/* ============================================================
   sections.css
   Shared layout for section wrappers, headers, dividers, cards,
   and the various content grids (intro, projects, capabilities,
   stack, lab, approach, about-me stats, interests).
   ============================================================ */

section { padding: 100px 32px; position: relative; }
.section-container { max-width: 1200px; margin: 0 auto; }
.section-header { margin-bottom: 64px; }
.section-label {
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--accent);
  text-transform: uppercase; letter-spacing: 3px; margin-bottom: 12px;
  display: flex; align-items: center; gap: 12px;
}
.section-label::before {
  content: ''; display: block; width: 32px; height: 1px;
  background: var(--accent); box-shadow: 0 0 8px var(--accent-glow);
}
.section-header h2 {
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff, var(--text-dim));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-header p { max-width: 600px; font-size: 1.05rem; }

.section-divider {
  height: 1px; max-width: 1200px; margin: 0 auto;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* --- Intro (About) --- */
.intro-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.intro-text p { font-size: 1.1rem; margin-bottom: 20px; line-height: 1.8; }
.intro-text strong { color: var(--text); }
.intro-visual {
  position: relative; height: 400px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-elevated); overflow: hidden;
}
.intro-visual::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 30%, var(--accent-dim), transparent 60%);
}
.circuit-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(90deg, var(--border) 1px, transparent 1px),
    linear-gradient(var(--border) 1px, transparent 1px);
  background-size: 40px 40px; opacity: 0.5;
}

/* --- Generic card --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  position: relative; overflow: hidden;
}
.card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: var(--transition);
}
.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 40px rgba(0, 240, 255, 0.05);
}
.card:hover::before { opacity: 1; }
.card-icon {
  width: 48px; height: 48px; border-radius: 10px;
  background: var(--accent-dim); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; font-size: 1.3rem;
  box-shadow: 0 0 20px var(--accent-glow);
}
.card h3 { margin-bottom: 12px; color: var(--text); }
.card p { font-size: 0.95rem; line-height: 1.6; }

/* --- Projects --- */
.projects-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}
.project-card .tech-tags {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px;
}
.tech-tag {
  padding: 4px 12px; border-radius: 6px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--border);
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--accent); text-transform: uppercase; letter-spacing: 1px;
}

/* --- Capabilities --- */
.capabilities-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

/* --- Stack --- */
.stack-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.stack-category h4 {
  font-family: var(--font-mono); font-size: 0.85rem;
  color: var(--accent); text-transform: uppercase; letter-spacing: 2px;
  margin-bottom: 16px; padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.stack-items {
  display: flex; flex-wrap: wrap; gap: 10px;
}
.stack-item {
  padding: 8px 16px; border-radius: 8px;
  background: var(--bg-elevated); border: 1px solid var(--border);
  font-size: 0.9rem; color: var(--text-dim); transition: var(--transition);
}
.stack-item:hover {
  border-color: var(--accent); color: var(--text);
  background: var(--accent-dim); box-shadow: 0 0 15px var(--accent-glow);
}

/* --- Lab feature callout --- */
.lab-feature {
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 48px; text-align: center;
  background: linear-gradient(180deg, var(--bg-elevated), var(--bg));
  position: relative; overflow: hidden;
}
.lab-feature::before {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(circle, var(--accent-dim), transparent 70%);
  opacity: 0.3; pointer-events: none;
}
.lab-feature h3 {
  font-size: 1.8rem; margin-bottom: 16px;
  background: linear-gradient(135deg, #fff, var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.lab-feature p { max-width: 700px; margin: 0 auto; font-size: 1.1rem; }

/* --- Approach (numbered steps) --- */
.approach-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.approach-card { text-align: center; padding: 32px 24px; }
.approach-number {
  font-family: var(--font-mono); font-size: 2.5rem; font-weight: 700;
  color: var(--accent); opacity: 0.3; line-height: 1;
  margin-bottom: 16px; text-shadow: 0 0 20px var(--accent-glow);
}

/* --- About me stats --- */
.about-grid {
  display: grid; grid-template-columns: 1fr 1.5fr; gap: 64px; align-items: start;
}
.about-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.stat-box {
  padding: 24px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--bg-elevated);
  text-align: center;
}
.stat-number {
  font-family: var(--font-mono); font-size: 2rem; font-weight: 600;
  color: var(--accent); text-shadow: 0 0 15px var(--accent-glow);
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: 1px; }

/* --- Interests --- */
.interests-grid {
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: center;
}
.interest-tag {
  padding: 12px 24px; border-radius: 100px;
  border: 1px solid var(--border); background: var(--bg-elevated);
  font-size: 0.95rem; color: var(--text-dim); transition: var(--transition);
  cursor: default;
}
.interest-tag:hover {
  border-color: var(--accent); color: var(--accent);
  background: var(--accent-dim); transform: translateY(-2px);
  box-shadow: 0 0 20px var(--accent-glow);
}