:root {
    --primary: #4a90e2;
    --primary-dark: #357abd;
    --sidebar-bg: #1e293b;
    --sidebar-hover: #334155;
    --sidebar-active: #4a90e2;
    --bg-main: #f8fafc;
    --text-main: #334155;
    --text-light: #94a3b8;
    --white: #ffffff;
    --border: #e2e8f0;
    --danger: #ef4444;
}

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

body.admin-body {
    font-family: 'Noto Sans KR', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow: hidden;
}

.admin-wrapper {
    display: flex;
    height: 100vh;
}

/* Sidebar Styling */
.admin-sidebar {
    width: 280px;
    background-color: var(--sidebar-bg);
    color: white;
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 10px rgba(0, 0, 0, 0.1);
    z-index: 100;
}

.sidebar-header {
    padding: 30px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.admin-logo-text {
    font-size: 2rem;
    background: #334155;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.sidebar-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 10px;
    overflow-y: auto;
}

.nav-item {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s;
    font-size: 0.95rem;
    color: var(--text-light);
}

.nav-item:hover {
    background-color: var(--sidebar-hover);
    color: white;
}

.nav-item.active {
    background-color: var(--sidebar-active);
    color: white;
    font-weight: 500;
}

.nav-icon {
    font-size: 1.2rem;
}

.nav-divider {
    height: 1px;
    background-color: rgba(255, 255, 255, 0.05);
    margin: 15px 10px;
}

.sidebar-footer {
    padding: 20px;
}

#homeBtn {
    width: 100%;
    padding: 12px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

#homeBtn:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Main Content Styling */
.admin-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.admin-header {
    height: 70px;
    background-color: var(--white);
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
}

.admin-header h1 {
    font-size: 1.4rem;
    color: var(--sidebar-bg);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

#logoutBtn {
    padding: 8px 16px;
    background-color: var(--danger);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.content-view {
    padding: 30px;
    overflow-y: auto;
    flex: 1;
}

/* CMS Edit Area Styles */
.section-container {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.sub-menu-tabs {
    display: flex;
    gap: 10px;
    border-bottom: 2px solid var(--border);
    margin-bottom: 25px;
}

.sub-tab {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: -2px;
}

.sub-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 700;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input[type="text"],
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
}

.upload-group {
    display: flex;
    gap: 10px;
}

.save-btn {
    background-color: var(--primary);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

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

/* User Table Styles */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.admin-table th,
.admin-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.admin-table th {
    background-color: #f1f5f9;
    font-weight: 600;
    color: var(--sidebar-bg);
}

.role-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.role-admin {
    background: #fee2e2;
    color: #b91c1c;
}

.role-student {
    background: #dcfce7;
    color: #15803d;
}

.role-subscriber {
    background: #e0f2fe;
    color: #0369a1;
}

.role-visitor {
    background: #f1f5f9;
    color: #475569;
}

/* Curriculum Specific Styles */
.week-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-top: 20px;
}

.week-btn {
    padding: 15px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.week-btn:hover {
    border-color: var(--primary);
    background: #f0f7ff;
}

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

.info-text {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

/* Payment Manager Styles */
.payment-toolbar {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
}

.action-btn {
    padding: 10px 20px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
}

.action-btn:hover {
    background: #f8fafc;
}

/* Toast */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

.toast {
    background: #1e293b;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    margin-bottom: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    gap: 10px;
    animation: slideIn 0.3s ease-out;
    opacity: 1;
}

.toast-buttons {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.toast-btn {
    padding: 5px 12px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
}

.toast-btn.confirm {
    background: var(--primary);
    color: white;
}

.toast-btn.cancel {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}
/* Image Upload Drag and Drop */
.image-upload-container {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #fafafa;
}

.image-upload-container:hover,
.image-upload-container.dragover {
    border-color: var(--primary);
    background: #f0f7ff;
}

.image-preview {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    overflow: hidden;
}

.image-preview img {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    border-radius: 8px;
}

.placeholder-text {
    color: var(--text-light);
    font-size: 0.95rem;
    text-align: center;
    padding: 40px 20px;
}

/* Form improvements */
.edit-area {
    padding: 20px 0;
}

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

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

.form-group input[type="text"],
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input[type="text"]:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

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

.save-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.save-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}