/* =============================================
   Minimalist Personal Website - Vijay Prabhakar
   ============================================= */

/* ---------- THEME VARS ---------- */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --radius: 6px;
  --transition: 0.25s ease;
}

[data-theme="dark"] {
  --bg: #0d1117;
  --bg-secondary: #161b22;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #d29922;
  --accent-hover: #e6b640;
  --border: #30363d;
  --card-bg: #161b22;
  --nav-bg: rgba(13, 17, 23, 0.85);
}

[data-theme="light"] {
  --bg: #ffffff;
  --bg-secondary: #f6f8fa;
  --text: #24292f;
  --text-muted: #656d76;
  --accent: #9a6700;
  --accent-hover: #7a4f00;
  --border: #d0d7de;
  --card-bg: #ffffff;
  --nav-bg: rgba(255, 255, 255, 0.85);
}

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

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

img {
  max-width: 100%;
}

ul {
  list-style: none;
}

/* ---------- CONTAINER ---------- */
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 56px;
  gap: 32px;
}

.nav-logo {
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
}
.nav-logo:hover {
}

  .nav-links {
  display: flex;
  gap: 20px;
  flex: 1;
  }
  .nav-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  }
.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
  }

.theme-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 4px 10px;
  line-height: 1;
  transition: background var(--transition), border-color var(--transition);
  }
.theme-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--accent);
  }

/* ---------- HERO ---------- */
.hero {
  padding: 120px 0 32px;
}

.hero-header {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-bottom: 24px;
}
.hero-photo {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
  flex-shrink: 0;
}

.hero-text {
  flex: 1;
}
  .hero-name {
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 8px;
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 4px;
}

.hero-role {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 0;
  }

.hero-bio {
  font-size: 1rem;
  color: var(--text);
  max-width: 640px;
  margin-bottom: 28px;
}

.hero-links {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}
.hero-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
}
.hero-links a:hover {
  color: var(--accent);
}
.sep {
  color: var(--text-muted);
  margin: 0 10px;
  opacity: 0.5;
}

/* ---------- PAGE ROUTING ---------- */
.page {
  display: block;
}

.page.hidden {
  display: none;
}

/* ---------- SECTIONS ---------- */
.section {
  padding: 48px 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.section-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 40px;
}

.page-hero {
  padding-top: 120px;
}

/* ---------- EXPERIENCE ---------- */
.exp-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.exp-item {
  border-left: 2px solid var(--border);
  padding-left: 20px;
  margin-left: 2px;
}

.exp-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  margin-bottom: 10px;
  }
.exp-role {
  font-weight: 600;
  font-size: 1.05rem;
}

.exp-company {
  font-weight: 500;
  color: var(--accent);
  font-size: 0.95rem;
}

.exp-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-left: auto;
}

.exp-desc {
  margin-top: 4px;
}

.exp-desc li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.6;
}

.exp-desc li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

/* ---------- PROJECTS ---------- */
.project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--transition), transform var(--transition);
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.project-name {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 14px;
}

.project-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.project-lang {
  color: var(--accent);
  background: rgba(210, 153, 34, 0.1);
  padding: 2px 8px;
  border-radius: 3px;
}

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

/* ---------- BLOG ---------- */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.blog-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.blog-placeholder {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.95rem;
}

/* ---------- FOOTER ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 600px) {
  .hero-header {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }

  .hero-name {
    font-size: 2rem;
}

  .nav-links {
    gap: 12px;
  }
  .nav-links a {
    font-size: 0.85rem;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }
  .exp-head {
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
  }
  .exp-date {
    margin-left: 0;
  }
}