/* public/css/hub.css - Styles hub login + grille univers
   Charte Synoptïa : #0B1226 fond, #E6EDF7 texte, #2451FF primaire, #22D3EE cyan, #E11D8D magenta
   Contraintes : pas d'emoji, SVG inline uniquement, pas de dégradé sur boutons, couleur unie
*/

:root {
  /* Palette DARK (defaut systeme dark) */
  --color-bg: #0B1226;
  --color-bg-elevated: #121B35;
  --color-text: #E6EDF7;
  --color-muted: #A9B8D8;
  --color-primary: #2451FF;
  --color-primary-hover: #1A3FD9;
  --color-accent-cyan: #22D3EE;
  --color-accent-magenta: #E11D8D;
  --color-border: rgba(230, 237, 247, 0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  color-scheme: dark light;
}

/* Palette LIGHT automatique si systeme en light (charte Synoptia adaptee) */
@media (prefers-color-scheme: light) {
  :root {
    --color-bg: #F5F7FC;
    --color-bg-elevated: #FFFFFF;
    --color-text: #0B1226;
    --color-muted: #5A6B8C;
    --color-primary: #2451FF;
    --color-primary-hover: #1A3FD9;
    --color-accent-cyan: #0891A4;      /* cyan plus fonce pour contraste AA sur bg clair */
    --color-accent-magenta: #B3157A;   /* magenta plus fonce pour contraste AA */
    --color-border: rgba(11, 18, 38, 0.10);
    --shadow-card: 0 4px 16px rgba(11, 18, 38, 0.08);
  }
}

* { box-sizing: border-box; }

body.hub {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 16px;
  z-index: 100;
}
.skip-link:focus { top: 0; }

/* ---- Header ---- */
.hub-header {
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
}
.hub-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.hub-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.125rem;
}
.hub-logo svg { color: var(--color-accent-cyan); }
.hub-user {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

/* ---- Main ---- */
.hub-main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* ---- Login ---- */
.hub-login {
  max-width: 440px;
  margin: 2rem auto;
  padding: 2rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.hub-login h1 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
}
.hub-login__intro {
  color: var(--color-muted);
  margin: 0 0 2rem;
}
.hub-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.hub-form label {
  font-weight: 500;
  font-size: 0.9rem;
}
.hub-form input {
  padding: 0.75rem 1rem;
  font-size: 1rem;
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
}
.hub-form input:focus {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
  border-color: var(--color-accent-cyan);
}
.hub-fallback {
  color: var(--color-muted);
  font-size: 0.85rem;
  margin: 0.5rem 0 0;
}
.hub-fallback a {
  color: var(--color-accent-cyan);
  text-decoration: none;
  margin: 0 0.25rem;
}
.hub-fallback a:hover { text-decoration: underline; }
.hub-message {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  min-height: 1.25rem;
}
.hub-message.is-error {
  background: rgba(225, 29, 141, 0.15);
  border: 1px solid var(--color-accent-magenta);
  color: var(--color-text);
}
.hub-message.is-success {
  background: rgba(34, 211, 238, 0.15);
  border: 1px solid var(--color-accent-cyan);
  color: var(--color-text);
}

/* ---- Buttons ---- */
.btn-primary {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: background 0.15s ease;
}
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-primary:focus {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
}
.btn-link {
  background: none;
  border: none;
  color: var(--color-muted);
  font-size: 0.9rem;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
}
.btn-link:hover { color: var(--color-accent-cyan); text-decoration: underline; }
.inline-form { display: inline; }

/* ---- Grille univers ---- */
.hub-grid-section h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
}
.hub-intro { color: var(--color-muted); margin: 0 0 2rem; }
.hub-section-title {
  font-size: 1.125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin: 2rem 0 1rem;
}

.universe-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.universe-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.universe-card:hover {
  border-color: var(--color-accent-cyan);
  transform: translateY(-2px);
}
.universe-card a {
  display: block;
  padding: 2rem 1.5rem;
  color: inherit;
  text-decoration: none;
  height: 100%;
}
.universe-card__cover {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: rgba(36, 81, 255, 0.15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-cyan);
  margin-bottom: 1rem;
}
.universe-card--atelier .universe-card__cover {
  background: rgba(225, 29, 141, 0.15);
  color: var(--color-accent-magenta);
}
.universe-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}
.universe-card p {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin: 0 0 1rem;
}
.card-date {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(34, 211, 238, 0.1);
  color: var(--color-accent-cyan);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
}

/* ---- CTA ANCRER ---- */
.ancrer-cta {
  margin-top: 3rem;
  padding: 2rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}
.ancrer-cta h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}
.ancrer-cta p {
  color: var(--color-muted);
  margin: 0 0 1.5rem;
}

/* ---- Empty state ---- */
.empty-state {
  padding: 3rem 2rem;
  text-align: center;
  background: var(--color-bg-elevated);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-muted);
}
.empty-state a { color: var(--color-accent-cyan); }

/* ---- Footer ---- */
.hub-footer {
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
}
.hub-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--color-muted);
  font-size: 0.85rem;
}
.hub-footer nav a {
  color: var(--color-muted);
  text-decoration: none;
  margin-left: 1rem;
}
.hub-footer nav a:hover { color: var(--color-accent-cyan); }

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .hub-main { padding: 2rem 1rem; }
  .hub-header, .hub-footer { padding: 1rem; }
  .universe-grid { grid-template-columns: 1fr; }
  .hub-grid-section h1 { font-size: 1.5rem; }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after { transition: none !important; }
  .universe-card:hover { transform: none; }
}