:root {
  --bg: #050814;
  --bg-alt: #070b1c;
  --bg-elevated: #0c1024;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --text: #f5f5ff;
  --text-muted: #9fa4c7;
  --accent: #4f46e5;
  --accent-soft: rgba(79, 70, 229, 0.14);
  --accent-strong: #818cf8;
  --danger: #f97373;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-soft: 0 18px 55px rgba(0, 0, 0, 0.6);
  --shadow-subtle: 0 1px 0 rgba(255, 255, 255, 0.05);
  --max-width: 1120px;
}

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

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top left, #111827 0, #020617 40%, #020617 100%);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Top navigation */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: linear-gradient(to bottom, rgba(3, 7, 18, 0.95), rgba(3, 7, 18, 0.7));
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 0, #eff6ff, #4f46e5 40%, #1e1b4b 100%);
  box-shadow: 0 12px 26px rgba(59, 130, 246, 0.6);
  font-size: 0.8rem;
}

.logo-text {
  font-size: 0.98rem;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  gap: 1.1rem;
  font-size: 0.88rem;
}

.nav-links a {
  padding: 0.35rem 0.5rem;
  border-radius: 999px;
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease;
}

.nav-links a:hover {
  color: var(--text);
  background-color: rgba(15, 23, 42, 0.9);
  border-color: rgba(148, 163, 184, 0.35);
}

/* Hero */
.hero {
  padding: 4rem 0 3rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.1fr);
  gap: 2.8rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.18rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.4), transparent 60%);
  color: var(--accent-strong);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

.hero h1 {
  margin: 0.85rem 0 0.75rem;
  font-size: 2.45rem;
  line-height: 1.18;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
  max-width: 34rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 1.7rem 0 1.1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  font-size: 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease,
    transform 0.12s ease;
}

.btn.primary {
  background: linear-gradient(135deg, #4f46e5, #6366f1);
  color: white;
  box-shadow: 0 12px 30px rgba(79, 70, 229, 0.5);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(79, 70, 229, 0.65);
}

.btn.ghost {
  background-color: rgba(15, 23, 42, 0.85);
  border-color: rgba(148, 163, 184, 0.5);
  color: var(--text);
}

.btn.ghost:hover {
  background-color: rgba(15, 23, 42, 1);
  border-color: rgba(148, 163, 184, 0.75);
}

.hero-meta {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.hero-meta span::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: radial-gradient(circle at center, #a5b4fc 0, #4f46e5 60%);
}

.hero-panel {
  display: flex;
  align-items: stretch;
}

.hero-card {
  width: 100%;
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.35rem 1.45rem;
  background: radial-gradient(circle at top left, #1e293b, #020617 70%);
  border: 1px solid rgba(148, 163, 184, 0.3);
  box-shadow: var(--shadow-soft);
}

.hero-card h2 {
  margin-top: 0;
  margin-bottom: 0.8rem;
  font-size: 1.05rem;
}

.hero-card ul {
  margin: 0;
  padding-left: 1.1rem;
  list-style: disc;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hero-card li + li {
  margin-top: 0.35rem;
}

/* Sections */
.section {
  padding: 3.5rem 0;
}

.section.alt {
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.98));
}

.section-header {
  margin-bottom: 1.8rem;
}

.section-header h2 {
  margin: 0 0 0.4rem;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}

.section-header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 32rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
  gap: 2rem;
  align-items: flex-start;
}

.about-highlights {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.12), rgba(15, 23, 42, 0.98));
  padding: 1.3rem 1.35rem;
}

.about-highlights h3 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: 1rem;
}

.about-highlights ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.about-highlights li + li {
  margin-top: 0.3rem;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.2rem;
}

.skill-card {
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: radial-gradient(circle at top left, rgba(30, 64, 175, 0.4), #020617);
  padding: 1.05rem 1.1rem;
}

.skill-card h3 {
  margin: 0 0 0.5rem;
  font-size: 0.98rem;
}

.skill-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.skill-card li + li {
  margin-top: 0.25rem;
}

/* Timeline / Experience */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem 1.4rem;
  align-items: flex-start;
}

.timeline-badge {
  margin-top: 0.2rem;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background-color: rgba(15, 23, 42, 0.95);
  color: var(--accent-strong);
}

.timeline-content {
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.08), rgba(15, 23, 42, 0.98));
  padding: 1.1rem 1.2rem 1.15rem;
}

.timeline-content h3 {
  margin: 0 0 0.25rem;
  font-size: 1.02rem;
}

.timeline-meta {
  margin: 0 0 0.55rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.timeline-content ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.timeline-content li + li {
  margin-top: 0.3rem;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}

.project-card {
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: radial-gradient(circle at top left, rgba(30, 64, 175, 0.3), #020617);
  padding: 1.05rem 1.1rem 1.15rem;
}

.project-card h3 {
  margin: 0 0 0.4rem;
  font-size: 0.98rem;
}

.project-card p {
  margin: 0 0 0.6rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.project-meta {
  margin: 0 0 0.7rem;
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.project-meta li + li {
  margin-top: 0.22rem;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
}

.project-links a {
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: var(--text-muted);
  background-color: rgba(15, 23, 42, 0.9);
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.project-links a:hover {
  color: var(--text);
  border-color: rgba(148, 163, 184, 0.8);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr);
  gap: 2rem;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.contact-list li + li {
  margin-top: 0.45rem;
}

.contact-list a {
  color: var(--accent-strong);
}

.contact-form {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.18), rgba(15, 23, 42, 0.98));
  padding: 1.2rem 1.3rem 1.3rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.8rem;
}

.form-row label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.form-row input,
.form-row textarea {
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background-color: rgba(15, 23, 42, 0.95);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  font-size: 0.88rem;
  outline: none;
  resize: vertical;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(79, 70, 229, 0.65);
}

.form-note {
  margin: 0 0 0.8rem;
  color: var(--text-muted);
  font-size: 0.78rem;
}

/* Footer */
.footer {
  padding: 1.7rem 0 2rem;
  border-top: 1px solid rgba(148, 163, 184, 0.28);
  background: rgba(3, 7, 18, 0.98);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer-note {
  opacity: 0.9;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-panel {
    order: -1;
  }

  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .nav-inner {
    gap: 0.75rem;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 3rem;
  }

  .section {
    padding: 2.6rem 0;
  }

  .grid-2 {
    grid-template-columns: minmax(0, 1fr);
  }

  .skills-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .projects-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .timeline-item {
    grid-template-columns: minmax(0, 1fr);
  }
}