:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --light-gray: #f5f5f5;
    --dark-gray: #333;
    --border-color: #ddd;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Malgun Gothic', sans-serif;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: #f9f9f9;
}

/* Navbar 스타일 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 0 20px;
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar-brand {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

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

.navbar-item {
    margin-left: 20px;
    color: var(--dark-gray);
    text-decoration: none;
    font-size: 14px;
    cursor: pointer;
}

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

.user-profile {
    display: flex;
    align-items: center;
}

.user-profile img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    margin-right: 10px;
}

/* 레이아웃 구조 */
.container {
    display: flex;
    margin-top: 60px;
    flex: 1;
}

/* 좌측 메뉴 스타일 */
.left-menu {
    width: 240px;
    background-color: #fff;
    border-right: 1px solid var(--border-color);
    padding: 20px 0;
    height: calc(100vh - 60px);
    position: fixed;
    top: 60px;
    left: 0;
    overflow-y: auto;
}

.menu-section {
    margin-bottom: 15px;
}

.menu-title {
    padding: 10px 20px;
    font-weight: bold;
    color: #888;
    font-size: 13px;
    text-transform: uppercase;
}

.menu-item {
    padding: 12px 20px;
    display: flex;
    align-items: center;
    color: var(--dark-gray);
    text-decoration: none;
    font-size: 14px;
    cursor: pointer;
}

.menu-item:hover, .menu-item.active {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
}

.menu-item i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

/* 메인 콘텐츠 영역 */
.content {
    flex: 1;
    margin-left: 240px;
    padding: 20px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.page-title {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--dark-gray);
}

/* 대시보드 스타일 */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.dashboard-card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

.card-title {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--dark-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title i {
    color: var(--primary-color);
}

.card-count {
    font-size: 32px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.card-desc {
    color: #888;
    font-size: 14px;
}

/* 테이블 스타일 */
.table-container {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: 20px;
}

.table-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-title {
    font-size: 16px;
    font-weight: bold;
    color: var(--dark-gray);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th, .data-table td {
    padding: 12px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-weight: 600;
    color: #555;
    background-color: #f9f9f9;
}

.data-table tbody tr:hover {
    background-color: rgba(52, 152, 219, 0.05);
}

.badge {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.badge-pending {
    background-color: #f1c40f;
    color: #fff;
}

.badge-approved {
    background-color: #2ecc71;
    color: #fff;
}

.badge-rejected {
    background-color: #e74c3c;
    color: #fff;
}

.action-btn {
    padding: 5px 10px;
    border-radius: 4px;
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 12px;
}

.action-btn:hover {
    background-color: var(--secondary-color);
}

/* 폼 스타일 */
.form-container {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
}

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

.form-group-join {
    margin-top: 15px;
    text-align: center;
}

.form-group-join a {
    text-decoration: underline;
    color: #0065a9;
}
.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-gray);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 17px;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.form-checkbox {
    margin-right: 8px;
}

.btn {
    padding: 10px 20px;
    border-radius: 4px;
    border: none;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--secondary-color);
}

.btn-secondary {
    background-color: #e0e0e0;
    color: var(--dark-gray);
}

.btn-secondary:hover {
    background-color: #ccc;
}

/* 달력 스타일 */
.calendar-container {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.calendar-title {
    font-size: 18px;
    font-weight: bold;
    color: var(--dark-gray);
}

.calendar-nav {
    display: flex;
    align-items: center;
}

.calendar-nav-btn {
    background: none;
    border: none;
    font-size: 18px;
    color: var(--dark-gray);
    cursor: pointer;
    padding: 5px 10px;
}

.calendar-nav-btn:hover {
    color: var(--primary-color);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
}

.calendar-day-header {
    text-align: center;
    padding: 10px;
    font-weight: 600;
    color: #555;
}

.calendar-day {
    padding: 10px;
    text-align: center;
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    min-height: 70px;
    border: 1px solid var(--border-color);
}

.calendar-day:hover {
    background-color: rgba(52, 152, 219, 0.1);
}

.calendar-day.current {
    background-color: rgba(52, 152, 219, 0.2);
}

.calendar-day.other-month {
    color: #bbb;
    background-color: #f9f9f9;
}

.day-number {
    position: absolute;
    top: 5px;
    right: 5px;
    font-size: 14px;
}

.event-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--primary-color);
    margin-right: 2px;
}

.day-events {
    font-size: 10px;
    margin-top: 20px;
    text-align: left;
    overflow: hidden;
}

.day-event {
    padding: 2px 4px;
    border-radius: 2px;
    background-color: rgba(52, 152, 219, 0.2);
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 공지사항 스타일 */
.notice-item {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.notice-title {
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--dark-gray);
}

.notice-date {
    font-size: 12px;
    color: #888;
}

.notice-content {
    margin-top: 10px;
    font-size: 14px;
    color: #555;
}

/* 로그인 페이지 스타일 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 90%;
    height: 90vh;
    margin: 0 auto;
    background-color: #f9f9f9;
}

.login-form {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: 30px;
    width: 400px;
}

.login-logo {
    text-align: center;
    margin-bottom: 30px;
}

.login-logo h1 {
    color: #0065a9;
    font-size: 23px;
}

.login-title {
    text-align: center;
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--dark-gray);
}

.login-btn {
    width: 100%;
    padding: 12px;
    font-size: 16px;
}

.login-footer {
    margin-top: 20px;
    text-align: center;
    font-size: 14px;
    color: #888;
}

/* 반응형 스타일 */
@media (max-width: 992px) {
    .left-menu {
        width: 200px;
    }
    
    .content {
        margin-left: 200px;
    }
    
    .dashboard-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .left-menu {
        width: 0;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .left-menu.show {
        width: 240px;
        transform: translateX(0);
    }
    
    .content {
        margin-left: 0;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
}