/**
 * Page de connexion — Concept 3 « Identité horizontale premium »
 */
.login-page {
  font-family: var(--font-sans);
  background: var(--sia-bg-deep);
  min-height: 100vh;
  overflow-x: hidden;
}

.login-container {
  display: flex;
  min-height: 100vh;
}

.login-page .left-panel {
  flex: 1;
  background: linear-gradient(160deg, var(--sia-bg-deep) 0%, var(--sia-bg-raised) 55%, var(--sia-brand) 140%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 2rem;
  position: relative;
  overflow: hidden;
}

.login-page .left-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="stars" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="20" cy="20" r="1" fill="rgba(198,210,230,0.25)"/><circle cx="80" cy="40" r="0.5" fill="rgba(198,210,230,0.15)"/><circle cx="40" cy="80" r="1" fill="rgba(198,210,230,0.2)"/></pattern></defs><rect width="100%" height="100%" fill="url(%23stars)"/></svg>');
  opacity: 0.35;
  pointer-events: none;
}

.login-page .logo-visual {
  position: relative;
  z-index: 1;
  text-align: center;
  width: 80%;
  max-width: 700px;
}

.login-page .logo-visual img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 30px rgba(30, 58, 138, 0.25));
}

/* B1 — grand logo carré couleur (hibou + SIA + baseline) */
.login-page .logo-visual--square {
  width: min(88%, 360px);
  max-width: 360px;
}

.login-page .logo-visual--square img {
  width: 100%;
  height: auto;
  max-height: min(52vh, 360px);
  margin: 0 auto;
  display: block;
  border-radius: 12px;
}

/* Legacy — grand logo horizontal */
.login-page .logo-visual--hero {
  width: 92%;
  max-width: 520px;
}

.login-page .logo-visual--hero img {
  max-height: min(42vh, 200px);
  width: auto;
  max-width: 100%;
  margin: 0 auto;
  display: block;
}

.login-page .brand-tagline {
  position: relative;
  z-index: 1;
  margin-top: 1.5rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sia-text-on-dark);
  opacity: 0.85;
}

.login-page .login-tagline {
  position: relative;
  z-index: 1;
  margin: 1.75rem 0 0;
  max-width: 22rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.55;
  text-align: center;
  color: var(--sia-text-on-dark);
  opacity: 0.92;
}

.login-page .btn-back {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 10;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--sia-text-on-dark);
  background: rgba(15, 27, 61, 0.65);
  border: 1px solid rgba(198, 210, 230, 0.35);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-base);
  backdrop-filter: blur(4px);
}

.login-page .btn-back:hover {
  background: rgba(30, 58, 138, 0.35);
  border-color: var(--sia-muted);
}

.login-page .btn-back svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

.login-page .right-panel {
  flex: 1;
  background: var(--sia-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-page .form-group {
  margin-bottom: 1.5rem;
}

.login-page .login-form-card {
  background: var(--sia-surface-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 450px;
  padding: 3rem 2.5rem;
  border: 1px solid rgba(107, 127, 166, 0.2);
}

.login-page .login-form-card h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--sia-text-on-light);
  margin-bottom: 2rem;
  text-align: center;
  letter-spacing: 0.02em;
}

.login-page .input-wrapper {
  position: relative;
}

.login-page label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--sia-text-on-light);
}

.login-page input[type="email"],
.login-page input[type="password"],
.login-page input[type="text"]#password {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 1rem;
  border: 2px solid var(--sia-muted);
  border-radius: var(--radius-md);
  background: var(--sia-bg-light);
  color: var(--sia-text-on-light);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.login-page input:focus {
  outline: none;
  border-color: var(--sia-brand);
  background: var(--sia-surface-light);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.15);
}

.login-page .password-container {
  position: relative;
}

.login-page .password-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--sia-muted);
  display: flex;
  align-items: center;
}

.login-page .password-toggle svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

.login-page .password-toggle:hover {
  color: var(--sia-brand);
}

.login-page .btn-login {
  width: 100%;
  padding: 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--sia-text-on-dark);
  background: var(--sia-brand);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 4px 16px rgba(30, 58, 138, 0.35);
}

.login-page .btn-login:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.login-page .btn-login:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.login-page .security-notice {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--sia-bg-light);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: var(--sia-muted);
  text-align: center;
  border: 1px solid rgba(107, 127, 166, 0.25);
}

.login-page .security-notice strong {
  color: var(--sia-text-on-light);
}

.login-page a.link-brand {
  color: var(--sia-brand);
}

.login-page .alert {
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.login-page .alert-error {
  background: #fde8ea;
  color: #9B2335;
  border: 1px solid rgba(155, 35, 53, 0.35);
}

.login-page .alert-success {
  background: #e8f5ee;
  color: #1e5c40;
  border: 1px solid rgba(30, 92, 64, 0.35);
}

.login-page .spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: login-spin 0.6s linear infinite;
  margin-left: 8px;
}

@keyframes login-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 968px) {
  .login-container { flex-direction: column; }
  .login-page .left-panel { min-height: 38vh; padding: 2rem 1.5rem; }
  .login-page .login-tagline { font-size: 0.9rem; max-width: 18rem; margin-top: 1.25rem; }
  .login-page .right-panel { min-height: 62vh; }
}