/* === PAGE D'AUTHENTIFICATION === */

.auth-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    position: relative;
}

.auth-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.3;
}

.btn-back-auth {
    position: absolute;
    top: 30px;
    left: 30px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    z-index: 10;
}

.btn-back-auth:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateX(-5px);
}

.auth-container {
    max-width: 480px;
    width: 100%;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    animation: slideInUp 0.5s ease-out;
    position: relative;
    z-index: 1;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--cyan) 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

.auth-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.auth-icon.blue {
    background: rgba(30, 136, 229, 0.2);
}

.auth-icon.green {
    background: rgba(76, 175, 80, 0.2);
}

.auth-title {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 10px 0;
}

.auth-subtitle {
    font-size: 16px;
    opacity: 0.95;
    margin: 0;
}

.auth-form {
    padding: 40px 30px;
}

.form-group-auth {
    margin-bottom: 25px;
}

.form-group-auth label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-size: 14px;
}

.form-group-auth label i {
    color: var(--primary-blue);
    font-size: 16px;
}

.form-control-auth {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s ease;
    background: white;
}

.form-control-auth:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(30, 136, 229, 0.1);
}

.password-input-wrapper {
    position: relative;
}

.btn-toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 8px;
    font-size: 18px;
    transition: all 0.3s ease;
}

.btn-toggle-password:hover {
    color: var(--primary-blue);
}

.form-check-auth {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.checkbox-auth {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.checkbox-auth input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-blue);
}

.checkbox-auth span {
    font-size: 14px;
    color: var(--text-dark);
}

.forgot-password {
    font-size: 14px;
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.forgot-password:hover {
    text-decoration: underline;
}

.alert-error {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #ffebee;
    border-left: 4px solid #f44336;
    color: #c62828;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.alert-error i {
    font-size: 18px;
}

.auth-actions {
    margin-bottom: 25px;
}

.btn-login {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--cyan) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(30, 136, 229, 0.3);
}

.btn-login:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 136, 229, 0.4);
}

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-login i.fa-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.auth-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.auth-footer p {
    font-size: 14px;
    color: var(--text-light);
    margin: 0;
}

.link-register {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.link-register:hover {
    text-decoration: underline;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .auth-page {
        padding: 20px 15px;
    }

    .btn-back-auth {
        top: 15px;
        left: 15px;
        padding: 10px 20px;
        font-size: 14px;
    }

    .auth-container {
        max-width: 100%;
        border-radius: 16px;
    }

    .auth-header {
        padding: 30px 20px;
    }

    .auth-icon {
        width: 70px;
        height: 70px;
        font-size: 28px;
    }

    .auth-title {
        font-size: 24px;
    }

    .auth-subtitle {
        font-size: 14px;
    }

    .auth-form {
        padding: 30px 20px;
    }

    .form-check-auth {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .auth-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }

    .auth-title {
        font-size: 22px;
    }

    .btn-login {
        padding: 14px;
        font-size: 15px;
    }
}