/*
 * Kintsugi / Wabi-Modern — Components
 *
 * Reusable utility classes: seam divider, eyebrow, sumi CTA, paper grain.
 * Consumes tokens.css + typography.css.
 */

/* ── Container ─────────────────────────────────────────── */
.kin-container {
  max-width: var(--kin-container-max);
  margin: 0 auto;
  padding-left: var(--kin-container-px);
  padding-right: var(--kin-container-px);
}

@media (min-width: 768px) {
  .kin-container {
    padding-left: var(--kin-container-px-lg);
    padding-right: var(--kin-container-px-lg);
  }
}

/* ── Section rhythm ────────────────────────────────────── */
.kin-section {
  position: relative;
  padding-top: var(--kin-section-py);
  padding-bottom: var(--kin-section-py);
}

@media (min-width: 768px) {
  .kin-section { padding-top: var(--kin-section-py-lg); padding-bottom: var(--kin-section-py-lg); }
}

.kin-section--tight {
  padding-top: var(--kin-section-py-sm);
  padding-bottom: var(--kin-section-py-sm);
}

.kin-section--surface { background: var(--kin-bg-surface); }
.kin-section--sumi    { background: var(--kin-bg-sumi); color: var(--kin-text-on-sumi); }
.kin-section--sumi h1,
.kin-section--sumi h2,
.kin-section--sumi h3 { color: var(--kin-text-on-sumi); }

/* ── Eyebrow (mono label / section number) ─────────────── */
.kin-eyebrow {
  display: inline-block;
  font-family: var(--kin-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--kin-primary);
  margin: 0 0 1.25rem;
}

.kin-section--sumi .kin-eyebrow { color: var(--kin-primary); }

.kin-meta {
  font-family: var(--kin-font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--kin-text-subtle);
}

/* ── Seam divider ──────────────────────────────────────── */
/*
 * Thin hairline with a gold mini-segment at ~70% from the left, plus a
 * 5-point zig-zag mark at ~80%. Variants:
 *   .kin-seam              — full-width hairline (between major sections)
 *   .kin-seam--inline      — shorter (max 520px), under a hero headline
 *   .kin-seam--mark        — mark only, no rule (inline with small labels)
 *   .kin-seam--sumi        — dark-band tone
 */

.kin-seam {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  margin: 0;
  border: 0;
  height: 24px;
  overflow: visible;
}

.kin-seam::before {
  content: '';
  flex: 1 1 auto;
  height: 1px;
  background: rgb(17 15 13 / 18%);
  transform-origin: left;
}

.kin-seam::after {
  content: '';
  width: 14%;
  min-width: 48px;
  height: 1px;
  background: var(--kin-primary);
  margin-left: 0;
  transform-origin: left;
}

.kin-seam .kin-seam__mark {
  position: absolute;
  left: 80%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: var(--kin-primary);
  pointer-events: none;
}

.kin-seam--inline {
  max-width: 520px;
  margin-top: 1.25rem;
  margin-bottom: 1.25rem;
}

.kin-seam--mark {
  display: inline-flex;
  width: auto;
  height: auto;
  vertical-align: middle;
  color: var(--kin-primary);
}

.kin-seam--mark::before,
.kin-seam--mark::after { display: none; }

.kin-seam--sumi::before { background: var(--kin-border-sumi); }
.kin-seam--sumi::after  { background: var(--kin-primary); }

/* Draw-in animation */
@keyframes kinSeamDraw {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

@media (prefers-reduced-motion: no-preference) {
  .kin-seam.kin-seam--animate::before,
  .kin-seam.kin-seam--animate::after {
    animation: kinSeamDraw var(--kin-seam-duration) var(--kin-ease) both;
  }
  .kin-seam.kin-seam--animate::after {
    animation-delay: calc(var(--kin-seam-duration) * 0.6);
  }
}

/* ── Sumi CTA band ─────────────────────────────────────── */
.kin-cta-sumi {
  background: var(--kin-bg-sumi);
  color: var(--kin-text-on-sumi);
  padding-top: var(--kin-section-py);
  padding-bottom: var(--kin-section-py);
}

@media (min-width: 768px) {
  .kin-cta-sumi { padding-top: var(--kin-section-py-lg); padding-bottom: var(--kin-section-py-lg); }
}

.kin-cta-sumi h2 { color: var(--kin-text-on-sumi); }
.kin-cta-sumi p  { color: var(--kin-text-on-sumi); opacity: 0.82; }

.kin-button {
  display: inline-block;
  padding: 0.9rem 1.6rem;
  border: 1px solid var(--kin-primary);
  background: transparent;
  color: var(--kin-primary);
  font-family: var(--kin-font-body);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-radius: 0;
  cursor: pointer;
  transition: background 300ms var(--kin-ease), color 300ms var(--kin-ease);
}

.kin-button:hover,
.kin-button:focus-visible {
  background: var(--kin-primary);
  color: var(--kin-bg-sumi);
  outline: none;
}

.kin-cta-sumi .kin-button:hover,
.kin-cta-sumi .kin-button:focus-visible {
  color: var(--kin-bg-sumi);
}

/* ── Paper grain overlay ───────────────────────────────── */
.kin-paper-grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.03;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ── Grid (12-col with asymmetric ma) ──────────────────── */
.kin-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .kin-grid { gap: 4rem; }
}

@media (min-width: 1024px) {
  .kin-grid { gap: 6rem; }
}

/* Content placement helpers */
.kin-col-hero    { grid-column: 1 / -1; }
.kin-col-split-l { grid-column: 1 / -1; }
.kin-col-split-r { grid-column: 1 / -1; }

@media (min-width: 768px) {
  .kin-col-hero    { grid-column: 2 / span 6; }  /* cols 2–7, cols 8–12 empty */
  .kin-col-split-l { grid-column: 1 / span 7; }
  .kin-col-split-r { grid-column: 8 / span 5; }
  .kin-col-wide    { grid-column: 2 / span 10; }
}

/* ── Duotone image filter ──────────────────────────────── */
.kin-img-duotone {
  filter: grayscale(1) sepia(0.25) contrast(1.05) brightness(0.97);
  border: 1px solid var(--kin-border);
  display: block;
  position: relative;
}

.kin-img-duotone-wrap {
  position: relative;
  display: inline-block;
}

.kin-img-duotone-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--kin-primary);
  opacity: 0.10;
  mix-blend-mode: multiply;
  pointer-events: none;
}

/* ── FeaturesSeam / numbered list ──────────────────────── */
.kin-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: kin-item;
}

.kin-list > li {
  counter-increment: kin-item;
  position: relative;
  padding: 2.5rem 0;
}

.kin-list > li > .kin-seam {
  margin-bottom: 1.75rem;
}

.kin-list__index::before {
  content: '§ ' counter(kin-item, decimal-leading-zero);
  font-family: var(--kin-font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--kin-primary);
  text-transform: uppercase;
  margin-right: 0.75rem;
}

/* ── Card (kintsugi — no radius, no shadow) ────────────── */
.kin-card {
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  padding: 2rem 0;
  border-top: 1px solid var(--kin-border);
}

/* ── Fade-in utility ───────────────────────────────────── */
@keyframes kinFade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: no-preference) {
  .kin-fade { animation: kinFade 600ms var(--kin-ease) both; }
  .kin-fade-1 { animation-delay: 80ms; }
  .kin-fade-2 { animation-delay: 160ms; }
  .kin-fade-3 { animation-delay: 240ms; }
  .kin-fade-4 { animation-delay: 320ms; }
}