/* ============================================================
   Soutenir — Nota & Veil
   Page-specific styles. Additive only. Built on tokens.css.
   Prefix: .st-  (soutenir). Brand: « L'Étude ».
   ============================================================ */

/* ============== HERO — sceau 3D ============== */

.st-hero {
  padding-top: calc(var(--space-12) + 1rem);
  padding-bottom: var(--space-10);
}
.st-hero__inner {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: var(--space-9);
  align-items: center;
}
@media (max-width: 960px) {
  .st-hero { padding-top: calc(var(--space-10) + 1rem); padding-bottom: var(--space-9); }
  .st-hero__inner { grid-template-columns: 1fr; gap: var(--space-7); }
}

.st-hero__pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.st-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 5.2vw + 1rem, 5.5rem);
  font-weight: var(--fw-regular);
  line-height: 0.96;
  letter-spacing: -0.04em;
  color: var(--text-strong);
  font-variation-settings: 'opsz' 144, 'SOFT' 30;
  margin-bottom: var(--space-6);
}
.st-hero__title em {
  font-style: italic;
  color: var(--accent);
  font-variation-settings: 'opsz' 144, 'SOFT' 80;
}
.st-hero__title .dim { color: var(--text-muted); }

.st-hero__lead { max-width: 54ch; margin-bottom: var(--space-7); }

.st-hero__cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.st-hero__note {
  margin-top: var(--space-7);
  padding-left: var(--space-5);
  border-left: 2px solid var(--sn-gold);
  max-width: 46ch;
  font-size: var(--fs-body-small);
  color: var(--text);
}

/* Visual stage holding the WebGL seal + its fallback */
.st-stage {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 520px;
  margin-left: auto;
  width: 100%;
}
@media (max-width: 960px) {
  .st-stage { max-width: 380px; margin: var(--space-4) auto 0; }
}
.st-stage__halo {
  position: absolute;
  inset: 4% ;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 42%, rgba(184,153,104,0.22), rgba(184,153,104,0.06) 45%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}
.st-stage__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  display: block;
  opacity: 0;
  transition: opacity 1.2s var(--ease-out);
}
.st-stage__canvas.is-live { opacity: 1; }

/* SVG fallback seal (no-WebGL / reduced-motion) */
.st-seal {
  position: absolute;
  inset: 8%;
  z-index: 1;
  display: block;
  color: var(--sn-gold);
}
.st-stage.has-webgl .st-seal { display: none; }

.st-seal__ring { animation: st-spin 80s linear infinite; transform-origin: 50% 50%; }
.st-seal__ring--rev { animation: st-spin 120s linear infinite reverse; transform-origin: 50% 50%; }
@keyframes st-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .st-seal__ring, .st-seal__ring--rev { animation: none; }
}

/* ============== DUO — Nota / Veil ============== */

.st-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7);
  margin-top: var(--space-9);
}
@media (max-width: 880px) { .st-duo { grid-template-columns: 1fr; gap: var(--space-6); } }

.st-block {
  position: relative;
  background: var(--bg-alt);
  border: 0.5px solid var(--sn-line);
  border-top: 2px solid var(--sn-gold);
  border-radius: var(--radius-card);
  padding: var(--space-7);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.st-block__mark {
  width: 44px; height: 44px;
  color: var(--accent);
  margin-bottom: var(--space-2);
}
.st-block__kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--sn-gold-deep);
}
.st-block h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: var(--fw-regular);
  letter-spacing: -0.02em;
}
.st-block h3 em { font-style: italic; color: var(--accent); }
.st-block p { color: var(--text); max-width: 48ch; }
.st-block .list-checked { margin-top: var(--space-2); }
.st-block__foot { margin-top: auto; padding-top: var(--space-4); }

/* ============== PSEUDONYMISATION — moment signature ============== */

.st-veil {
  position: relative;
  background: var(--sn-paper);
  border: 0.5px solid var(--sn-line);
  border-radius: var(--radius-card);
  padding: var(--space-7) var(--space-7) var(--space-6);
  box-shadow: var(--shadow-card);
  font-family: var(--font-display);
  max-width: 560px;
}
.st-veil::before {
  content: '';
  position: absolute;
  inset: 6px;
  border: 0.5px solid rgba(184,153,104,0.5);
  border-radius: 1px;
  pointer-events: none;
}
.st-veil__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4);
  border-bottom: 0.5px solid var(--sn-gold);
}
.st-veil__tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
}
.st-veil__status {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  transition: color var(--t-base) var(--ease-out);
}
.st-veil__status::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--sn-smoke-soft);
  transition: background var(--t-base) var(--ease-out), box-shadow var(--t-base);
}
.st-veil.is-protected .st-veil__status { color: var(--accent); }
.st-veil.is-protected .st-veil__status::before {
  background: var(--sn-etude-light);
  box-shadow: 0 0 0 3px rgba(31,75,63,0.14);
}

.st-veil__doc {
  font-size: 1.0625rem;
  line-height: 1.9;
  color: var(--text-strong);
}
.st-veil__doc .lbl {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  display: block;
  margin: var(--space-4) 0 var(--space-1);
}

/* The sensitive token: holds real value + masked token, cross-fades */
.st-tok {
  position: relative;
  display: inline-block;
  border-radius: 2px;
  padding: 0 0.18em;
  transition: background var(--t-base) var(--ease-out), color var(--t-base) var(--ease-out);
  white-space: nowrap;
}
.st-tok .real { transition: opacity 0.22s var(--ease-out); }
.st-tok .mask {
  position: absolute;
  left: 0.18em; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.82em;
  letter-spacing: 0.02em;
  color: var(--accent);
  opacity: 0;
  white-space: nowrap;
  transition: opacity 0.22s var(--ease-out);
  pointer-events: none;
}
.st-veil.is-protected .st-tok {
  background: rgba(31,75,63,0.10);
  color: transparent;
}
.st-veil.is-protected .st-tok .real { opacity: 0; }
.st-veil.is-protected .st-tok .mask { opacity: 1; position: static; transform: none; }

.st-veil__foot {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 0.5px solid rgba(184,153,104,0.4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.st-veil__hint {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}
.st-veil__toggle {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .st-tok .real, .st-tok .mask, .st-veil__status, .st-veil__status::before { transition: none; }
}

/* ============== CHIFFRES (bande) ============== */

.st-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-7);
}
@media (max-width: 880px) { .st-stats { grid-template-columns: 1fr 1fr; gap: var(--space-6) var(--space-7); } }
@media (max-width: 460px) { .st-stats { grid-template-columns: 1fr; } }

.st-stat { border-top: 0.5px solid var(--sn-gold); padding-top: var(--space-5); }
.st-stat__val {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 3.5vw + 1rem, 3.75rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--sn-paper);
  font-feature-settings: 'lnum','tnum';
  margin-bottom: var(--space-3);
}
.st-stat__val .unit { font-size: 0.45em; color: var(--sn-gold-light); margin-left: 0.15em; letter-spacing: 0; }
.st-stat__lbl {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(245,239,226,0.62);
  line-height: 1.5;
  max-width: 26ch;
}

/* ============== DON ============== */

.st-don__head { max-width: 60ch; }

.st-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-9);
  align-items: stretch;
}
@media (max-width: 880px) { .st-tiers { grid-template-columns: 1fr; gap: var(--space-5); } }

.st-tier {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--bg-alt);
  border: 0.5px solid var(--sn-line);
  border-radius: var(--radius-card);
  padding: var(--space-7) var(--space-6) var(--space-6);
  transition: transform var(--t-base) var(--ease-out), box-shadow var(--t-base), border-color var(--t-base);
}
.st-tier:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); border-color: var(--sn-line-soft); }
.st-tier--featured {
  border: 0.5px solid var(--sn-gold);
  border-top: 2px solid var(--sn-gold);
  background: var(--sn-paper);
}
.st-tier__flag {
  position: absolute;
  top: calc(-1 * var(--space-3));
  left: var(--space-6);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--sn-paper);
  background: var(--sn-etude);
  padding: 0.32em 0.7em;
  border-radius: 2px;
}
.st-tier__name {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--sn-gold-deep);
}
.st-tier__amount {
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--text-strong);
  font-feature-settings: 'lnum','tnum';
}
.st-tier__amount .cur { font-size: 0.5em; color: var(--text-muted); margin-left: 0.1em; }
.st-tier__funds {
  font-size: var(--fs-body-small);
  color: var(--text);
  line-height: 1.55;
  flex: 1;
}
.st-tier .btn { margin-top: var(--space-2); }

/* Custom amount + receipt note on ink background */
.st-don__custom {
  margin-top: var(--space-8);
  padding: var(--space-6) var(--space-7);
  background: rgba(184,153,104,0.06);
  border: 0.5px solid rgba(184,153,104,0.3);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-7);
  flex-wrap: wrap;
}
.st-don__custom-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  align-items: flex-start;
  flex: 1 1 320px;
}
.st-don__custom p { margin: 0; max-width: 46ch; }

/* Carte QR — papier crème pour ressortir sur fond encre, scannable */
.st-qr {
  margin: 0;
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--sn-paper);
  border: 0.5px solid rgba(184,153,104,0.5);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}
.st-qr img {
  width: 150px;
  height: 150px;
  display: block;
}
.st-qr figcaption {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--sn-smoke);
}
@media (max-width: 600px) {
  .st-don__custom { justify-content: center; text-align: center; }
  .st-don__custom-text { align-items: center; }
  .st-qr { margin: 0 auto; }
}
.st-don__note {
  margin-top: var(--space-6);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(245,239,226,0.6);
  line-height: 1.8;
}
.st-don .st-tier__amount,
.st-don .st-tier__name,
.st-don .st-tier__funds { color: var(--text-strong); }
.st-don .st-tier__funds { color: var(--text); }

/* ============== FORMULAIRE ============== */

.st-form-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: var(--space-9);
  align-items: start;
}
@media (max-width: 920px) { .st-form-grid { grid-template-columns: 1fr; gap: var(--space-7); } }

.st-fieldset {
  border: 0;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.st-fieldset legend {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--sn-gold-deep);
  padding: 0;
  margin-bottom: var(--space-2);
}
.st-section-sep {
  margin: var(--space-7) 0 var(--space-2);
  padding-top: var(--space-6);
  border-top: 0.5px solid var(--sn-line);
}

.st-choices { display: flex; flex-direction: column; gap: var(--space-2); }
.st-choices--grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2) var(--space-5);
}
@media (max-width: 560px) { .st-choices--grid { grid-template-columns: 1fr; } }

.st-opt {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 0.5px solid var(--sn-line);
  border-radius: var(--radius-card);
  background: var(--bg-alt);
  cursor: pointer;
  font-size: var(--fs-body-small);
  line-height: 1.45;
  transition: border-color var(--t-fast), background var(--t-fast);
}
.st-opt:hover { border-color: var(--sn-gold); }
.st-opt input { margin-top: 2px; flex-shrink: 0; accent-color: var(--sn-etude); width: 16px; height: 16px; cursor: pointer; }
.st-opt:has(input:checked) { border-color: var(--accent); background: rgba(31,75,63,0.05); }

.st-counter { font-variation-settings: normal; }

.st-aside-card {
  position: sticky;
  top: 100px;
  background: var(--bg-alt);
  border: 0.5px solid var(--sn-line);
  border-left: 2px solid var(--sn-gold);
  border-radius: var(--radius-card);
  padding: var(--space-7);
}
@media (max-width: 920px) { .st-aside-card { position: static; } }
.st-aside-card h3 { font-family: var(--font-display); font-size: 1.4rem; margin-bottom: var(--space-4); }
.st-aside-card .list-checked li { font-size: var(--fs-body-small); }

/* ============== MAGNETIC BUTTON ============== */
.st-mag { will-change: transform; }
@media (hover: none) { .st-mag { transform: none !important; } }

/* ============== GOLD FILET (draw-on-scroll) ============== */
.st-filet { display: block; width: 100%; height: 2px; overflow: visible; }
.st-filet path { stroke: var(--sn-gold); stroke-width: 1; fill: none; }

/* ============== MANIFESTE ============== */
.st-manifest p { font-size: var(--fs-lead); line-height: 1.7; color: var(--text); margin-bottom: var(--space-5); }
.st-manifest p strong { color: var(--text-strong); }
.st-manifest__sign {
  margin-top: var(--space-7);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.125rem;
  color: var(--text-strong);
}
.st-manifest__sign span {
  display: block;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  margin-top: var(--space-2);
}

/* ============== ANCHOR OFFSET (fixed header) ============== */
.st-anchor { scroll-margin-top: 96px; }