/* ==========================================
   로그인 페이지 - 인디고 + 시안 다크 테마
   (index/admin 컨셉 통일)
   수정일: 2026-01-21
========================================== */

/* CSS 변수 (style.css와 동일) */
:root {
    --bg-primary: #1A1748;
    --bg-secondary: #252157;
    --bg-tertiary: #1E1B50;
    --surface-1: #201D4A;
    --main-blue: #12103A;
    --accent-color: #22D3EE;
    --accent-color-hover: #06B6D4;
    --accent-indigo: #818CF8;
    --text-primary: #EEEEFF;
    --text-secondary: #A5A6C7;
    --text-muted: #7C7DA3;
    --border-color: rgba(160, 160, 220, 0.15);
    --border-color-strong: rgba(160, 160, 220, 0.25);
    --btn-danger-bg: #EF4444;
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(34, 211, 238, 0.1);
}

/* 전체 페이지 스타일 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    /* 인디고 그라디언트 배경 */
    background: linear-gradient(135deg, var(--main-blue) 0%, var(--bg-primary) 50%, var(--bg-secondary) 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* 로그인 컨테이너 */
.login-container {
    width: 100%;
    max-width: 420px;
}

.login-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color-strong);
    border-radius: 16px;
    box-shadow: var(--shadow-md), var(--shadow-glow);
    padding: 40px;
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 로고 이미지 스타일 */
.login-logo {
    display: block;
    height: 300px;
    width: auto;
    margin: 0 auto 1.5rem;
}

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

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

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

.login-subtitle {
    margin-top: 15px;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--surface-1);
    color: var(--text-primary);
    font-size: 15px;
    transition: all 0.2s ease;
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group input:focus {
    outline: none;
    background-color: var(--bg-tertiary);
    /* 시안 포커스 */
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
}

/* 체크박스 */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
}

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

/* 에러 메시지 */
.error-message {
    background-color: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    padding: 12px;
    color: #F87171;
    font-size: 14px;
    text-align: center;
}

/* 로그인 버튼 - 시안 테마 */
.btn-login {
    background: var(--accent-color);
    color: #0F172A;
    padding: 16px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 6px -1px rgba(34, 211, 238, 0.3);
    transition: transform 0.1s, box-shadow 0.1s, background-color 0.2s;
}

.btn-login:hover {
    background: var(--accent-color-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -3px rgba(34, 211, 238, 0.4);
}

.btn-login:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(34, 211, 238, 0.2);
}

.btn-login:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
    transform: none;
    opacity: 0.5;
}

/* 푸터 */
.login-footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.login-footer p {
    color: var(--text-muted);
    font-size: 12px;
}

/* 반응형 */
@media (max-width: 480px) {
    .login-box {
        padding: 30px 20px;
    }
    
    .login-header h1 {
        font-size: 24px;
    }
    
    .login-logo {
        height: 200px;
    }
}