/* Lincoln theme & global styles */
:root {
  --navy: #00205b;
  --orange: #ff6a13;
  --orange-soft: #ffb27a;
  --bg-dark: #020616;
  --bg-light: #f5f5fb;
  --card-bg: #ffffff;
  --text-main: #0b1020;
  --text-muted: #5f6680;
  --radius-lg: 18px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.18);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #06122f 0, #020616 50%, #02020a 100%);
  color: var(--text-main);
}

/* Header / nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: linear-gradient(
      to bottom,
      rgba(2, 6, 22, 0.92),
      rgba(2, 6, 22, 0.88),
      transparent
  );
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.6rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #e5e7f2;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: 0.95rem;
  text-transform: uppercase;
}

#nav-menu {
  display: flex;
  gap: 1.25rem;
}

#nav-menu a {
  color: #e5e7f2;
  text-decoration: none;
  font-size: 0.9rem;
  opacity: 0.85;
}

#nav-menu a:hover {
  opacity: 1;
  color: var(--orange-soft);
}

.nav-toggle {
  display: none;
  border: none;
  background: transparent;
  font-size: 1.35rem;
  color: #e5e7f2;
  cursor: pointer;
}

/* Sections */
.section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 3.5rem 1.25rem;
  color: #e5e7f2;
}

.section.alt {
  background: radial-gradient(circle at top, #04112e 0, #020616 60%);
  border-radius: 28px;
  margin-top: 2rem;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.5fr);
  gap: 2.5rem;
  align-items: center;
  padding-top: 4.5rem;
}

.hero-content h1 {
  font-size: clamp(2.4rem, 4vw, 3.1rem);
  margin-bottom: 0.4rem;
}

.hero-subtitle {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 34rem;
}

.eyebrow {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--orange-soft);
  margin-bottom: 0.4rem;
}

.hero-tags {
  margin: 1.5rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  background: rgba(9, 9, 11, 0.7);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  font-size: 0.75rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

/* Buttons */
.btn {
  border-radius: 999px;
  padding: 0.6rem 1.3rem;
  font-size: 0.9rem;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn.primary {
  background: linear-gradient(135deg, var(--orange) 0%, #ffb85a 100%);
  color: #111827;
  font-weight: 600;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}

.btn.primary:hover {
  filter: brightness(1.05);
}

.btn.ghost {
  border-color: rgba(148, 163, 184, 0.6);
  color: #e5e7f2;
  background: rgba(15, 23, 42, 0.7);
}

.btn.ghost:hover {
  border-color: var(--orange-soft);
}

.btn.small {
  padding: 0.45rem 1rem;
  font-size: 0.8rem;
}

/* Hero orbit visual */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-orbit {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle at top, #0b1120 0, #020617 60%);
  position: relative;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.35);
  overflow: hidden;
}

.orbit-circle {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px dashed rgba(148, 163, 184, 0.4);
  position: absolute;
  inset: 0;
  margin: auto;
}

.orbit-planet {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  position: absolute;
  animation: orbit 16s linear infinite;
}

.orbit-planet-1 {
  background: var(--orange);
  top: 8%;
  left: 50%;
}

.orbit-planet-2 {
  background: #38bdf8;
  bottom: 10%;
  left: 16%;
  animation-duration: 22s;
}

.orbit-planet-3 {
  background: #a855f7;
  bottom: 15%;
  right: 14%;
  animation-duration: 28s;
}

.hero-caption {
  font-size: 0.78rem;
  margin-top: 0.75rem;
  color: var(--text-muted);
  text-align: center;
}

/* Section header */
.section-header {
  text-align: left;
  margin-bottom: 1.75rem;
}

.section-header h2 {
  font-size: 1.6rem;
  margin-bottom: 0.25rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Cards & grids */
.card {
  background: rgba(15, 23, 42, 0.92);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.card p {
  font-size: 0.9rem;
  color: #e5e7f2;
}

.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.project-card .meta {
  font-size: 0.8rem;
  color: var(--orange-soft);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.highlight {
  font-weight: 600;
}

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

/* Lists */
.pill-list {
  list-style: none;
  padding: 0;
  margin: 0 0 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.pill-list li {
  background: rgba(15, 23, 42, 0.8);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
  font-size: 0.78rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.bullet-list {
  padding-left: 1.1rem;
  margin: 0;
  font-size: 0.9rem;
}

.bullet-list li {
  margin-bottom: 0.3rem;
}

/* Timeline */
.timeline {
  display: grid;
  gap: 1.3rem;
  border-left: 1px solid rgba(148, 163, 184, 0.4);
  padding-left: 1.2rem;
}

.timeline-item {
  position: relative;
}

.timeline-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--orange);
  border: 2px solid #020617;
  position: absolute;
  left: -1.68rem;
  top: 0.2rem;
}

.timeline-content h3 {
  margin: 0 0 0.1rem;
  font-size: 1rem;
}

.timeline-content .meta {
  font-size: 0.78rem;
  color: var(--orange-soft);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.35rem;
}

/* Quote card */
.quote-card {
  text-align: left;
}

#quote-text {
  font-style: italic;
  margin-bottom: 0.4rem;
}

.quote-author {
  font-size: 0.85rem;
  color: var(--orange-soft);
  margin-bottom: 0.9rem;
}

/* Footer */
.site-footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 1.8rem 1.25rem 2.4rem;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

/* Animation keyframes */
@keyframes orbit {
  from {
    transform: rotate(0deg) translateX(0);
  }
  to {
    transform: rotate(360deg) translateX(0);
  }
}

/* Responsive */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  #nav-menu {
    position: absolute;
    top: 3rem;
    right: 1.25rem;
    background: rgba(15, 23, 42, 0.98);
    padding: 0.7rem 0.9rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(148, 163, 184, 0.4);
    flex-direction: column;
    gap: 0.6rem;
    display: none;
  }

  #nav-menu.open {
    display: flex;
  }

  .nav-toggle {
    display: inline-block;
  }

  .section {
    padding: 3rem 1rem;
  }
}