/* 로그인 페이지 스타일 - 모던 반응형 */

:root {
    --login-bg: #f8f9fa;
    --login-container-bg: #ffffff;
    --login-text-primary: #212529;
    --login-text-secondary: #6c757d;
    --login-input-border: #dee2e6;
    --login-input-focus: #2a5298;
    --login-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

[data-theme="dark"] {
    --login-bg: #121212;
    --login-container-bg: #1e1e1e;
    --login-text-primary: #e0e0e0;
    --login-text-secondary: #a0a0a0;
    --login-input-border: #333333;
    --login-input-focus: #4a7bc8;
    --login-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Malgun Gothic", "맑은 고딕", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
    background: var(--login-bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    transition: background-color 0.3s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.login-container {
    width: 100%;
    max-width: 420px;
    background: var(--login-container-bg);
    border-radius: 16px;
    box-shadow: var(--login-shadow);
    padding: 40px 32px;
    transition: background-color 0.3s ease;
    border: 1px solid var(--login-input-border);
}

.login-header {
    text-align: center;
    margin-bottom: 36px;
}

.login-header h1 {
    font-size: 28px;
    color: var(--login-text-primary);
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.login-header p {
    font-size: 14px;
    color: var(--login-text-secondary);
}

.login-form {
    margin-top: 28px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--login-text-primary);
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--login-input-border);
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.2s ease;
    font-family: inherit;
    background: var(--login-container-bg);
    color: var(--login-text-primary);
    -webkit-appearance: none;
    appearance: none;
}

.form-group input:focus {
    outline: none;
    border-color: var(--login-input-focus);
    box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.1);
}

[data-theme="dark"] .form-group input:focus {
    box-shadow: 0 0 0 3px rgba(74, 123, 200, 0.15);
}

.form-group input::placeholder {
    color: var(--login-text-secondary);
    opacity: 0.6;
}

.error-message {
    background-color: #fff5f5;
    color: #c53030;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid #fed7d7;
    font-size: 13px;
}

[data-theme="dark"] .error-message {
    background-color: #3a1f1f;
    color: #ff6b6b;
    border-color: #5a2f2f;
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--login-input-focus);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 8px;
    min-height: 48px;
}

.btn-login:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(42, 82, 152, 0.3);
    background: var(--login-input-focus);
    filter: brightness(1.05);
}

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

[data-theme="dark"] .btn-login:hover {
    filter: brightness(1.1);
}

.login-footer {
    margin-top: 32px;
    text-align: center;
    font-size: 12px;
    color: var(--login-text-secondary);
    line-height: 1.8;
}

.login-footer p {
    margin-bottom: 6px;
}

/* 반응형 - 태블릿 */
@media (max-width: 768px) {
    body {
        padding: 16px;
    }
    
    .login-container {
        padding: 36px 28px;
        max-width: 100%;
    }
    
    .login-header h1 {
        font-size: 24px;
    }
}

/* 반응형 - 모바일 */
@media (max-width: 480px) {
    body {
        padding: 16px;
        align-items: center;
    }
    
    .login-container {
        padding: 32px 24px;
        border-radius: 12px;
    }
    
    .login-header {
        margin-bottom: 28px;
    }
    
    .login-header h1 {
        font-size: 22px;
    }
    
    .login-header p {
        font-size: 13px;
    }
    
    .form-group {
        margin-bottom: 18px;
    }
    
    .form-group input {
        padding: 12px 14px;
        font-size: 16px; /* iOS 줌 방지 */
    }
    
    .btn-login {
        padding: 12px;
        font-size: 15px;
        min-height: 44px;
    }
    
    .login-footer {
        margin-top: 24px;
        font-size: 11px;
    }
}

/* 터치 최적화 */
@media (hover: none) and (pointer: coarse) {
    .btn-login,
    .form-group input {
        min-height: 48px;
        touch-action: manipulation;
    }
}