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

:root {
  --color-bg: #0f0f0f;
  --color-surface: #1a1a1a;
  --color-border: #2a2a2a;
  --color-accent: #6366f1;
  --color-accent-hover: #818cf8;
  --color-text: #e5e5e5;
  --color-text-muted: #888;
  --color-text-faint: #555;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 8px;
  --max-width: 860px;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-accent-hover);
}

/* ===== LAYOUT ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== NAV ===== */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(15, 15, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 14px;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

/* ===== HERO ===== */
.hero {
  padding: 96px 0 72px;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero h1 span {
  color: var(--color-accent);
}

.hero-bio {
  font-size: 17px;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

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

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

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

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ===== SECTION ===== */
section {
  padding: 64px 0;
  border-top: 1px solid var(--color-border);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 40px;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 4px 12px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-muted);
}

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 20px;
}

.project-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}

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

.project-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.project-name {
  font-size: 1rem;
  font-weight: 600;
}

.project-links {
  display: flex;
  gap: 10px;
}

.project-links a {
  color: var(--color-text-faint);
  font-size: 13px;
  transition: color 0.2s;
}

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

/* Clickable card variant */
.project-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.project-card-arrow {
  font-size: 16px;
  color: var(--color-text-faint);
  transition: color 0.2s, transform 0.2s;
  display: inline-block;
}

.project-card-link:hover .project-card-arrow {
  color: var(--color-accent);
  transform: translate(2px, -2px);
}

.project-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.stack-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  background-color: rgba(99, 102, 241, 0.1);
  color: var(--color-accent);
  border-radius: 4px;
}

/* ===== CONTACT ===== */
.contact-text {
  color: var(--color-text-muted);
  max-width: 480px;
  margin-bottom: 28px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.contact-item-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-faint);
  width: 70px;
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-faint);
}

/* ===== RESUME PAGE ===== */
.resume-header {
  padding: 72px 0 48px;
}

.resume-header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.resume-header .title {
  font-size: 1rem;
  color: var(--color-accent);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.resume-header .contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.resume-download {
  margin-top: 24px;
}

.resume-section {
  padding: 36px 0;
  border-top: 1px solid var(--color-border);
}

.resume-section-title {
  font-size: 11px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 24px;
}

.resume-entry {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 24px;
  margin-bottom: 28px;
}

.resume-entry:last-child {
  margin-bottom: 0;
}

.entry-title {
  font-weight: 600;
  font-size: 15px;
}

.entry-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-faint);
  white-space: nowrap;
  grid-column: 2;
  grid-row: 1;
  text-align: right;
}

.entry-subtitle {
  font-size: 14px;
  color: var(--color-accent);
  grid-column: 1;
}

.entry-body {
  grid-column: 1 / -1;
  margin-top: 8px;
}

.entry-body ul {
  padding-left: 18px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.entry-body ul li {
  margin-bottom: 4px;
}

.resume-skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.resume-skill-group h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}

.resume-skill-group p {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .hero {
    padding: 64px 0 48px;
  }

  .resume-entry {
    grid-template-columns: 1fr;
  }

  .entry-date {
    grid-column: 1;
    grid-row: auto;
    text-align: left;
    margin-top: 2px;
  }
}