/* Direction: dark, modern minimalist — UI designer portfolio */
:root {
  --color-bg: #08080a;
  --color-surface: #121215;
  --color-surface-hover: #1a1a1f;
  --color-border: #2a2a30;
  --color-text: #f0f0f2;
  --color-text-secondary: #9898a8;
  --color-text-muted: #6a6a7a;
  --color-primary: #6c5ce7;
  --color-primary-light: #a29bfe;
  --color-accent: #00cec9;
  --color-success: #00b894;
  --color-danger: #ff6b6b;
  --color-warning: #fdcb6e;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-soft: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 30px rgba(108,92,231,0.15);
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease-out;
  --transition-slow: 400ms ease-out;
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --max-width: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--color-primary); color: #fff; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* Layout */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
section { padding: 100px 0; }

/* Header */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(8,8,10,0.85); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.header-logo { font-family: var(--font-heading); font-size: 1.25rem; font-weight: 700; color: var(--color-text); }
.header-logo span { color: var(--color-primary); }
.nav { display: flex; gap: 32px; align-items: center; }
.nav a {
  font-size: 0.9rem; color: var(--color-text-secondary);
  transition: color var(--transition-fast); position: relative;
  padding: 4px 0;
}
.nav a:hover, .nav a.active { color: var(--color-text); }
.nav a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--color-primary); transition: width var(--transition-base);
}
.nav a:hover::after, .nav a.active::after { width: 100%; }

/* Mobile menu */
.menu-toggle { display: none; background: none; border: none; color: var(--color-text); cursor: pointer; padding: 8px; }
.menu-toggle svg { width: 24px; height: 24px; }

/* Hero */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding-top: 64px;
}
.hero::before {
  content: ''; position: absolute; top: -200px; right: -200px;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(108,92,231,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 720px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: var(--radius-full);
  background: rgba(108,92,231,0.1); border: 1px solid rgba(108,92,231,0.2);
  font-size: 0.8rem; color: var(--color-primary-light);
  margin-bottom: 24px; font-weight: 500;
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero h1 {
  font-family: var(--font-heading); font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 20px;
}
.hero h1 .accent { color: var(--color-primary-light); }
.hero-subtitle { font-size: 1.15rem; color: var(--color-text-secondary); max-width: 540px; margin-bottom: 36px; line-height: 1.7; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: var(--radius-md); font-weight: 600;
  font-size: 0.95rem; cursor: pointer; transition: all var(--transition-base);
  border: none; min-height: 44px; font-family: inherit;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-light); box-shadow: var(--shadow-glow); }
.btn-secondary { background: transparent; color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { border-color: var(--color-text-secondary); background: var(--color-surface); }

/* Section headings */
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--color-primary-light); margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-heading); font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700; letter-spacing: -0.02em; margin-bottom: 12px;
}
.section-desc { color: var(--color-text-secondary); max-width: 560px; font-size: 1rem; line-height: 1.7; }

/* Gallery */
.gallery { padding: 100px 0; }
.gallery-header { margin-bottom: 48px; }
.gallery-filters { display: flex; gap: 8px; margin-bottom: 32px; flex-wrap: wrap; }
.filter-btn {
  padding: 8px 20px; border-radius: var(--radius-full); font-size: 0.85rem;
  font-weight: 500; cursor: pointer; border: 1px solid var(--color-border);
  background: transparent; color: var(--color-text-secondary); transition: all var(--transition-fast);
  font-family: inherit; min-height: 44px;
}
.filter-btn:hover { border-color: var(--color-text-secondary); color: var(--color-text); }
.filter-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 24px; }
.gallery-card {
  border-radius: var(--radius-lg); overflow: hidden; background: var(--color-surface);
  border: 1px solid var(--color-border); transition: all var(--transition-base); cursor: pointer;
}
.gallery-card:hover { border-color: var(--color-primary); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.gallery-card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.gallery-card-body { padding: 20px; }
.gallery-card-body h3 { font-family: var(--font-heading); font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; }
.gallery-card-body p { font-size: 0.85rem; color: var(--color-text-secondary); line-height: 1.5; }
.gallery-card-tags { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.tag {
  padding: 3px 10px; border-radius: var(--radius-full); font-size: 0.72rem;
  background: rgba(108,92,231,0.1); color: var(--color-primary-light); font-weight: 500;
}
.gallery-empty { text-align: center; padding: 60px 0; color: var(--color-text-muted); }

/* Contact */
.contact { padding: 100px 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.contact-info h3 { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 600; margin-bottom: 16px; }
.contact-info p { color: var(--color-text-secondary); margin-bottom: 32px; line-height: 1.7; }
.contact-details { display: flex; flex-direction: column; gap: 20px; }
.contact-detail {
  display: flex; align-items: center; gap: 14px;
  color: var(--color-text-secondary); font-size: 0.95rem;
}
.contact-detail svg { width: 20px; height: 20px; color: var(--color-primary-light); flex-shrink: 0; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 500; color: var(--color-text-secondary); margin-bottom: 6px; }
.form-group input, .form-group textarea {
  width: 100%; padding: 12px 16px; border-radius: var(--radius-md);
  border: 1px solid var(--color-border); background: var(--color-surface);
  color: var(--color-text); font-family: inherit; font-size: 0.95rem;
  transition: border-color var(--transition-fast); min-height: 44px;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--color-primary); }
.form-group input.error, .form-group textarea.error { border-color: var(--color-danger); }
.form-group .error-text { color: var(--color-danger); font-size: 0.78rem; margin-top: 4px; display: none; }
.form-group .error-text.visible { display: block; }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-success {
  padding: 16px; border-radius: var(--radius-md); background: rgba(0,184,148,0.1);
  border: 1px solid rgba(0,184,148,0.2); color: var(--color-success);
  font-size: 0.9rem; text-align: center; display: none;
}
.form-success.visible { display: block; }

/* Footer */
.footer { padding: 40px 0; border-top: 1px solid var(--color-border); }
.footer .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.footer-copy { color: var(--color-text-muted); font-size: 0.8rem; }
.social-links { display: flex; gap: 16px; }
.social-links a {
  width: 40px; height: 40px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  background: var(--color-surface); border: 1px solid var(--color-border);
  transition: all var(--transition-fast); color: var(--color-text-secondary);
}
.social-links a:hover { border-color: var(--color-primary); color: var(--color-primary-light); }
.social-links svg { width: 18px; height: 18px; }

/* Responsive */
@media (max-width: 768px) {
  .nav { display: none; }
  .nav.open {
    display: flex; flex-direction: column;
    position: absolute; top: 64px; left: 0; right: 0;
    background: rgba(8,8,10,0.97); backdrop-filter: blur(12px);
    padding: 24px; gap: 20px; border-bottom: 1px solid var(--color-border);
  }
  .menu-toggle { display: block; }
  .gallery-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  section { padding: 60px 0; }
}
@media (max-width: 375px) {
  .hero h1 { font-size: 2rem; }
  .gallery-grid { grid-template-columns: 1fr; }
}

/* Scroll reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}