/* ============================================================
   Andrew Christophe — Personal Site
   style.css
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --bg-primary:    #FAF8F5;
  --bg-secondary:  #F0EDE8;
  --bg-card:       #FFFFFF;
  --text-primary:  #1A1A1A;
  --text-secondary:#6B6560;
  --text-muted:    #9B9490;
  --accent:        #C2651A;
  --accent-hover:  #A3541A;
  --accent-light:  rgba(194, 101, 26, 0.08);
  --border:        #E0DBD5;
  --shadow-sm:     0 1px 3px rgba(0,0,0,0.06);
  --shadow-md:     0 4px 12px rgba(0,0,0,0.07);
  --radius:        8px;
  --radius-lg:     14px;
  --max-width:     860px;
  --nav-height:    64px;
  --font:          -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', system-ui, sans-serif;
  --font-mono:     'SF Mono', 'Fira Code', 'Roboto Mono', monospace;
  --transition:    0.18s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  font-size: 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img { display: block; max-width: 100%; }
a  { color: inherit; text-decoration: none; }

/* ── Typography ─────────────────────────────────────────────── */
h1 { font-size: clamp(2rem, 5vw, 3rem);   font-weight: 700; letter-spacing: -0.03em; line-height: 1.15; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); font-weight: 600; letter-spacing: -0.02em; line-height: 1.25; }
h3 { font-size: 1.15rem; font-weight: 600; }
p  { color: var(--text-secondary); max-width: 60ch; }

.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

/* ── Layout ─────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

main { flex: 1; }

section { padding: 5rem 0; }

.section-header { margin-bottom: 3rem; }
.section-header h2 { margin-bottom: 0.6rem; }
.section-header p  { margin-top: 0.5rem; }

/* ── Navigation ─────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(250, 248, 245, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  transition: color var(--transition);
}
.nav-logo:hover { color: var(--accent); }

/* ── Nav Links (modular — add <li> items freely) ──────────── */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--bg-secondary);
}
.nav-links a.active { font-weight: 600; }

/* Hamburger (mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  transition: background var(--transition);
}
.nav-toggle:hover { background: var(--bg-secondary); }
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  box-shadow: 0 2px 8px rgba(194,101,26,0.25);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-outline:hover {
  background: var(--bg-secondary);
  border-color: var(--text-muted);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border-color: transparent;
  padding-left: 0;
}
.btn-ghost:hover { text-decoration: underline; }

.btn-group { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ── Cards ───────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

/* ── Divider ─────────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

/* ── Tags / Badges ───────────────────────────────────────────── */
.tag {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
}

.tag-list { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }

/* ── Social / Icon Links ─────────────────────────────────────── */
.icon-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}
.icon-link:hover { color: var(--accent); }
.icon-link svg  { width: 18px; height: 18px; flex-shrink: 0; }

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  padding: 6rem 0 5rem;
  border-bottom: 1px solid var(--border);
}
.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.hero h1 { margin-bottom: 1.25rem; }
.hero .hero-bio {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 52ch;
  margin-bottom: 2rem;
  line-height: 1.75;
}
.hero-links { display: flex; gap: 1.25rem; flex-wrap: wrap; margin-top: 1.75rem; }

/* ── Home — Feature Strips ───────────────────────────────────── */
.feature-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.feature-item {
  padding: 1.5rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.feature-item h3 { margin-bottom: 0.4rem; font-size: 1rem; }
.feature-item p  { font-size: 0.9rem; max-width: 100%; }

/* ── Resume — Timeline ───────────────────────────────────────── */
.timeline { display: flex; flex-direction: column; gap: 0; }

.timeline-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 0 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}
.timeline-item:last-child { border-bottom: none; }

.timeline-date {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
  padding-top: 0.2rem;
  line-height: 1.4;
}

.timeline-content h3 { margin-bottom: 0.2rem; }
.timeline-content .role-company {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.6rem;
}
.timeline-content p { font-size: 0.92rem; }

/* ── Skills Grid ─────────────────────────────────────────────── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}
.skill-group h4 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}
.skill-group ul { list-style: none; }
.skill-group li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 0.25rem 0;
  border-bottom: 1px solid var(--border);
}
.skill-group li:last-child { border-bottom: none; }

/* ── Project Cards ───────────────────────────────────────────── */
.project-card { display: flex; flex-direction: column; }
.project-card .card-top { flex: 1; }
.project-card h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.project-card p  { font-size: 0.9rem; margin-bottom: 0; }
.project-card .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

/* ── Contact Form ────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3rem;
  align-items: start;
}

form { display: flex; flex-direction: column; gap: 1rem; }

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
}
.form-group input,
.form-group textarea,
.form-group select {
  font-family: var(--font);
  font-size: 0.92rem;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 0.65rem 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(194,101,26,0.12);
}
.form-group textarea { min-height: 130px; }

.form-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ── Contact Info ────────────────────────────────────────────── */
.contact-info-list { display: flex; flex-direction: column; gap: 1.25rem; list-style: none; }
.contact-info-list li { display: flex; flex-direction: column; gap: 0.1rem; }
.contact-info-list .ci-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.contact-info-list .ci-value {
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.contact-info-list .ci-value a { color: var(--accent); }
.contact-info-list .ci-value a:hover { text-decoration: underline; }

/* ── Footer ──────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: auto;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-inner p {
  font-size: 0.82rem;
  color: var(--text-muted);
  max-width: 100%;
}
.footer-links { display: flex; gap: 1rem; }
.footer-links a {
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); }

/* ── Utilities ───────────────────────────────────────────────── */
.text-accent  { color: var(--accent); }
.text-muted   { color: var(--text-muted); }
.mt-1  { margin-top: 0.5rem; }
.mt-2  { margin-top: 1rem; }
.mt-3  { margin-top: 1.5rem; }
.mt-4  { margin-top: 2rem; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 700px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 0.75rem 1.5rem 1rem;
    gap: 0.1rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.55rem 0.5rem; width: 100%; }
  .nav-toggle { display: flex; }

  .hero { padding: 4rem 0 3rem; }

  .timeline-item { grid-template-columns: 1fr; gap: 0.25rem; }
  .timeline-date  { padding-top: 0; }

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

  section { padding: 3.5rem 0; }
}

@media (max-width: 480px) {
  h1 { font-size: 1.85rem; }
  .btn-group { flex-direction: column; align-items: flex-start; }
}