/* ─────────────────────────────────────────────────────
   style.css — Portfolio Styles
   Sections:
     1. Reset & Design Tokens
     2. Global / Layout
     3. Navigation
     4. Hero
     5. About
     6. Projects
     7. Skills
     8. Contact
     9. Footer
    10. Animations & Scroll Reveal
    11. Responsive
───────────────────────────────────────────────────── */


/* ─── 1. Reset & Design Tokens ─────────────────────── */

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

:root {
  --bg:           #fafaf8;
  --bg2:          #f3f3ef;
  --border:       #e4e4de;
  --ink:          #1a1a18;
  --ink-2:        #6b6b63;
  --ink-3:        #a8a89e;
  --accent:       #2563eb;
  --accent-light: #eff4ff;
  --font:         'DM Sans', sans-serif;
  --mono:         'DM Mono', monospace;
  --max:          760px;
  --r:            6px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}


/* ─── 2. Global / Layout ───────────────────────────── */

.container {
  max-width: calc(var(--max) + 4rem);
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 5rem 0;
}

.section-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

h2 {
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 2rem;
  line-height: 1.2;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--r);
  text-decoration: none;
  transition: all 0.15s;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ink);
  color: #fff;
}

.btn-primary:hover {
  background: #333;
}

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

.btn-outline:hover {
  border-color: var(--ink-2);
  background: var(--bg2);
}


/* ─── 3. Navigation ────────────────────────────────── */

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250,250,248,0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: calc(var(--max) + 4rem);
  margin: 0 auto;
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-logo span {
  color: var(--accent);
}

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

.nav-links a {
  font-size: 0.875rem;
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.15s;
}

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


/* ─── 4. Hero ──────────────────────────────────────── */

#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  padding: 8rem 0 5rem;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-2);
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: up 0.5s 0.1s ease forwards;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1.1;
  color: var(--ink);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: up 0.5s 0.2s ease forwards;
}

h1 strong {
  font-weight: 500;
}

.hero-bio {
  font-size: 1.05rem;
  color: var(--ink-2);
  max-width: 480px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
  font-weight: 300;
  opacity: 0;
  animation: up 0.5s 0.32s ease forwards;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: up 0.5s 0.44s ease forwards;
}


/* ─── 5. About ─────────────────────────────────────── */

#about {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}

.about-body {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 5rem;
  align-items: start;
}

.about-text p {
  color: var(--ink-2);
  font-weight: 300;
  font-size: 0.9625rem;
  margin-bottom: 1rem;
}

.about-text p:last-child {
  margin-bottom: 0;
}

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

.about-meta {
  display: flex;
  flex-direction: column;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

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

.meta-key {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.meta-val {
  color: var(--ink);
  font-weight: 400;
}


/* ─── 6. Projects ──────────────────────────────────── */

#projects {
  border-bottom: 1px solid var(--border);
}

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

.project-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

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

.project-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
}

.project-item h3 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.project-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--accent);
  background: var(--accent-light);
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  letter-spacing: 0.04em;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--ink-2);
  font-weight: 300;
  max-width: 440px;
}

.project-stack {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-3);
  margin-top: 0.6rem;
}

.project-links {
  display: flex;
  gap: 0.75rem;
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.project-links a {
  font-size: 0.8rem;
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.15s;
}

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


/* ─── 7. Skills ────────────────────────────────────── */

#skills {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.5rem;
}

.skill-group h4 {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.skill-group ul {
  list-style: none;
}

.skill-group li {
  font-size: 0.875rem;
  color: var(--ink-2);
  font-weight: 300;
  padding: 0.3rem 0;
}


/* ─── 8. Contact ───────────────────────────────────── */

#contact {
  border-bottom: 1px solid var(--border);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-left p {
  color: var(--ink-2);
  font-weight: 300;
  font-size: 0.9625rem;
  margin-bottom: 1.75rem;
  line-height: 1.75;
}

.contact-right {
  display: flex;
  flex-direction: column;
}

.contact-link-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--ink);
  transition: all 0.15s;
}

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

.contact-link-row:hover {
  padding-left: 0.25rem;
  color: var(--accent);
}

.contact-link-row:hover .link-arrow {
  transform: translateX(3px);
}

.link-name {
  font-size: 0.9rem;
  font-weight: 500;
}

.link-handle {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-3);
}

.link-arrow {
  font-size: 1rem;
  color: var(--ink-3);
  transition: transform 0.15s;
}


/* ─── 9. Footer ────────────────────────────────────── */

footer {
  padding: 1.5rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--ink-3);
  font-family: var(--mono);
}


/* ─── 10. Animations & Scroll Reveal ───────────────── */

@keyframes up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.in {
  opacity: 1;
  transform: none;
}


/* ─── 11. Responsive ───────────────────────────────── */

@media (max-width: 640px) {
  section { padding: 3.5rem 0; }
  .hero-inner { padding: 7rem 0 3.5rem; }
  h1 { font-size: 2.25rem; }

  .about-body,
  .contact-layout { grid-template-columns: 1fr; gap: 2.5rem; }

  .skills-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }

  .project-item { grid-template-columns: 1fr; gap: 0.75rem; }

  .footer-inner { flex-direction: column; gap: 0.4rem; text-align: center; }
}