var(--text-primary);
  font-weight: 500;
}

/* ---------------------------------------------------------------------
   Skills
--------------------------------------------------------------------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
}

.skill-group {
  background: rgba(16, 20, 15, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.skill-group h3 {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: lowercase;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  margin: 0 0 12px;
}

.skill-group h3::before {
  content: "# ";
  color: var(--accent-dim);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 4px 9px;
  border: 1px solid var(--border-bright);
  border-radius: 999px;
  color: var(--text-primary);
}

/* ---------------------------------------------------------------------
   Projects
--------------------------------------------------------------------- */
.project-list {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.project-row {
  display: block;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(16, 20, 15, 0.6);
  backdrop-filter: blur(8px);
  transition: background 0.15s ease, transform 0.12s ease-out, border-color 0.2s ease;
}

.project-row:last-child { border-bottom: none; }

.project-row:hover {
  background: rgba(23, 29, 24, 0.8);
  text-decoration: none;
}

.project-row-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.project-name {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 600;
}

.project-row:hover .project-name {
  color: var(--accent);
}

.project-stack {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-dim);
  white-space: nowrap;
}

.project-desc {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--text-muted);
}

/* ---------------------------------------------------------------------
   Contact
--------------------------------------------------------------------- */
.contact-body {
  background: rgba(16, 20, 15, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  font-family: var(--font-mono);
  font-size: 14px;
}

.contact-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.contact-list li::before {
  content: "-> ";
  color: var(--accent-dim);
}

/* ---------------------------------------------------------------------
   Footer
--------------------------------------------------------------------- */
footer {
  padding: 28px 0 48px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  text-align: center;
}

/* ---------------------------------------------------------------------
   Glitch text (nav brand, occasional)
--------------------------------------------------------------------- */
.nav-brand {
  position: relative;
  display: inline-block;
}

.nav-brand.glitching {
  animation: glitch-shift 0.22s steps(2, end);
}

.nav-brand.glitching::before,
.nav-brand.glitching::after {
  content: attr(data-glitch);
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  overflow: hidden;
  background: transparent;
}

.nav-brand.glitching::before {
  color: #ff5b6a;
  clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
  transform: translate(-2px, -1px);
  opacity: 0.8;
}

.nav-brand.glitching::after {
  color: #4dd7ff;
  clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
  transform: translate(2px, 1px);
  opacity: 0.8;
}

@keyframes glitch-shift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-1px, 1px); }
  50% { transform: translate(1px, -1px); }
  75% { transform: translate(-1px, 0); }
  100% { transform: translate(0, 0); }
}

/* ---------------------------------------------------------------------
   Scroll reveal
--------------------------------------------------------------------- */
.section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .section {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .nav-brand.glitching::before,
  .nav-brand.glitching::after {
    display: none;
  }
}

/* ---------------------------------------------------------------------
   Responsive
--------------------------------------------------------------------- */
@media (max-width: 640px) {
  .hero { padding: 48px 0 40px; }
  .terminal-body .name-out { font-size: 21px; }
  .nav-links { gap: 14px; font-size: 12px; }
  .about-meta { gap: 16px; }
}