/* 로그인 페이지 전용 CSS - 다른 페이지에 영향 없음 */

/* CSS 변수 정의 */
:root {
    --login-primary-color: #FF6B35;
    --login-secondary-color: #F7931E;
    --login-accent-color: #FFD23F;
    --login-bg-color: #f8f9fa;
    --login-card-bg: #ffffff;
    --login-text-color: #333333;
    --login-border-color: #e9ecef;
    --login-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --login-success-color: #28a745;
    --login-error-color: #dc3545;
    --login-warning-color: #ffc107;
}

/* 기본 레이아웃 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--login-primary-color) 0%, var(--login-secondary-color) 50%, var(--login-accent-color) 100%);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 로그인 컨테이너 */
.login-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-wrapper {
    background: var(--login-card-bg);
    border-radius: 20px;
    box-shadow: var(--login-shadow);
    padding: 40px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.login-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--login-primary-color), var(--login-secondary-color), var(--login-accent-color));
}

/* 헤더 */
.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--login-primary-color);
    margin: 0 0 10px 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.login-header h2 {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--login-text-color);
    margin: 0;
}

/* 폼 스타일 */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    position: relative;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--login-text-color);
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--login-border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fff;
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: var(--login-primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
    transform: translateY(-1px);
}

.form-control:valid {
    border-color: var(--login-success-color);
}

.form-control:invalid {
    border-color: var(--login-error-color);
}

/* 실시간 피드백 */
.form-feedback {
    margin-top: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    min-height: 18px;
    transition: all 0.3s ease;
}

.form-feedback.success {
    color: var(--login-success-color);
}

.form-feedback.error {
    color: var(--login-error-color);
}

.form-feedback.warning {
    color: var(--login-warning-color);
}

.form-feedback.info {
    color: #6c757d;
}

/* 로그인 옵션 */
.login-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 10px 0;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.form-check-input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--login-primary-color);
}

.form-check-label {
    font-size: 0.9rem;
    color: var(--login-text-color);
    cursor: pointer;
    margin: 0;
}

.forgot-password {
    color: var(--login-primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: var(--login-secondary-color);
    text-decoration: underline;
}

/* 버튼 스타일 */
.btn {
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--login-primary-color), var(--login-secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
    background: linear-gradient(135deg, var(--login-secondary-color), var(--login-primary-color));
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-lg {
    padding: 15px 24px;
    font-size: 1.1rem;
}

.w-100 {
    width: 100%;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
    color: white;
}

/* 푸터 */
.login-footer {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--login-border-color);
}

.login-link {
    color: var(--login-text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.login-link:hover {
    color: var(--login-primary-color);
    text-decoration: underline;
}

/* 모달 스타일 */
.modal-content {
    border-radius: 15px;
    border: none;
    box-shadow: var(--login-shadow);
}

.modal-header {
    background: linear-gradient(135deg, var(--login-primary-color), var(--login-secondary-color));
    color: white;
    border-radius: 15px 15px 0 0;
    border-bottom: none;
}

.modal-title {
    font-weight: 600;
}

.btn-close {
    filter: invert(1);
}

.modal-body {
    padding: 25px;
}

.modal-footer {
    border-top: 1px solid var(--login-border-color);
    padding: 15px 25px;
}

.modal-footer .btn {
    padding: 8px 20px;
    font-size: 0.9rem;
}

/* 애니메이션 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-wrapper {
    animation: fadeInUp 0.6s ease-out;
}

/* 로딩 상태 */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid var(--login-primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 성공/오류 메시지 */
.alert {
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-weight: 500;
    border: none;
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    color: var(--login-success-color);
    border-left: 4px solid var(--login-success-color);
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    color: var(--login-error-color);
    border-left: 4px solid var(--login-error-color);
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    color: var(--login-warning-color);
    border-left: 4px solid var(--login-warning-color);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .login-container {
        padding: 15px;
    }
    
    .login-wrapper {
        padding: 30px 25px;
        border-radius: 15px;
    }
    
    .login-header h1 {
        font-size: 2rem;
    }
    
    .login-header h2 {
        font-size: 1.3rem;
    }
    
    .form-control {
        padding: 10px 14px;
        font-size: 0.95rem;
    }
    
    .btn-lg {
        padding: 12px 20px;
        font-size: 1rem;
    }
    
    .login-options {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .login-wrapper {
        padding: 25px 20px;
    }
    
    .login-header h1 {
        font-size: 1.8rem;
    }
    
    .login-header h2 {
        font-size: 1.2rem;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-control {
        padding: 10px 12px;
    }
    
    .modal-body {
        padding: 20px;
    }
}

/* 접근성 개선 */
.form-control:focus-visible {
    outline: 2px solid var(--login-primary-color);
    outline-offset: 2px;
}

.btn:focus-visible {
    outline: 2px solid var(--login-primary-color);
    outline-offset: 2px;
}

/* 다크모드 지원 (선택사항) */
@media (prefers-color-scheme: dark) {
    :root {
        --login-bg-color: #1a1a1a;
        --login-card-bg: #2d2d2d;
        --login-text-color: #ffffff;
        --login-border-color: #404040;
    }
    
    body {
        background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #404040 100%);
    }
    
    .form-control {
        background: #3d3d3d;
        color: white;
        border-color: #404040;
    }
    
    .form-control:focus {
        background: #3d3d3d;
        color: white;
    }
}