:root {
    /* Colors */
    --bg-main: #EAF0F4;
    --bg-card: #FFFFFF;
    --bg-sidebar: #FFFFFF;
    --text-primary: #333333;
    --text-secondary: #6B7A87;
    --accent-blue: #00A3FF;
    --accent-blue-hover: #008be5;
    --accent-light-blue: #E6F4FF;
    --border-color: #E2E8ED;
    --badge-active-bg: #E8F5E9;
    --badge-active-text: #2E7D32;
    --badge-error-bg: #FFEBEE;
    --badge-error-text: #C62828;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    
    /* Structure */
    --sidebar-width: 260px;
    --header-height: 60px;
    --card-radius: 12px;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 14px;
    height: 100vh;
    overflow: hidden;
    display: flex;
}

/* Dashboard Layout */
.dashboard-container {
    display: flex;
    width: 100%;
    height: 100%;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 20px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    letter-spacing: -0.5px;
}

.sidebar-header span {
    color: var(--accent-blue);
}

.sidebar-menu {
    flex: 1;
    overflow-y: auto;
    padding: 20px 0;
}

.menu-group-title {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 600;
    padding: 10px 20px;
    margin-top: 10px;
    letter-spacing: 0.5px;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 12px 20px 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    cursor: pointer;
    font-weight: 500;
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
}

.menu-item:hover {
    background-color: #f8fafc;
    color: var(--text-primary);
}

.menu-item.active {
    background-color: var(--accent-light-blue);
    color: var(--accent-blue);
    border-left-color: var(--accent-blue);
}

.menu-item:active {
    transform: scale(0.96);
    background-color: #f1f5f9;
}

#btn-logout {
    margin: 5px 16px;
    border-radius: 8px;
    border-left: none;
    background-color: #fef2f2;
    transition: all 0.2s ease;
}

#btn-logout:hover {
    background-color: #fee2e2;
    color: #ef4444 !important;
}

#btn-logout:active {
    transform: scale(0.95);
    background-color: #fca5a5 !important;
    color: #b91c1c !important;
}

.menu-item-icon {
    width: 20px;
    height: 20px;
    margin-right: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

/* Accordion Menus */
.accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    user-select: none;
    border-bottom: 1px solid #f1f5f9;
}

.accordion-header:hover {
    background-color: #f8fafc;
}

.accordion-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.accordion-arrow {
    transition: transform 0.3s ease;
    font-size: 10px;
    color: var(--text-secondary);
}

.accordion-section.active .accordion-arrow {
    transform: rotate(180deg);
}

.submenu {
    display: none;
    background-color: #f8fafc;
    border-bottom: 1px solid var(--border-color);
}

.accordion-section.active .submenu {
    display: block;
}

.submenu .menu-item {
    padding-left: 45px;
    font-size: 13px;
    border-left: 3px solid transparent;
}

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

/* Top Header */
.top-header {
    height: var(--header-height);
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    z-index: 5;
}

.header-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.balance-pill {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.balance-pill span {
    color: var(--text-primary);
    font-weight: 600;
}

/* Button Styles */
.btn {
    border: none;
    border-radius: 6px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-family);
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:active {
    transform: scale(0.95);
}

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

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: #f8fafc;
    border-color: #cbd5e1;
}

.btn-danger {
    background-color: #fef2f2;
    color: var(--badge-error-text);
    border: 1px solid #fee2e2;
}
.btn-danger:hover {
    background-color: #fee2e2;
}

.btn-success {
    background-color: var(--badge-active-bg);
    color: var(--badge-active-text);
    border: 1px solid #c8e6c9;
}
.btn-success:hover {
    background-color: #c8e6c9;
}

/* Page Content */
.page-content {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Cards */
.card {
    background-color: var(--bg-card);
    border-radius: var(--card-radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    border: 1px solid var(--border-color);
    padding: 24px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Forms and Inputs */
.form-group {
    margin-bottom: 15px;
}

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

.form-control {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: #fff;
    color: var(--text-primary);
    font-family: var(--font-family);
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 163, 255, 0.1);
}

.form-control[readonly] {
    background-color: #f8fafc;
    color: var(--text-secondary);
}

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

.input-group .form-control {
    flex: 1;
}

/* Radios and Checkboxes */
.check-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-primary);
    user-select: none;
}

.check-label input[type="radio"],
.check-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-blue);
}

/* Grids */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

/* Tables */
.table-container {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th {
    background-color: #f8fafc;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 12px 16px;
    font-size: 13px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.table tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.badge-active {
    background-color: var(--badge-active-bg);
    color: var(--badge-active-text);
}

.badge-error {
    background-color: var(--badge-error-bg);
    color: var(--badge-error-text);
}

.badge-warning {
    background-color: #fff3e0;
    color: #e65100;
}

/* Console Panel */
.console-card {
    background-color: #1e293b;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.console-header {
    background-color: #0f172a;
    padding: 10px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.console-title {
    color: #94a3b8;
    font-size: 12px;
    font-weight: 600;
    font-family: 'Fira Code', monospace;
}

.console-output {
    padding: 16px;
    color: #32d74b;
    font-family: 'Fira Code', monospace;
    font-size: 12px;
    height: 250px;
    overflow-y: auto;
    white-space: pre-wrap;
}

/* Specific Page Overrides */
.left-panel {
    display: none;
}

.left-panel.active {
    display: flex;
    flex-direction: column;
}

/* Language selector override */
#lang-selector {
    background: #f1f5f9;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    font-weight: 500;
    outline: none;
}