/* Chakshyn Atelier Tools — website stylesheet.
   Prefix: --csn-*, .csn-*  (terracotta on deep mocha, editorial-magazine layout). */
:root {
  --csn-bg: #1A0F0A;
  --csn-bg-soft: #221610;
  --csn-surface: #2A1810;
  --csn-surface-alt: #33201A;
  --csn-text: #FBF5EE;
  --csn-text-soft: #E5D7C5;
  --csn-muted: #A89279;
  --csn-primary: #D97757;
  --csn-primary-deep: #B85E3F;
  --csn-cream: #F5E6D3;
  --csn-border: rgba(217, 119, 87, 0.22);
  --csn-border-soft: rgba(245, 230, 211, 0.10);
  --csn-divider: rgba(245, 230, 211, 0.14);
  --csn-shadow: 0 18px 48px rgba(0, 0, 0, 0.55);
  --csn-radius-sm: 10px;
  --csn-radius: 18px;
  --csn-radius-lg: 28px;
  --csn-max: 1180px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--csn-bg);
  color: var(--csn-text);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px; line-height: 1.65;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--csn-primary); text-decoration: none; }
a:hover { color: var(--csn-cream); }

h1, h2, h3 { font-family: 'Playfair Display', Georgia, 'Times New Roman', serif; letter-spacing: -0.5px; color: var(--csn-text); }
h1 { font-weight: 800; }
h2 { font-weight: 700; font-size: 2.1rem; margin: 0 0 0.4rem; }
h3 { font-weight: 700; font-size: 1.3rem; margin: 0 0 0.4rem; }

/* --- Topbar --- */
.csn-topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(26, 15, 10, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--csn-border-soft);
}
.csn-topbar__inner {
  max-width: var(--csn-max); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 28px;
}
.csn-brand { display: flex; align-items: center; gap: 12px; font-family: 'Playfair Display', serif; font-weight: 700; font-size: 1.25rem; color: var(--csn-cream); }
.csn-brand__mark {
  width: 38px; height: 38px;
  border: 1.5px solid var(--csn-primary);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
}
.csn-brand__mark svg { width: 22px; height: 22px; stroke: var(--csn-primary); fill: none; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }

.csn-nav { display: flex; gap: 24px; }
.csn-nav a { color: var(--csn-text-soft); font-size: 0.93rem; font-weight: 500; letter-spacing: 0.2px; }
.csn-nav a:hover { color: var(--csn-primary); }

@media (max-width: 720px) {
  .csn-nav { display: none; }
}

/* --- Hero --- */
.csn-hero {
  max-width: var(--csn-max); margin: 0 auto;
  padding: 76px 28px 60px;
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px;
  align-items: center;
}
@media (max-width: 880px) { .csn-hero { grid-template-columns: 1fr; padding-top: 48px; } }

.csn-hero__eyebrow {
  display: inline-block;
  color: var(--csn-primary);
  font-size: 0.85rem; letter-spacing: 0.18em; text-transform: uppercase;
  margin-bottom: 18px; font-weight: 600;
}
.csn-hero h1 {
  font-size: clamp(2.4rem, 4.2vw, 3.6rem);
  line-height: 1.08;
  margin: 0 0 24px;
}
.csn-hero h1 em { font-style: italic; color: var(--csn-primary); }
.csn-hero__lede {
  color: var(--csn-text-soft);
  font-size: 1.1rem; line-height: 1.7;
  max-width: 560px;
}
.csn-hero__cta { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }
.csn-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 12px;
  font-weight: 600; font-size: 0.95rem; letter-spacing: 0.2px;
  border: 1px solid var(--csn-border);
  background: transparent; color: var(--csn-text);
  cursor: pointer; transition: all 0.18s ease;
}
.csn-btn:hover { background: var(--csn-surface); color: var(--csn-cream); }
.csn-btn--primary {
  background: var(--csn-primary); color: var(--csn-bg);
  border-color: var(--csn-primary);
}
.csn-btn--primary:hover { background: var(--csn-cream); color: var(--csn-bg); }

.csn-hero__art {
  position: relative; padding: 24px;
  background: radial-gradient(circle at 50% 40%, rgba(217, 119, 87, 0.18) 0%, transparent 60%);
}
.csn-hero__art svg { width: 100%; height: auto; max-width: 360px; display: block; margin: 0 auto; }

.csn-stitch {
  display: block; width: 100%; height: 1px;
  background-image: linear-gradient(to right, var(--csn-divider) 60%, transparent 60%);
  background-size: 12px 1px; background-repeat: repeat-x;
  margin: 12px 0;
}

/* --- Sections common --- */
.csn-section {
  max-width: var(--csn-max); margin: 0 auto;
  padding: 64px 28px;
  border-top: 1px solid var(--csn-border-soft);
}
.csn-section__head {
  display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap;
  margin-bottom: 24px;
}
.csn-section__num {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--csn-primary); font-weight: 700;
}
.csn-section__lede {
  color: var(--csn-text-soft); font-size: 1.02rem; max-width: 720px;
  margin: 0 0 28px;
}

/* --- Services grid --- */
.csn-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.csn-card {
  background: var(--csn-surface);
  border: 1px solid var(--csn-border-soft);
  border-radius: var(--csn-radius);
  padding: 26px 22px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.csn-card:hover { transform: translateY(-3px); border-color: var(--csn-border); }
.csn-card__tag {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  background: rgba(217, 119, 87, 0.14); color: var(--csn-primary);
  font-size: 0.74rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 14px;
}
.csn-card h3 { font-size: 1.15rem; margin: 0 0 8px; }
.csn-card p { color: var(--csn-muted); font-size: 0.93rem; margin: 0; }

/* --- Tools (interactive) --- */
.csn-tool {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 28px;
  background: var(--csn-surface);
  border: 1px solid var(--csn-border-soft);
  border-radius: var(--csn-radius-lg);
  padding: 30px;
}
@media (max-width: 800px) { .csn-tool { grid-template-columns: 1fr; padding: 22px; } }

.csn-tool__form label {
  display: block; color: var(--csn-text-soft);
  font-size: 0.83rem; letter-spacing: 0.06em; margin: 14px 0 6px; font-weight: 500;
}
.csn-tool__form input,
.csn-tool__form select {
  width: 100%; padding: 12px 14px;
  background: var(--csn-bg-soft); color: var(--csn-text);
  border: 1px solid var(--csn-border-soft);
  border-radius: var(--csn-radius-sm);
  font-family: inherit; font-size: 0.95rem;
}
.csn-tool__form input:focus,
.csn-tool__form select:focus {
  outline: none; border-color: var(--csn-primary);
}
.csn-tool__actions { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }

.csn-tool__output {
  background: var(--csn-bg-soft);
  border: 1px solid var(--csn-border-soft);
  border-radius: var(--csn-radius);
  padding: 24px 22px;
}
.csn-tool__bignum {
  font-family: 'Playfair Display', serif;
  font-size: 2.4rem; font-weight: 800; color: var(--csn-primary);
  margin: 6px 0 2px;
}
.csn-tool__output dl { margin: 12px 0 0; display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; }
.csn-tool__output dt { color: var(--csn-muted); font-size: 0.85rem; }
.csn-tool__output dd { margin: 0; color: var(--csn-text); font-size: 0.95rem; font-weight: 500; }

.csn-saved {
  margin-top: 18px;
  background: var(--csn-bg-soft);
  border: 1px solid var(--csn-border-soft);
  border-radius: var(--csn-radius-sm);
  padding: 16px;
}
.csn-saved h4 { margin: 0 0 10px; color: var(--csn-text); font-size: 0.85rem; letter-spacing: 0.12em; text-transform: uppercase; font-family: 'Inter', sans-serif; }
.csn-saved__row { display: flex; justify-content: space-between; padding: 8px 0; border-top: 1px solid var(--csn-border-soft); font-size: 0.88rem; }
.csn-saved__row:first-of-type { border-top: none; }
.csn-saved__row button {
  background: transparent; border: none; color: var(--csn-muted);
  cursor: pointer; font-size: 0.88rem;
}
.csn-saved__row button:hover { color: var(--csn-primary); }

/* --- Size chart table --- */
.csn-table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
.csn-table th, .csn-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--csn-border-soft); }
.csn-table th { color: var(--csn-primary); font-family: 'Playfair Display', serif; font-weight: 700; font-size: 0.95rem; }
.csn-table tbody tr:hover { background: rgba(217, 119, 87, 0.05); cursor: pointer; }
.csn-table tbody tr.active { background: rgba(217, 119, 87, 0.12); }

/* --- Order log --- */
.csn-order__row {
  display: grid; grid-template-columns: 1fr 1.4fr auto auto;
  gap: 12px; padding: 12px 0; border-top: 1px solid var(--csn-border-soft); align-items: center;
}
.csn-order__row:first-child { border-top: none; }
.csn-chip { padding: 3px 10px; border-radius: 999px; font-size: 0.74rem; font-weight: 700; letter-spacing: 0.08em; }
.csn-chip--new { background: rgba(217, 119, 87, 0.18); color: var(--csn-primary); }
.csn-chip--done { background: rgba(245, 230, 211, 0.12); color: var(--csn-cream); }

/* --- Process timeline --- */
.csn-timeline { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 18px; }
.csn-step { background: var(--csn-surface); border: 1px solid var(--csn-border-soft); border-radius: var(--csn-radius); padding: 22px; position: relative; }
.csn-step__num {
  font-family: 'Playfair Display', serif; font-size: 2.4rem; font-weight: 800;
  color: var(--csn-primary); line-height: 1; margin-bottom: 8px;
}
.csn-step h3 { margin: 0 0 6px; font-size: 1.05rem; }
.csn-step p { color: var(--csn-muted); font-size: 0.88rem; margin: 0; }

/* --- FAQ --- */
.csn-faq details {
  background: var(--csn-surface);
  border: 1px solid var(--csn-border-soft);
  border-radius: var(--csn-radius-sm);
  padding: 14px 20px; margin-bottom: 10px;
}
.csn-faq summary { font-weight: 600; cursor: pointer; color: var(--csn-text); list-style: none; }
.csn-faq summary::-webkit-details-marker { display: none; }
.csn-faq summary::before { content: '+ '; color: var(--csn-primary); font-weight: 700; }
.csn-faq details[open] summary::before { content: '– '; }
.csn-faq details p { color: var(--csn-muted); margin: 10px 0 0; font-size: 0.95rem; }

/* --- About / identity --- */
.csn-identity {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  background: var(--csn-surface);
  border: 1px solid var(--csn-border-soft);
  border-radius: var(--csn-radius);
  padding: 28px 26px;
}
.csn-identity__row dt { color: var(--csn-muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 4px; }
.csn-identity__row dd { color: var(--csn-text); font-size: 0.97rem; margin: 0; font-weight: 500; }

/* --- Footer --- */
.csn-footer {
  border-top: 1px solid var(--csn-border-soft);
  padding: 30px 28px;
  text-align: center;
  color: var(--csn-muted);
  font-size: 0.85rem;
}
.csn-footer a { color: var(--csn-primary); }

/* --- Anchor offset (sticky topbar) --- */
section[id] { scroll-margin-top: 80px; }