/**
 * Mail Service - 공통 스타일시트
 * 
 * 미니멀하고 깔끔한 디자인
 * 중립적 색상
 * 
 * @package MailService Frontend
 * @version 1.0.0
 */

/* ==================== 리셋 및 기본 설정 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #333333;
    --secondary-color: #666666;
    --background-color: #f5f5f5;
    --white: #ffffff;
    --border-color: #dddddd;
    --accent-color: #4a90e2;
    --success-color: #5cb85c;
    --danger-color: #d9534f;
    --warning-color: #f0ad4e;
    --text-color: #333333;
    --text-secondary: #777777;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

/* ==================== 레이아웃 ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.container-fluid {
    width: 100%;
    padding: 20px;
}

/* ==================== 로그인 페이지 ==================== */
.login-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.login-box {
    background: var(--white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
    text-align: center;
}

.login-box p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    text-align: center;
}

/* ==================== 폼 요소 ==================== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.1);
}

.form-control:disabled {
    background-color: #f9f9f9;
    cursor: not-allowed;
}

/* ==================== 버튼 ==================== */
.btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease-in-out;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    color: var(--white);
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.btn-primary:hover:not(:disabled) {
    background-color: #357ab8;
    border-color: #357ab8;
}

.btn-success {
    color: var(--white);
    background-color: var(--success-color);
    border-color: var(--success-color);
}

.btn-success:hover:not(:disabled) {
    background-color: #4cae4c;
}

.btn-danger {
    color: var(--white);
    background-color: var(--danger-color);
    border-color: var(--danger-color);
}

.btn-danger:hover:not(:disabled) {
    background-color: #c9302c;
}

.btn-secondary {
    color: var(--text-color);
    background-color: var(--white);
    border-color: var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background-color: #f5f5f5;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

/* ==================== 알림 메시지 ==================== */
.alert {
    padding: 12px 16px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 13px;
}

.alert-success {
    color: #3c763d;
    background-color: #dff0d8;
    border-color: #d6e9c6;
}

.alert-danger {
    color: #a94442;
    background-color: #f2dede;
    border-color: #ebccd1;
}

.alert-warning {
    color: #8a6d3b;
    background-color: #fcf8e3;
    border-color: #faebcc;
}

.alert-info {
    color: #31708f;
    background-color: #d9edf7;
    border-color: #bce8f1;
}

/* ==================== 네비게이션 ==================== */
.navbar {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    gap: 20px;
    align-items: center;
}

.navbar-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.15s ease-in-out;
}

.navbar-menu a:hover {
    color: var(--primary-color);
}

.navbar-menu a.active {
    color: var(--accent-color);
    font-weight: 500;
}

/* ==================== 테이블 ==================== */
.table {
    width: 100%;
    margin-bottom: 20px;
    background-color: var(--white);
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: 600;
    color: var(--primary-color);
    background-color: #fafafa;
    font-size: 13px;
}

.table td {
    font-size: 14px;
}

.table tr:hover {
    background-color: #fafafa;
}

.table-striped tbody tr:nth-child(odd) {
    background-color: #fafafa;
}

/* ==================== 카드 ==================== */
.card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 20px;
}

.card-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 16px;
    color: var(--primary-color);
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    background-color: #fafafa;
}

/* ==================== 유틸리티 ==================== */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-muted {
    color: var(--text-secondary);
}

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }

.d-flex {
    display: flex;
}

.justify-between {
    justify-content: space-between;
}

.align-center {
    align-items: center;
}

.gap-10 {
    gap: 10px;
}

.hidden {
    display: none;
}

/* ==================== 모달 ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    overflow-y: auto;
}

.modal.show {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal-content {
    background-color: var(--white);
    border-radius: 8px;
    width: 100%;
    max-width: 600px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: modalFadeIn 0.2s ease-out;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    line-height: 1;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s ease-in-out;
}

.modal-close:hover {
    color: var(--primary-color);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

/* ==================== 로딩 스피너 ==================== */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 0.8s linear infinite;
}

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

/* ==================== 반응형 ==================== */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .login-box {
        padding: 30px 20px;
    }
    
    .navbar {
        flex-direction: column;
        gap: 10px;
    }
    
    .navbar-menu {
        width: 100%;
        justify-content: center;
    }
    
    .table {
        font-size: 12px;
    }
    
    .table th,
    .table td {
        padding: 8px;
    }
}