/* ===================================================
   PORTFOLIO — style.css
   Fonts: DM Serif Display (headings) + Instrument Sans (body) + DM Mono (code/tags)
=================================================== */

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

:root {
  --ink:       #1a1917;
  --ink-muted: #6b6a66;
  --ink-faint: #a09e98;
  --paper:     #f8f6f1;
  --surface:   #efece5;
  --accent:    #5DCAFA;
  --accent-dk: #2ab8f5;
  --accent-2:  #0AEC7A;
  --border:    rgba(26, 25, 23, 0.12);

  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans:  'Instrument Sans', system-ui, sans-serif;
  --font-mono:  'DM Mono', 'Courier New', monospace;

  --max-w:     760px;
  --pad-x:     clamp(1.25rem, 5vw, 3rem);

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

/* --- Nav ---------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--pad-x);
  background: var(--paper);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-muted);
  letter-spacing: 0.03em;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--ink);
}

/* --- Anchor offset (accounts for sticky nav) ---- */
.hero,
.projects {
  scroll-margin-top: 64px;
}

/* --- Hero --------------------------------------- */
.hero {
  padding: clamp(4rem, 12vw, 8rem) var(--pad-x) clamp(3rem, 8vw, 6rem);
  max-width: calc(var(--max-w) + var(--pad-x) * 2);
  margin: 0 auto;
}

.hero-inner {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.7s var(--ease-out) 0.1s forwards;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 1rem;
}

.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 5.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 1.75rem;
}

.hero-name-accent {
  color: var(--ink-muted);
}

.hero-bio {
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  color: var(--ink-muted);
  max-width: 540px;
  line-height: 1.75;
  margin-bottom: 2.25rem;
}

.hero-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: var(--font-sans);
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
  letter-spacing: 0.02em;
  transition: background 0.2s, transform 0.15s;
}

.btn:hover {
  background: var(--accent);
}

.btn:active {
  transform: scale(0.97);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--surface);
  color: var(--ink);
}

.hero-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero-stack span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.3rem 0.65rem;
  border-radius: 3px;
  letter-spacing: 0.04em;
}

.hero-rule {
  margin-top: clamp(3rem, 8vw, 6rem);
  border: none;
  height: 1px;
  background: var(--border);
}

/* --- Projects ----------------------------------- */
.projects {
  padding: clamp(3rem, 8vw, 6rem) var(--pad-x) clamp(4rem, 12vw, 8rem);
  max-width: calc(var(--max-w) + var(--pad-x) * 2);
  margin: 0 auto;
}

.section-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  letter-spacing: -0.01em;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.project-grid {
  display: flex;
  flex-direction: column;
  gap: 1px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.project-card {
  padding: clamp(1.5rem, 4vw, 2.25rem);
  background: var(--paper);
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
}

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

.project-card:hover {
  background: var(--surface);
}

.project-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.project-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-faint);
}

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.project-title {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.project-desc {
  font-size: 0.9375rem;
  color: var(--ink-muted);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 1.25rem;
}

.project-footer {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.project-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}

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

.project-link-secondary {
  color: var(--ink-muted);
}

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

/* --- Footer ------------------------------------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem var(--pad-x);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer p {
  font-size: 0.8125rem;
  color: var(--ink-faint);
  font-family: var(--font-mono);
}

/* --- Animation ---------------------------------- */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Responsive --------------------------------- */
@media (max-width: 540px) {
  .nav-links {
    gap: 1.25rem;
  }

  .hero-links {
    flex-direction: column;
    align-items: flex-start;
  }

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

/* --- Dark mode ---------------------------------- */
@media (prefers-color-scheme: dark) {
  :root {
    --ink:       #f0ede6;
    --ink-muted: #9a9791;
    --ink-faint: #5f5d59;
    --paper:     #141412;
    --surface:   #1e1c1a;
    --accent:    #5DCAFA;
    --accent-dk: #2ab8f5;
    --accent-2:  #0AEC7A;
    --border:    rgba(240, 237, 230, 0.10);
  }
}