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

:root {
  --color-bg: #1a0b2e;
  --color-surface: #2d1b4e;
  --color-border: #4a3a5f;
  --color-accent: #c084fc;
  --color-accent-2: #d8b4fe;
  --color-text: #e2e8f0;
  --color-muted: #94a3b8;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'Fira Code', 'Cascadia Code', monospace;
  --radius: 0.75rem;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
}

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

a:hover {
  color: #7dd3fc;
}

/* ===== Layout ===== */
.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

section {
  padding: 5rem 0;
}

/* ===== Navigation ===== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

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

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

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

/* ===== Hero ===== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% -20%, rgba(56, 189, 248, 0.12), transparent),
              radial-gradient(ellipse 60% 50% at 80% 80%, rgba(129, 140, 248, 0.1), transparent);
  pointer-events: none;
}

.hero-content {
  position: relative;
  padding-top: 4rem;
}

.hero-tag {
  display: inline-block;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero-name span {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--color-muted);
  margin-bottom: 2rem;
  max-width: 560px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: #0f172a;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(56, 189, 248, 0.3);
  color: #0f172a;
}

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

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

/* ===== Section Headings ===== */
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text p {
  color: var(--color-muted);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

.about-text p strong {
  color: var(--color-text);
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.stat-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: border-color var(--transition);
}

.stat-card:hover {
  border-color: var(--color-accent);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.skill-category {
  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);
}

.skill-category:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.skill-category-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

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

.skill-tag {
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  color: var(--color-text);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
}

/* ===== Projects ===== */
#projects {
  background: var(--color-surface);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.project-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.project-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.project-icon {
  font-size: 2rem;
  line-height: 1;
}

.project-links {
  display: flex;
  gap: 0.75rem;
}

.project-links a {
  color: var(--color-muted);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: color var(--transition);
}

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

.project-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
}

.project-desc {
  color: var(--color-muted);
  font-size: 0.95rem;
  flex: 1;
}

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

.stack-tag {
  background: rgba(129, 140, 248, 0.08);
  border: 1px solid rgba(129, 140, 248, 0.2);
  color: var(--color-accent-2);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(192, 132, 252, 0.1);
  border: 1px solid rgba(192, 132, 252, 0.3);
  color: var(--color-accent);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  animation: pulse 2s ease-in-out infinite;
}

.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    border-color: rgba(192, 132, 252, 0.3);
  }
  50% {
    border-color: rgba(192, 132, 252, 0.6);
  }
}

@keyframes blink {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

.collaborative-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: #4cc9f0;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

.collaborative-badge::before {
  content: '🤝';
  font-size: 0.75rem;
}

/* ===== Contact ===== */
#contact {
  text-align: center;
}

.contact-inner {
  max-width: 580px;
  margin: 0 auto;
}

.contact-inner p {
  color: var(--color-muted);
  margin-bottom: 2.5rem;
  font-size: 1.05rem;
}

.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.contact-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* ===== Footer ===== */
footer {
  text-align: center;
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.85rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-links {
    gap: 1.25rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-cta {
    flex-direction: column;
    align-items: flex-start;
  }

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

@media (max-width: 480px) {
  .nav-links {
    display: none;
  }
}