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

:root {
  --color-bg: #0f1117;
  --color-surface: #1a1d27;
  --color-surface-alt: #212435;
  --color-border: #2a2d3e;
  --color-accent: #4f7ef8;
  --color-accent-dim: rgba(79, 126, 248, 0.12);
  --color-accent-glow: rgba(79, 126, 248, 0.25);
  --color-text: #e2e4ed;
  --color-text-muted: #8b8fa8;
  --color-text-faint: #555870;
  --color-tag-bg: rgba(79, 126, 248, 0.1);
  --color-tag-border: rgba(79, 126, 248, 0.3);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --radius: 10px;
  --radius-sm: 6px;
  --transition: 0.2s ease;
  --max-width: 900px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 600;
}

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

a:hover {
  opacity: 0.8;
}

/* ===== Layout ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== Navigation ===== */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

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

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

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--color-text);
  opacity: 1;
}

/* ===== Hero ===== */
.hero {
  padding: 6rem 0 4rem;
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-tag-border);
  padding: 0.35rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.75rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.25rem);
  font-weight: 700;
  color: var(--color-text);
  max-width: 680px;
  margin: 0 auto 1.25rem;
}

.hero h1 em {
  font-style: normal;
  color: var(--color-accent);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  transition: opacity var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 24px var(--color-accent-glow);
}

.hero-cta:hover {
  opacity: 0.9;
  box-shadow: 0 0 36px var(--color-accent-glow);
}

/* ===== Section ===== */
section {
  padding: 5rem 0;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  color: var(--color-text);
  margin-bottom: 1rem;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin-bottom: 3rem;
}

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
}

/* ===== About ===== */
#about {
  background: var(--color-surface);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 700px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 1.1rem;
  font-size: 0.975rem;
}

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

.about-text strong {
  color: var(--color-text);
  font-weight: 600;
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.highlight-card {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  transition: border-color var(--transition);
}

.highlight-card:hover {
  border-color: rgba(79, 126, 248, 0.4);
}

.highlight-card .icon {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.highlight-card h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.highlight-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ===== Journey / Timeline ===== */
.journey-section {
  margin-top: 3.5rem;
}

.journey-section h3 {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--color-border);
  padding-left: 1.5rem;
  margin-left: 0.25rem;
}

.timeline-item {
  position: relative;
  padding-bottom: 1.5rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.625rem;
  top: 0.45rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-role {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}

.timeline-context {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}

/* ===== Skills / Tags ===== */
.skills-section {
  margin-top: 3rem;
}

.skills-group {
  margin-bottom: 1.5rem;
}

.skills-group-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 0.6rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  background: var(--color-tag-bg);
  border: 1px solid var(--color-tag-border);
  color: var(--color-accent);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.tag.neutral {
  background: var(--color-surface-alt);
  border-color: var(--color-border);
  color: var(--color-text-muted);
}

/* ===== Services ===== */
#services {
  background: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  border-color: rgba(79, 126, 248, 0.4);
  transform: translateY(-2px);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card.wip {
  opacity: 0.5;
  cursor: default;
}

.service-card.wip:hover {
  border-color: var(--color-border);
  transform: none;
}

.service-card.wip::before {
  display: none;
}

.service-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.service-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.wip-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.65rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
}

/* ===== WIP Banner ===== */
.wip-banner {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-top: 1rem;
}

.wip-banner-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.wip-banner h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.wip-banner p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ===== CTA / Contact ===== */
#contact {
  background: var(--color-surface);
  text-align: center;
}

.contact-card {
  max-width: 520px;
  margin: 0 auto;
}

.contact-card p {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  font-size: 1rem;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.8rem 2rem;
  border-radius: var(--radius-sm);
  transition: opacity var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 24px var(--color-accent-glow);
}

.contact-btn:hover {
  opacity: 0.9;
  color: #fff;
  box-shadow: 0 0 36px var(--color-accent-glow);
}

/* ===== Footer ===== */
footer {
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

footer p {
  font-size: 0.8rem;
  color: var(--color-text-faint);
}