/*
 * PRESTKA V15 — Login plein écran, variante V1 « Split éditorial 60/40 »
 * (sketch 19, refonte issue de l'audit 2026-07-06 — revue DG 2026-07-08).
 * Namespaces .v1auth / .v1__ / .fs- : aucun conflit avec components.css
 * (NE JAMAIS accoler une étoile puis un slash dans ce commentaire : la séquence
 *  fermerait le commentaire et ferait sauter la règle .v1auth suivante — fix 2026-07-11).
 * (Propshaft charge auth.css AVANT components.css, ordre alphabétique).
 * Contrainte n°1 : le bouton « Se connecter » reste au-dessus de la ligne
 * de flottaison à 1440×900 ET 1366×768 (formpane centré verticalement).
 */

/* ---- Scène plein écran ---- */
.v1auth {
  position: relative; min-height: 100dvh; overflow: hidden; isolation: isolate;
  /* Photo de connexion (2026-07-22). Propshaft résout le nom nu contre app/assets/images
     (même convention que les polices dans tokens.css). --bg-hero = fallback si l'image manque. */
  background-color: var(--bg-hero);
  background-image: url("/assets/wallpaper_login-a868bc5b.webp");
  background-size: cover;
  background-position: center;
}
/* Aurora animée : nappe de couleurs (palette DS) qui dérive lentement derrière
   la scène (revue DG 2026-07-09, LOT 2.4). CSS pur (CSP OK), coupée en reduced-motion. */
.v1auth::before {
  content: ''; position: absolute; inset: -20%; z-index: 0; pointer-events: none;
  background:
    radial-gradient(38% 48% at 22% 30%, color-mix(in srgb, var(--prestka-primary) 42%, transparent), transparent 70%),
    radial-gradient(42% 44% at 78% 22%, color-mix(in srgb, var(--setka-primary) 34%, transparent), transparent 70%),
    radial-gradient(46% 50% at 62% 82%, color-mix(in srgb, var(--prestka-light) 30%, transparent), transparent 72%);
  background-size: 180% 180%;
  filter: blur(58px);
  opacity: .55;
  animation: fs-aurora 24s var(--ease-silk) infinite alternate;
}
[data-theme="light"] .v1auth::before { opacity: .32; }
@keyframes fs-aurora {
  0%   { background-position: 0% 0%, 100% 0%, 50% 100%; transform: translate3d(0, 0, 0) scale(1); }
  100% { background-position: 26% 36%, 72% 34%, 40% 68%; transform: translate3d(-3%, -4%, 0) scale(1.05); }
}
@media (prefers-reduced-motion: reduce) { .v1auth::before { animation: none; } }

/* ---- Atmosphère : mesh + constellation (coupée en reduced-motion) ---- */
.fs-mesh { position: absolute; inset: -25%; z-index: 0; filter: blur(64px); opacity: .9; pointer-events: none; }
[data-theme="light"] .fs-mesh { opacity: .5; }
.fs-mesh .blob { position: absolute; border-radius: 50%; mix-blend-mode: screen; animation: fs-drift 26s ease-in-out infinite alternate; }
[data-theme="light"] .fs-mesh .blob { mix-blend-mode: multiply; }
.fs-mesh .b1 { width: 52%; height: 52%; top: -4%; left: -6%; background: radial-gradient(circle, color-mix(in srgb, var(--prestka-primary) 85%, transparent), transparent 65%); }
.fs-mesh .b2 { width: 40%; height: 40%; top: 46%; left: 18%; background: radial-gradient(circle, color-mix(in srgb, var(--setka-primary) 70%, transparent), transparent 65%); animation-delay: -8s; }
.fs-mesh .b3 { width: 26%; height: 26%; top: 18%; left: 34%; background: radial-gradient(circle, color-mix(in srgb, var(--gold) 28%, transparent), transparent 60%); animation-delay: -14s; }
@keyframes fs-drift { from { transform: translate3d(0, 0, 0) scale(1); } to { transform: translate3d(4%, 6%, 0) scale(1.08); } }
@media (prefers-reduced-motion: reduce) { .fs-mesh .blob { animation: none; } }
.fs-dots {
  position: absolute; inset: 0; z-index: 0; opacity: .4; pointer-events: none;
  background-image: radial-gradient(color-mix(in srgb, var(--gold) 16%, transparent) 1px, transparent 1.4px);
  background-size: 40px 40px;
  -webkit-mask-image: radial-gradient(ellipse at 30% 40%, black 25%, transparent 75%);
  mask-image: radial-gradient(ellipse at 30% 40%, black 25%, transparent 75%);
}
/* D1 (2026-07-22) : la vraie photo remplace les couches déco colorées. On neutralise
   aurora + mesh + constellation — elles teinteraient la photo (indigo/setka/gold), or D1
   impose une vignette NOIRE neutre sans teinte. Le flou/vignette viennent maintenant de
   .v1__brandpane::after (gauche) et du backdrop-filter de .v1__formpane (droite). */
.v1auth::before, .fs-mesh, .fs-dots { display: none; }

/* ---- Lockup marque (SEUL wordmark de la page) — logotype vectoriel #plogo (D2) ---- */
.fs-brand { display: inline-flex; align-items: center; gap: 12px; }
.fs-brand .fs-logo { height: 32px; width: auto; color: var(--on-photo, var(--text-primary)); }

/* ---- Formulaire (mapping Devise strict) ---- */
.fs-form { display: grid; gap: var(--space-4); width: 100%; }
.fs-form .flabel { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: var(--tracking-caps); text-transform: uppercase; color: var(--text-tertiary); display: block; margin-bottom: 6px; }
.fs-field { position: relative; }
.fs-field .icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; color: var(--text-tertiary); transition: color var(--dur-fast) var(--ease-silk); pointer-events: none; }
.fs-field input {
  width: 100%; height: 48px; padding: 0 44px 0 42px;
  background: color-mix(in srgb, var(--bg) 55%, transparent);
  border: 1px solid var(--line-strong); border-radius: var(--radius-md);
  color: var(--text-primary); font-family: var(--font-sans); font-size: var(--text-sm);
  transition: border-color var(--dur-fast) var(--ease-silk), box-shadow var(--dur-fast) var(--ease-silk);
}
.fs-field input::placeholder { color: var(--text-tertiary); }
.fs-field input:focus-visible { outline: none; border-color: var(--prestka-light); box-shadow: 0 0 0 3px color-mix(in srgb, var(--prestka-primary) 30%, transparent); }
.fs-field:focus-within .icon { color: var(--prestka-light); }
.fs-eye { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); width: 34px; height: 34px; display: grid; place-items: center; background: transparent; border: 0; border-radius: var(--radius-sm); color: var(--text-tertiary); cursor: pointer; }
.fs-eye:hover { color: var(--text-primary); background: color-mix(in srgb, var(--text-primary) 8%, transparent); }
.fs-eye .icon { position: static; transform: none; width: 17px; height: 17px; }
.fs-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.fs-remember { display: flex; align-items: center; gap: 8px; font-size: var(--text-xs); color: var(--text-secondary); cursor: pointer; }
.fs-remember input { accent-color: var(--prestka-primary); }
.fs-link { color: var(--text-secondary); font-size: var(--text-xs); text-decoration: underline; text-underline-offset: 3px; }
.fs-link:hover { color: var(--text-primary); }
.fs-submit {
  height: 50px; width: 100%; border: 0; border-radius: var(--radius-md); cursor: pointer;
  background: linear-gradient(135deg, var(--prestka-primary), var(--prestka-light));
  color: #fff; font-family: var(--font-sans); font-weight: 600; font-size: var(--text-sm); letter-spacing: .01em;
  box-shadow: 0 10px 28px color-mix(in srgb, var(--prestka-primary) 45%, transparent);
  transition: transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-fast) var(--ease-silk);
}
.fs-submit:hover { transform: translateY(-1px); box-shadow: 0 14px 34px color-mix(in srgb, var(--prestka-primary) 55%, transparent); }
.fs-submit:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.fs-foot { font-size: var(--text-xs); color: var(--text-tertiary); }
.fs-foot a { color: var(--text-secondary); text-decoration: underline; text-underline-offset: 3px; }

/* ---- Split éditorial 60/40 ---- */
.v1 { display: grid; grid-template-columns: 3fr 2fr; position: absolute; inset: 0; }
.v1__brandpane { position: relative; z-index: 1; display: flex; flex-direction: column; justify-content: space-between; padding: clamp(24px, 4vw, 56px); overflow: hidden; --on-photo: #ffffff; }
/* Vignette NOIRE neutre (D1) — aucune teinte colorée, plus dense en bas pour la lisibilité
   de la headline (ancrée en bas via justify-content:space-between). */
.v1__brandpane::after {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(0,0,0,.12) 0%, rgba(0,0,0,.30) 45%, rgba(0,0,0,.66) 100%),
    linear-gradient(115deg, rgba(0,0,0,.26) 0%, transparent 62%);
}
/* Texte + logo BLANCS sur la photo dans les 2 thèmes (1.2) : var locale scopée --on-photo
   = seule dérogation « couleur en dur » admise (texte-sur-photo, indépendant du thème). */
.v1__eyebrow { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: var(--tracking-caps); text-transform: uppercase; color: var(--on-photo); }
.v1__headline { font-family: var(--font-display); font-style: italic; font-weight: 400; font-size: clamp(34px, 4.6vw, 64px); line-height: 1.06; color: var(--on-photo); max-width: 14ch; margin-top: var(--space-3); }
.v1__headline em { color: var(--on-photo); font-style: italic; text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--gold) 70%, transparent); text-underline-offset: 6px; text-decoration-thickness: 2px; }
.v1__sub { margin-top: var(--space-4); max-width: 44ch; color: var(--text-secondary); font-size: var(--text-sm); line-height: 1.6; }
.v1__meta { display: flex; gap: var(--space-5); flex-wrap: wrap; }
.v1__meta .m { border-left: 2px solid color-mix(in srgb, var(--gold) 55%, transparent); padding-left: 12px; }
.v1__meta .m b { display: block; font-family: var(--font-display); font-style: italic; font-weight: 400; font-size: var(--text-lg); color: var(--text-primary); }
.v1__meta .m span { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: var(--tracking-caps); text-transform: uppercase; color: var(--text-tertiary); }
.v1__formpane {
  position: relative; z-index: 2; display: flex; flex-direction: column; justify-content: center; gap: var(--space-5);
  padding: clamp(24px, 3.4vw, 52px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  -webkit-backdrop-filter: blur(26px) saturate(1.3); backdrop-filter: blur(26px) saturate(1.3);
  border-left: 1px solid var(--line-strong);
}
.v1__formpane .goldline { position: absolute; top: 0; left: 10%; right: 10%; height: 1px; background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--gold) 55%, transparent), transparent); }
.v1__welcome h2 { font-family: var(--font-display); font-style: italic; font-weight: 400; font-size: var(--text-3xl); line-height: 1.05; color: var(--text-primary); }
.v1__welcome p { margin-top: 6px; color: var(--text-secondary); font-size: var(--text-xs); }
.v1__formpane .auth-banner { margin-bottom: 0; }

@media (max-width: 900px) {
  /* Mobile : marque compacte centrée en haut (logo + baseline), formulaire centré qui
     remplit le reste. Headline masqué (A3). Tout tient dans 100dvh, .v1auth reste overflow:hidden. */
  .v1 { position: relative; grid-template-columns: 1fr; grid-template-rows: auto 1fr; min-height: 100dvh; }
  .v1__brandpane {
    min-height: auto;
    justify-content: center; align-items: center; text-align: center;
    gap: var(--space-3);
    padding: clamp(28px, 7vw, 44px) var(--space-5) var(--space-3);
  }
  /* Sur mobile la marque est centrée en haut sur la photo : garder un scrim neutre
     (top-weighté) pour la lisibilité du logo + eyebrow blancs. */
  .v1__brandpane::after { display: block; background: linear-gradient(180deg, rgba(0,0,0,.5) 0%, rgba(0,0,0,.28) 100%); }
  .fs-brand { justify-content: center; }
  .v1__headline, .v1__meta, .v1__sub { display: none; }
  .v1__formpane {
    border-left: 0; border-top: 1px solid var(--line-strong);
    text-align: center;
  }
  .v1__welcome { text-align: center; }
  .fs-form { text-align: left; } /* saisie : labels/champs restent alignés à gauche */
}