/* ===========================================================
   Varian Rumao — Portfolio Website Styles
   ===========================================================
   A dark, terminal-inspired developer portfolio.

   Sections:
   1. Design Tokens (CSS Variables)
   2. Reset & Base
   3. Layout
   4. Navigation
   5. Hero
   6. Section Headers
   7. Stats & Filters
   8. Repo Cards (GitHub Dashboard)
   9. Skills
   10. Experience Timeline
   11. Education & Certifications
   12. Footer
   13. Animations
   =========================================================== */

:root {
  --bg: #0a0d12;
  --bg-elev: #11161e;
  --bg-card: #141b25;
  --border: #1f2a37;
  --border-strong: #2d3a4d;
  --text: #e6edf3;
  --text-dim: #9da7b3;
  --text-faint: #5a6470;
  --accent: #00ffa3;
  --accent-warm: #ffb547;
  --accent-purple: #8b5cf6;
  --danger: #ff5470;
  --font-display: 'Bricolage Grotesque', serif;
  --font-body: 'Manrope', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --max-width: 1280px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 80px; /* offset for fixed nav so anchor links don't hide section titles */
}
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 20% 0%, rgba(0,255,163,0.08), transparent 60%),
    radial-gradient(ellipse 50% 30% at 80% 100%, rgba(139,92,246,0.06), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}
@media (max-width: 640px) { .container { padding: 0 20px; } }
section { padding: 120px 0; position: relative; }
@media (max-width: 768px) { section { padding: 80px 0; } }

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10,13,18,0.7);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
}
.logo span { color: var(--accent); }
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  font-size: 14px;
  color: var(--text-dim);
  transition: color 0.2s;
  font-weight: 500;
}
.nav-links a:hover { color: var(--accent); }
@media (max-width: 768px) {
  .nav-inner { padding: 14px 20px; }
  .nav-links { gap: 18px; }
  .nav-links a:not(.cta) { display: none; }
}
.cta {
  padding: 8px 16px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  transition: all 0.2s;
}
.cta:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
  background: rgba(0,255,163,0.05);
}

.hero { padding-top: 180px; padding-bottom: 100px; }
.hero-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero-meta::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.9); }
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 9vw, 120px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-bottom: 32px;
}
.hero h1 .accent {
  font-style: normal;
  font-weight: 400;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-warm) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-tagline {
  font-size: clamp(18px, 2vw, 22px);
  color: var(--text-dim);
  max-width: 640px;
  margin-bottom: 48px;
  line-height: 1.5;
}
.hero-tagline strong { color: var(--text); font-weight: 600; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 64px; }
.btn {
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover {
  background: #00d488;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,255,163,0.25);
}
.btn-secondary { border: 1px solid var(--border-strong); color: var(--text); }
.btn-secondary:hover { border-color: var(--text); background: var(--bg-elev); }
.hero-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
}
.info-block .label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-faint);
  margin-bottom: 6px;
}
.info-block .value { font-size: 15px; font-weight: 500; }

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--accent);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 24px;
}
.section-intro {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 720px;
  margin-bottom: 64px;
}

.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 32px;
}
@media (max-width: 640px) { .stats-bar { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--bg-elev); padding: 28px 24px; transition: background 0.25s; }
.stat:hover { background: var(--bg-card); }
.stat .num {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 8px;
}
.stat .lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-faint);
}

.controls-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.filter-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-right: 8px;
}
.chip {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  transition: all 0.2s;
  background: var(--bg-elev);
}
.chip:hover { border-color: var(--border-strong); color: var(--text); }
.chip.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 600;
}
.refresh-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.refresh-btn:hover { border-color: var(--accent); color: var(--accent); }
.refresh-btn.spinning svg { animation: spin 0.8s linear infinite; }

.repo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.repo-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.repo-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}
.repo-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.3);
}
.repo-card:hover::before { transform: translateX(100%); }
.repo-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}
.repo-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  word-break: break-word;
  line-height: 1.3;
}
.repo-name:hover { color: var(--accent); }
.repo-icon {
  flex-shrink: 0;
  width: 16px; height: 16px;
  color: var(--text-faint);
}
.repo-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.repo-desc.empty { color: var(--text-faint); font-style: italic; }
.repo-langs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.lang-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.lang-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.repo-meta {
  display: flex;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
}
.repo-meta-item { display: inline-flex; align-items: center; gap: 5px; }
.loading-state, .error-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  font-family: var(--font-mono);
  font-size: 14px;
}
.loading-state { color: var(--text-dim); }
.error-state { color: var(--accent-warm); }
.loading-state .spinner {
  display: inline-block;
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 12px;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }
.source-banner {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  text-align: center;
  margin-top: 16px;
  letter-spacing: 0.05em;
}
.source-banner.live { color: var(--accent); }
.source-banner.live::before { content: '● '; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.skill-cat { background: var(--bg-elev); padding: 28px; transition: background 0.25s; }
.skill-cat:hover { background: var(--bg-card); }
.skill-cat-name {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 16px;
}
.skill-list { display: flex; gap: 8px; flex-wrap: wrap; }
.skill-tag {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  font-size: 13px;
  transition: all 0.2s;
}
.skill-tag:hover { border-color: var(--accent); color: var(--accent); }

.exp-list { display: flex; flex-direction: column; gap: 32px; }
.exp-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.exp-item:first-child { border-top: none; padding-top: 0; }
@media (max-width: 768px) { .exp-item { grid-template-columns: 1fr; gap: 12px; } }
.exp-date { font-family: var(--font-mono); font-size: 13px; color: var(--accent); }
.exp-role {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.exp-company { font-size: 15px; color: var(--text-dim); margin-bottom: 16px; font-weight: 500; }
.exp-points { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.exp-points li {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
  padding-left: 22px;
  position: relative;
}
.exp-points li::before {
  content: '▸';
  position: absolute;
  left: 0; top: 0;
  color: var(--accent);
  font-family: var(--font-mono);
}

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
@media (max-width: 768px) { .two-col { grid-template-columns: 1fr; gap: 48px; } }
.edu-item, .cert-item {
  padding: 24px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  transition: all 0.25s;
}
.edu-item:hover, .cert-item:hover {
  border-color: var(--border-strong);
  background: var(--bg-card);
}
.edu-degree, .cert-name { font-weight: 600; font-size: 16px; margin-bottom: 6px; }
.edu-school, .cert-issuer { font-size: 14px; color: var(--text-dim); margin-bottom: 4px; }
.edu-date, .cert-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
}

footer { padding: 80px 0 40px; border-top: 1px solid var(--border); margin-top: 80px; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; } }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-faint);
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: var(--text-dim); transition: color 0.2s; font-size: 14px; }
.footer-col a:hover { color: var(--accent); }
.footer-tagline {
  font-family: var(--font-display);
  font-size: 22px;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }