/* Professional portfolio theme */

:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-elevated: #334155;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --border: #334155;
  --border-light: #475569;
  --font-heading: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --max-width: 72rem;
  --radius: 6px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  position: relative;
  min-height: 100vh;
}

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

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

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md);
}

.nav-logo {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text);
}

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

.nav-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: none;
  border: 1px solid var(--border-light);
  cursor: pointer;
  border-radius: var(--radius);
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-muted);
}

/* Hero */
.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(80px + var(--space-lg)) var(--space-md) var(--space-lg);
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.hero-text {
  flex: 1;
  min-width: 16rem;
}

.hero-photo {
  width: 10rem;
  height: 10rem;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--border-light);
  flex-shrink: 0;
}

@media (max-width: 35rem) {
  .hero-content {
    flex-direction: column;
  }

  .hero-photo {
    order: -1;
  }
}

.hero-greeting {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
}

.hero-name {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  margin: 0 0 var(--space-xs);
  letter-spacing: -0.03em;
  color: var(--text);
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
  font-weight: 500;
}

.hero-bio {
  max-width: 32rem;
  margin-bottom: var(--space-lg);
  color: var(--text-muted);
  font-size: 0.95rem;
}

.hero-cta {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}

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

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

.btn-secondary:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

/* Sections */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  position: relative;
  z-index: 1;
}

.section-title {
  font-size: clamp(1.5rem, 3.5vw, 1.875rem);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
  color: var(--text);
}

/* About */
.about {
  padding: var(--space-2xl) 0;
}

.about-grid {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 48rem) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.about-content p {
  margin-bottom: var(--space-md);
  color: var(--text-muted);
}

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

.about-skills h3 {
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  list-style: none;
  margin: 0;
  padding: 0;
}

.skill-tags li {
  padding: 0.35rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.skill-tags li:hover {
  border-color: var(--border-light);
  color: var(--text);
}

/* Projects */
.projects {
  padding: var(--space-2xl) 0;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
}

.project-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.project-card {
  padding: var(--space-lg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  border-color: var(--border-light);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.project-card-with-img {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.project-card-with-img .project-info {
  flex: 1;
  min-width: 0;
}

.project-card-thumb {
  width: 8rem;
  height: 8rem;
  object-fit: cover;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.project-card-thumb-wide {
  width: 10rem;
  height: 5rem;
  object-fit: contain;
  background: var(--bg-card);
}

.project-card-thumb-contain {
  object-fit: contain;
  background: var(--bg-card);
}

@media (max-width: 35rem) {
  .project-card-with-img {
    flex-direction: column;
    align-items: stretch;
  }

  .project-card-thumb {
    width: 100%;
    height: 10rem;
    order: -1;
    object-fit: cover;
  }

  .project-card-thumb-wide {
    height: 6rem;
    object-fit: contain;
  }

  .project-card-thumb-contain {
    object-fit: contain;
  }
}

.project-info h3 {
  font-size: 1.125rem;
  margin: 0 0 var(--space-xs);
  color: var(--text);
  font-weight: 600;
}

.project-info p {
  margin: 0 0 var(--space-sm);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.project-links {
  display: flex;
  gap: var(--space-md);
}

.project-links a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* Contact */
.contact {
  padding: var(--space-2xl) 0;
  position: relative;
  z-index: 1;
}

.contact-intro {
  margin-bottom: var(--space-lg);
  color: var(--text-muted);
  max-width: 28rem;
}

.contact-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.contact-links a {
  font-weight: 500;
  padding: 0.4rem 0;
  border-bottom: 1px solid transparent;
}

.contact-links a:hover {
  border-bottom-color: var(--accent);
}

/* Footer */
.site-footer {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
}

.site-footer p {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Project detail page */
.project-page {
  padding: calc(80px + var(--space-lg)) var(--space-md) var(--space-2xl);
  position: relative;
  z-index: 1;
}

.project-page-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.project-back-link {
  display: inline-block;
  margin-bottom: var(--space-lg);
  font-size: 0.9rem;
  font-weight: 500;
}

.project-page-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin: 0 0 var(--space-lg);
  letter-spacing: -0.02em;
}

.project-page-content {
  color: var(--text-muted);
}

.project-lead {
  font-size: 1.0625rem;
  color: var(--text);
  margin-bottom: var(--space-xl);
  line-height: 1.65;
}

.project-page-content h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin: var(--space-xl) 0 var(--space-sm);
}

.project-page-content h2:first-of-type {
  margin-top: 0;
}

.project-page-content p {
  margin: 0 0 var(--space-md);
}

.project-media {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.project-video {
  max-width: 100%;
  width: 36rem;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.project-gallery {
  display: grid;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  max-width: 36rem;
}

.project-gallery img,
.project-gallery video {
  max-width: 100%;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
}

@media (min-width: 40rem) {
  .project-gallery {
    grid-template-columns: 1fr 1fr;
  }
}

/* Mobile menu */
@media (max-width: 47.9375rem) {
  .nav-links {
    position: fixed;
    top: 57px;
    right: 0;
    left: 0;
    flex-direction: column;
    gap: 0;
    padding: var(--space-md);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  }

  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links li {
    border-bottom: 1px solid var(--border);
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .nav-links a {
    display: block;
    padding: var(--space-sm);
  }

  .nav-toggle {
    display: flex;
  }
}