/* ─────────────────────────────────────────
   techstack.css — Tech Stack Page
───────────────────────────────────────── */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background: #ffffff;
  color: #111113;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.page-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

/* ── HEADER ── */
.page-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.back-btn {
  font-size: 0.82rem;
  font-weight: 500;
  color: #555;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s;
}

.back-btn:hover {
  color: #111;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: #111113;
  letter-spacing: -0.02em;
}

/* ── SECTION ── */
.stack-section {
  margin-bottom: 2rem;
}

.section-heading {
  font-size: 1rem;
  font-weight: 700;
  color: #111113;
  margin-bottom: 0.875rem;
  letter-spacing: -0.01em;
}

/* ── TAG ROW ── */
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  font-size: 0.8rem;
  font-weight: 400;
  color: #111113;
  background: #ffffff;
  border: 1px solid #d0d0d8;
  border-radius: 5px;
  padding: 0.3rem 0.7rem;
  cursor: default;
  transition: background 0.12s, border-color 0.12s;
}

.tag:hover {
  background: #f5f5f7;
  border-color: #b0b0bc;
}