/**
 * Style login/register inspiré du template mobile (split hero, thème Racing Coach)
 */
:root {
  --auth-red: #e30613;
  --auth-red2: #ff1f2a;
  --auth-dark: #0b0b0f;
  --auth-grayA: #e9e9ea;
  --auth-grayB: #f6f6f7;
  --auth-text: #111;
  --auth-white: #fff;
}

.auth-page {
  min-height: 100vh;
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  overflow-x: hidden;
  background: var(--auth-dark);
}

.auth-hero {
  min-height: 100vh;
  width: 100%;
  position: relative;
  background: linear-gradient(90deg, var(--auth-grayB) 0 50%, var(--auth-red) 50% 100%);
}

.auth-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1200px 800px at 75% 20%, rgba(255,255,255,.15), transparent 60%),
    radial-gradient(900px 700px at 30% 60%, rgba(0,0,0,.08), transparent 55%),
    repeating-linear-gradient(90deg, rgba(255,255,255,.06) 0 1px, transparent 1px 16px);
  mix-blend-mode: overlay;
  opacity: .35;
  pointer-events: none;
}

.auth-top {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  padding: 22px 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 6;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: .3px;
  color: var(--auth-text);
  text-transform: uppercase;
  font-size: 14px;
  text-decoration: none;
  color: inherit;
}

.auth-check {
  width: 28px;
  height: 16px;
  border-radius: 3px;
  overflow: hidden;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 1fr);
}

.auth-check span {
  background: var(--auth-dark);
}

.auth-check span:nth-child(even) {
  background: var(--auth-white);
}

.auth-theme {
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 12px;
  color: var(--auth-white);
}

.auth-watermark {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  pointer-events: none;
  font-weight: 900;
  letter-spacing: .12em;
  font-size: min(11vw, 140px);
  color: rgba(0,0,0,.06);
  text-transform: uppercase;
  transform: translateY(10px);
}

.auth-watermark span {
  color: rgba(255,255,255,.10);
  mix-blend-mode: soft-light;
}

/* Zones cliquables (landing) */
.auth-zone {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 50%;
  z-index: 7;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: inherit;
  transition: background 0.2s ease;
}

.auth-zone:hover {
  background: rgba(0,0,0,.03);
}

.auth-zone.left {
  left: 0;
}

.auth-zone.right {
  right: 0;
}

.auth-zone::after {
  content: attr(data-label);
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 800;
  letter-spacing: .12em;
  font-size: 13px;
  text-transform: uppercase;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.auth-zone.left::after {
  background: rgba(0,0,0,.08);
  color: var(--auth-text);
}

.auth-zone.right::after {
  background: rgba(255,255,255,.2);
  color: var(--auth-white);
}

.auth-zone:hover::after {
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
}

/* Panneau formulaire (overlay sur le hero) */
.auth-form-wrap {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-form-card {
  width: 100%;
  max-width: 420px;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-radius: 20px;
  box-shadow: 0 24px 48px rgba(0,0,0,.2), 0 0 0 1px rgba(0,0,0,.06);
  padding: 40px 36px;
}

.auth-form-card h1 {
  margin: 0 0 28px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--auth-text);
  text-align: center;
}

.auth-form-card .form-label {
  font-weight: 700;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--auth-text);
  margin-bottom: 8px;
}

.auth-form-card .form-control {
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,.12);
  padding: 14px 16px;
  font-size: 1rem;
}

.auth-form-card .form-control:focus {
  border-color: var(--auth-red);
  box-shadow: 0 0 0 3px rgba(227,6,19,.15);
}

.auth-form-card .btn-primary {
  width: 100%;
  padding: 14px 24px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: 13px;
  border-radius: 12px;
  border: none;
  background: var(--auth-red);
  color: var(--auth-white);
  margin-top: 8px;
  transition: background 0.2s ease, transform 0.1s ease;
}

.auth-form-card .btn-primary:hover {
  background: var(--auth-red2);
  color: var(--auth-white);
  transform: translateY(-1px);
}

.auth-form-card .auth-error {
  background: rgba(227,6,19,.1);
  border: 1px solid rgba(227,6,19,.3);
  color: #b91c1c;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  margin-bottom: 20px;
}

.auth-form-card .auth-success {
  background: rgba(22,163,74,.1);
  border: 1px solid rgba(22,163,74,.3);
  color: #15803d;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  margin-bottom: 20px;
}

.auth-form-card .auth-link {
  display: block;
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--auth-red);
  text-decoration: none;
  letter-spacing: .02em;
}

.auth-form-card .auth-link:hover {
  color: var(--auth-red2);
  text-decoration: underline;
}

.auth-back {
  position: absolute;
  left: 34px;
  bottom: 24px;
  z-index: 11;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(255,255,255,.9);
  text-decoration: none;
}

.auth-back:hover {
  color: var(--auth-white);
}

@media (max-width: 640px) {
  .auth-form-card {
    padding: 28px 24px;
  }
  .auth-zone::after {
    font-size: 11px;
    padding: 12px 20px;
  }
}