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

:root {
  --bg: #fafafa;
  --card: #ffffff;
  --text: #1a1a1a;
  --text2: #555;
  --accent: #2563eb;
  --accent2: #1d4ed8;
  --border: #e5e7eb;
  --green: #059669;
  --red: #dc2626;
  --tag-bg: #f0f4ff;
  --tag-text: #3b5998;
  --max-w: 1100px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Header */
.hero {
  text-align: center;
  padding: 60px 20px 40px;
  background: linear-gradient(135deg, #f8fafc 0%, #e8f0fe 100%);
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.hero .role {
  font-size: 1.15rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 16px;
}

.hero .desc {
  color: var(--text2);
  max-width: 600px;
  margin: 0 auto 24px;
  font-size: 1rem;
}

.contacts {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.contacts a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  transition: border-color 0.2s;
}

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

/* Skills */
.skills {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px 20px 16px;
}

.skills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.skill-badge {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text2);
}

/* Filter */
.filter-bar {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.filter-btn {
  border: 1px solid var(--border);
  background: var(--card);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text2);
}

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

/* Projects Grid */
.projects {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: box-shadow 0.2s;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.project-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.project-card.no-img {
  grid-template-columns: 1fr;
}

/* Carousel */
.carousel {
  position: relative;
  overflow: hidden;
  background: #fff;
  max-height: 350px;
}

.carousel-img {
  width: 100%;
  height: 100%;
  min-height: 220px;
  max-height: 350px;
  object-fit: contain;
  
  display: block;
  transition: opacity 0.2s;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.4);
  color: #fff;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.carousel:hover .carousel-btn { opacity: 1; }
.carousel-prev { left: 8px; }
.carousel-next { right: 8px; }
.carousel-btn:hover { background: rgba(0,0,0,0.7); }

.carousel-dots {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  transition: background 0.2s;
}

.dot.active { background: #fff; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.lightbox.open { opacity: 1; pointer-events: all; }

.lightbox-img {
  max-width: min(90vw, 1200px);
  max-height: 85vh;
  object-fit: contain;
  border-radius: 8px;
  user-select: none;
  position: relative;
  z-index: 1001;
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.lightbox-close:hover { opacity: 1; }

.lightbox-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.15);
  border: none;
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 1.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.lightbox-btn:hover { background: rgba(255,255,255,0.3); }
.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

.lightbox-counter {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
}

.project-body {
  padding: 24px;
}

.project-body h3 {
  font-size: 1.25rem;
  margin-bottom: 2px;
}

.project-body .subtitle {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 12px;
}

.project-body .desc {
  color: var(--text2);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

/* Before/After */
.ba {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.ba-item {
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.5;
}

.ba-before {
  background: #fef2f2;
  border-left: 3px solid var(--red);
}

.ba-after {
  background: #f0fdf4;
  border-left: 3px solid var(--green);
}

.ba-label {
  font-weight: 600;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
  display: block;
}

.ba-before .ba-label { color: var(--red); }
.ba-after .ba-label { color: var(--green); }

/* Tags */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* Footer */
.footer {
  text-align: center;
  padding: 40px 20px;
  color: var(--text2);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

/* Counter */
.counter {
  text-align: center;
  padding: 8px;
  color: var(--text2);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 1.8rem; }
  .project-card { grid-template-columns: 1fr; }
  .project-img { min-height: 180px; max-height: 220px; }
  .ba { grid-template-columns: 1fr; }
  .projects { padding: 12px; gap: 16px; }
  .project-body { padding: 16px; }
}