/* ============================================
   StudyBoard — Pages d'authentification
   Layout centré, sans sidebar
   ============================================ */

body.auth-page {
    background: linear-gradient(135deg, #f5f6fb 0%, #eef0fb 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 24px;
    color: var(--accent);
    font-weight: 700;
    font-size: 1.25rem;
}

.auth-logo svg {
    width: 28px;
    height: 28px;
}

.auth-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
    padding: 32px;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.2px;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 24px;
    line-height: 1.5;
}

.auth-form .field {
    margin-bottom: 16px;
}

.auth-form label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.auth-form input[type="text"],
.auth-form input[type="email"],
.auth-form input[type="password"] {
    width: 100%;
    padding: 11px 14px;
    font-size: 0.95rem;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    background: #f8fafc;
    transition: border-color 0.2s, background 0.2s;
    font-family: inherit;
}

.auth-form input:focus {
    outline: none;
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.auth-form .code-input {
    letter-spacing: 12px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    font-family: 'SF Mono', Monaco, Menlo, monospace;
}

.auth-btn {
    width: 100%;
    padding: 12px 16px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.05s;
    font-family: inherit;
}

.auth-btn:hover { background: var(--accent-hover); }
.auth-btn:active { transform: translateY(1px); }
.auth-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover { text-decoration: underline; }

.auth-error,
.auth-success {
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 0.875rem;
    margin-bottom: 16px;
    line-height: 1.4;
}

.auth-error {
    background: var(--danger-light);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.auth-success {
    background: var(--success-light);
    color: var(--success);
    border: 1px solid rgba(5, 150, 105, 0.2);
}

.auth-help {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-top: 6px;
}