/* ===================================================
   banast.as — Design System
   Ref: design.md
   =================================================== */

/* --- Fonts --- */

@font-face {
  font-family: 'Archivo Black';
  src: url("/assets/archivo-black.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Archivo';
  src: url("/assets/archivo-regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url("/assets/jetbrains-mono.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* --- Design Tokens --- */

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

:root {
  --surface: #111111;
  --surface-raised: #1A1A1A;
  --surface-overlay: #222222;
  --text-primary: #F5F5F5;
  --text-secondary: #A0A0A0;
  --text-muted: #666666;
  --accent: #FCCD03;
  --accent-dim: #B8940A;
  --accent-bright: #FFE066;
  --accent-subtle: rgba(252, 205, 3, 0.12);
  --border: #333333;

  --font-display: 'Archivo Black', system-ui, sans-serif;
  --font-body: 'Archivo', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --text-hero: clamp(3rem, 6vw, 5rem);
  --text-display: clamp(2rem, 4vw, 3.5rem);
  --text-heading: clamp(1.5rem, 3vw, 2rem);
  --text-subhead: 1.25rem;
  --text-body: 1rem;
  --text-small: 0.875rem;
  --text-caption: 0.75rem;
  --text-label: 0.6875rem;

  --leading-hero: 0.95;
  --leading-tight: 1.1;
  --leading-body: 1.6;
  --leading-small: 1.5;
  --leading-caption: 1.4;
  --leading-label: 1.2;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  --container-max: 800px;
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* --- Base --- */

html {
  scroll-behavior: smooth;
  scroll-padding-top: 60px;
}

html,
body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--text-secondary);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Elements --- */

a:link,
a:visited {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

a:hover {
  color: var(--accent-bright);
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--text-primary);
  line-height: var(--leading-tight);
  margin: 0;
}

p {
  margin: 0;
}

/* --- Nav --- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(17, 17, 17, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  gap: var(--space-6);
}

.nav-link {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  text-decoration: none;
}

/* --- Layout --- */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-16) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

.section {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

/* --- Section Labels --- */

.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  line-height: var(--leading-label);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border);
}

/* --- Hero --- */

.hero {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.hero-profile {
  margin-bottom: var(--space-2);
}

#profile-img {
  cursor: pointer;
  width: 72px;
  height: 72px;
  max-width: 72px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

#profile-img:hover {
  transform: scale(1.05);
  border-color: var(--accent-bright);
}

.hero-name {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  line-height: var(--leading-hero);
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.hero-title {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
}

.hero-location {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

/* --- About --- */

.about {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.about p {
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--text-secondary);
  max-width: 65ch;
}

.about a {
  text-decoration: underline;
  text-decoration-color: var(--accent-dim);
  text-underline-offset: 2px;
}

.about a:hover {
  color: var(--accent-bright);
  text-decoration-color: var(--accent-bright);
}

/* --- Timeline (Work Experience) --- */

.timeline {
  display: flex;
  flex-direction: column;
}

.timeline-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-6);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.timeline > .timeline-item:first-child {
  padding-top: 0;
}

.timeline-item--active .timeline-date {
  color: var(--accent);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--text-muted);
  letter-spacing: 0.05em;
  white-space: nowrap;
  padding-top: 2px;
}

.timeline-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.timeline-company {
  font-family: var(--font-display);
  font-size: var(--text-subhead);
  color: var(--text-primary);
  text-decoration: none;
  line-height: var(--leading-tight);
}

.timeline-company:hover {
  color: var(--accent);
  text-decoration: none;
}

.timeline-role {
  font-size: var(--text-small);
  color: var(--text-secondary);
  line-height: var(--leading-small);
}

.timeline-loc {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

#work-hidden {
  display: flex;
  flex-direction: column;
}

/* --- Projects --- */

.project-list {
  display: flex;
  flex-direction: column;
}

.project-row {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-3);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--transition-fast);
}

.project-row:first-child {
  border-top: 1px solid var(--border);
}

.project-row:hover {
  background-color: var(--surface-raised);
}

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

.project-name {
  font-size: var(--text-body);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  line-height: var(--leading-small);
}

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

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

.project-meta {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.03em;
}

#projects-hidden {
  display: flex;
  flex-direction: column;
}

/* --- Toggle Button --- */

.btn-toggle {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--border);
  padding: var(--space-3) var(--space-6);
  cursor: pointer;
  margin-top: var(--space-6);
  align-self: flex-start;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  min-height: 44px;
}

.btn-toggle:hover {
  background: var(--accent-subtle);
  border-color: var(--accent-dim);
  color: var(--accent-bright);
}

.btn-toggle:active {
  background: var(--accent-subtle);
}

/* --- Links Grid --- */

.link-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.link-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-6);
  background: var(--surface-raised);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: background-color var(--transition-normal), border-color var(--transition-normal), transform var(--transition-normal);
}

.link-card:hover {
  background: var(--surface-overlay);
  border-color: var(--accent-dim);
  transform: translateY(-2px);
  text-decoration: none;
}

.link-card svg {
  color: var(--accent);
  transition: color var(--transition-fast);
}

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

.link-card-label {
  font-family: var(--font-display);
  font-size: var(--text-body);
  color: var(--text-primary);
  line-height: var(--leading-tight);
}

.link-card-url {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

/* --- Social --- */

.social {
  display: flex;
  gap: var(--space-6);
  padding-top: var(--space-4);
}

.social-link {
  color: var(--text-muted);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
}

.social-link:hover {
  color: var(--accent);
  transform: translateY(-1px);
  text-decoration: none;
}

.social-link svg {
  fill: currentColor;
}

/* --- Glitch Easter Egg --- */

@keyframes glitch {
  0% { clip: rect(42px, 9999px, 44px, 0); transform: skew(0.27deg); }
  5% { clip: rect(16px, 9999px, 78px, 0); transform: skew(0.55deg); }
  10% { clip: rect(95px, 9999px, 34px, 0); transform: skew(0.13deg); }
  15% { clip: rect(15px, 9999px, 65px, 0); transform: skew(0.28deg); }
  20% { clip: rect(68px, 9999px, 78px, 0); transform: skew(0.48deg); }
  25% { clip: rect(31px, 9999px, 55px, 0); transform: skew(0.10deg); }
  30% { clip: rect(90px, 9999px, 18px, 0); transform: skew(0.60deg); }
  35% { clip: rect(85px, 9999px, 45px, 0); transform: skew(0.24deg); }
  40% { clip: rect(5px, 9999px, 68px, 0); transform: skew(0.12deg); }
  45% { clip: rect(84px, 9999px, 39px, 0); transform: skew(0.38deg); }
  50% { clip: rect(54px, 9999px, 85px, 0); transform: skew(0.35deg); }
  55% { clip: rect(97px, 9999px, 21px, 0); transform: skew(0.25deg); }
  60% { clip: rect(12px, 9999px, 60px, 0); transform: skew(0.48deg); }
  65% { clip: rect(99px, 9999px, 56px, 0); transform: skew(0.32deg); }
  70% { clip: rect(48px, 9999px, 35px, 0); transform: skew(0.51deg); }
  75% { clip: rect(52px, 9999px, 72px, 0); transform: skew(0.15deg); }
  80% { clip: rect(29px, 9999px, 55px, 0); transform: skew(0.39deg); }
  85% { clip: rect(67px, 9999px, 95px, 0); transform: skew(0.46deg); }
  90% { clip: rect(39px, 9999px, 76px, 0); transform: skew(0.13deg); }
  95% { clip: rect(44px, 9999px, 47px, 0); transform: skew(0.50deg); }
  100% { clip: rect(91px, 9999px, 26px, 0); transform: skew(0.28deg); }
}

.glitch {
  animation: glitch 1s infinite;
  will-change: clip, transform;
}

@media (prefers-reduced-motion: reduce) {
  .glitch {
    animation: none;
  }
  * {
    transition-duration: 0s !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* --- Responsive --- */

@media (max-width: 640px) {
  .container {
    padding: var(--space-12) var(--space-4);
    gap: var(--space-16);
  }

  .nav-inner {
    padding: var(--space-3) var(--space-4);
    gap: var(--space-4);
  }

  .hero-name {
    font-size: clamp(2.2rem, 10vw, 3rem);
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }

  .timeline-date {
    font-size: var(--text-label);
  }

  .project-row {
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-3);
  }

  .project-meta {
    font-size: var(--text-label);
  }

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