/* --- CSS Variables & Design System --- */
:root {
    --bg-app: #070b13;
    --bg-sidebar: #0f1626;
    --bg-card: rgba(21, 32, 54, 0.65);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-active: rgba(99, 102, 241, 0.4);
    
    --color-primary: #6366f1; /* Indigo */
    --color-primary-hover: #4f46e5;
    --color-secondary: #0ea5e9; /* Sky Blue */
    --color-success: #10b981; /* Emerald Green */
    --color-success-bg: rgba(16, 185, 129, 0.12);
    --color-danger: #f43f5e; /* Rose Red */
    --color-danger-bg: rgba(244, 63, 94, 0.12);
    --color-warning: #f59e0b; /* Amber */
    --color-warning-bg: rgba(245, 158, 11, 0.12);
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dark: #64748b;
    
    --font-heading: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    
    --glass-blur: blur(14px);
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Global Styling --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
}

body {
    background-color: var(--bg-app);
    color: var(--text-main);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Webkit Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* --- Layout --- */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
}

.logo-icon {
    font-size: 24px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.4));
    font-weight: bold;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-text span {
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
    cursor: pointer;
}

.nav-item i {
    width: 18px;
    height: 18px;
    transition: var(--transition-fast);
}

.nav-item:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
    color: var(--text-main);
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.15) 0%, rgba(99, 102, 241, 0.03) 100%);
    border-left: 3px solid var(--color-primary);
    padding-left: 13px;
}

.nav-item.active i {
    color: var(--color-primary);
}

.sidebar-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-online {
    background-color: var(--color-success);
    box-shadow: 0 0 10px var(--color-success);
    animation: statusPulse 2s infinite;
}

.status-offline {
    background-color: var(--color-danger);
    box-shadow: 0 0 10px var(--color-danger);
}

.status-text {
    font-weight: 500;
}

.last-updated {
    font-size: 11px;
    color: var(--text-dark);
}

/* --- Main Content --- */
.main-content {
    margin-left: 260px;
    flex-grow: 1;
    padding: 40px;
    max-width: 1400px;
}

/* --- Header --- */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.welcome-text h1 {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.welcome-text p {
    color: var(--text-muted);
    font-size: 14px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.status-pill {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.25px;
    text-transform: uppercase;
}

.status-dry-run {
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-live {
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* --- Tabs Content --- */
.tab-content {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.tab-content.active {
    display: block;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

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

.btn-accent:hover {
    background-color: #0284c7;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.35);
}

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

.btn-danger:hover {
    background-color: #e11d48;
    box-shadow: 0 4px 12px rgba(244, 63, 94, 0.35);
}

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

.btn-success:hover {
    background-color: #059669;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

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

/* --- KPI Stats Grid --- */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.kpi-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

.kpi-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.15);
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.kpi-icon i {
    width: 22px;
    height: 22px;
}

.icon-price {
    background-color: rgba(99, 102, 241, 0.15);
    color: var(--color-primary);
}

.icon-profit {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.icon-positions {
    background-color: rgba(14, 165, 233, 0.15);
    color: var(--color-secondary);
}

.icon-rebalance {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.kpi-details h3 {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.kpi-value {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 2px;
}

.kpi-meta {
    font-size: 11px;
    color: var(--text-dark);
}

.value-profit {
    color: var(--color-success);
}

/* --- Cards --- */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    backdrop-filter: var(--glass-blur);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
}

.badge {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
}

.card-body {
    padding: 24px;
}

/* --- Charts Row & Layout --- */
.dashboard-row {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 24px;
    margin-bottom: 32px;
}

.chart-container {
    height: 380px;
    position: relative;
    width: 100%;
}

.tabs-sub {
    display: flex;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius-sm);
    padding: 2px;
}

.sub-tab-btn {
    padding: 6px 14px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.sub-tab-btn.active {
    background-color: var(--bg-sidebar);
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

.ladder-list-container {
    height: 380px;
    overflow-y: auto;
    padding-right: 4px;
    scroll-behavior: smooth;
}

.ladder-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ladder-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: var(--border-radius-sm);
    border-left: 3px solid transparent;
    font-size: 13px;
}

.ladder-item.buy {
    border-left-color: var(--color-success);
}

.ladder-item.sell {
    border-left-color: var(--color-danger);
}

.ladder-item.current-price-level {
    border-left-color: var(--color-secondary);
    background-color: rgba(14, 165, 233, 0.12);
    border: 1px solid rgba(14, 165, 233, 0.4);
    box-shadow: 0 0 10px rgba(14, 165, 233, 0.15);
    padding: 12px 14px;
}

.ladder-item.current-price-level .ladder-price {
    color: var(--color-secondary);
    font-size: 14px;
    font-weight: 700;
}

.ladder-price {
    font-weight: 600;
}

.ladder-qty {
    color: var(--text-muted);
    font-family: monospace;
}

.empty-message {
    text-align: center;
    color: var(--text-dark);
    font-size: 13px;
    padding-top: 150px;
}

/* --- Forms & Configuration --- */
.card-form {
    max-width: 900px;
    margin: 0 auto;
}

.form-section {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 24px;
    margin-bottom: 24px;
}

.form-section:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.form-section h3 {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 18px;
    color: var(--text-main);
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 16px;
}

.form-row:last-child {
    margin-bottom: 0;
}

.form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 10px 14px;
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 14px;
    outline: none;
    transition: var(--transition-fast);
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-group select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.15);
}

.form-group input[readonly] {
    opacity: 0.6;
    cursor: not-allowed;
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 10px;
    padding-top: 10px;
}

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

.checkbox-group label {
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-main);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 30px;
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
}

/* --- Tables & Lists --- */
.card-table {
    box-shadow: var(--shadow-sm);
}

.count-badge {
    background-color: var(--color-primary);
    color: #fff;
    border: none;
}

.table-container {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 13px;
}

.data-table th {
    padding: 14px 18px;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.1);
}

.data-table td {
    padding: 14px 18px;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
    font-family: var(--font-body);
}

.data-table tbody tr {
    transition: var(--transition-fast);
}

.data-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.empty-table {
    text-align: center;
    color: var(--text-dark);
    padding: 40px 0 !important;
}

.mt-4 {
    margin-top: 32px;
}

/* --- Debug Tab --- */
.grid-2-col {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

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

.input-with-button input {
    flex-grow: 1;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 10px 14px;
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 14px;
    outline: none;
}

.preset-buttons {
    margin-top: 20px;
}

.preset-buttons label {
    font-size: 12px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.preset-buttons .button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.btn-preset {
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-weight: 500;
    transition: var(--transition-fast);
    cursor: pointer;
}

.btn-preset:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
}

.danger-card {
    border-color: rgba(244, 63, 94, 0.3);
}

.danger-zone-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    padding: 16px;
    background-color: rgba(244, 63, 94, 0.05);
    border: 1px solid rgba(244, 63, 94, 0.1);
    border-radius: var(--border-radius-md);
}

.danger-description h3 {
    font-size: 14px;
    color: var(--color-danger);
    margin-bottom: 4px;
}

.danger-description p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
}

/* --- Toast Notification --- */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: #1e293b;
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius-sm);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    transform: translateY(100px);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease;
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-icon {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.toast-message {
    font-size: 13px;
    font-weight: 500;
}

/* --- Animations --- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes statusPulse {
    0% { opacity: 0.6; box-shadow: 0 0 4px var(--color-success); }
    50% { opacity: 1; box-shadow: 0 0 12px var(--color-success); }
    100% { opacity: 0.6; box-shadow: 0 0 4px var(--color-success); }
}

/* --- Hide Mobile Nav by default on desktop --- */
.mobile-nav {
    display: none;
}

/* --- Responsive Layout --- */
@media (max-width: 1024px) {
    .dashboard-row {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        width: 80px;
        padding: 16px 12px;
    }
    
    .logo-text, .status-text, .last-updated, .connection-status span:last-child {
        display: none;
    }
    
    .nav-item {
        justify-content: center;
        padding: 12px;
    }
    
    .main-content {
        margin-left: 80px;
        padding: 24px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
        margin-bottom: 64px;
        padding: 16px;
    }
    
    .top-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        margin-bottom: 24px;
    }
    
    .welcome-text h1 {
        font-size: 22px;
    }
    
    .kpi-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    
    .kpi-card {
        padding: 16px;
        gap: 12px;
    }
    
    .kpi-icon {
        width: 36px;
        height: 36px;
    }
    
    .kpi-icon i {
        width: 18px;
        height: 18px;
    }
    
    .kpi-value {
        font-size: 18px;
    }
    
    .chart-container {
        height: 280px;
    }
    
    .grid-2-col {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .form-row {
        flex-direction: column;
        gap: 12px;
    }
    
    .checkbox-group {
        padding-top: 0;
    }
    
    .card-body {
        padding: 16px;
    }
    
    .table-container {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .data-table {
        min-width: 600px;
    }
    
    .mobile-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 64px;
        background-color: var(--bg-sidebar);
        border-top: 1px solid var(--border-color);
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
        z-index: 1000;
        justify-content: space-around;
        align-items: center;
        backdrop-filter: var(--glass-blur);
    }
    
    .mobile-nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
        color: var(--text-muted);
        text-decoration: none;
        font-size: 10px;
        font-weight: 600;
        flex: 1;
        padding: 8px 0;
        transition: var(--transition-fast);
        border-top: 3px solid transparent;
        height: 100%;
        justify-content: center;
    }
    
    .mobile-nav-item i {
        width: 20px;
        height: 20px;
        transition: var(--transition-fast);
    }
    
    .mobile-nav-item:hover {
        color: var(--text-main);
    }
    
    .mobile-nav-item.active {
        color: var(--text-main);
        border-top-color: var(--color-primary);
        background: linear-gradient(180deg, rgba(99, 102, 241, 0.08) 0%, rgba(99, 102, 241, 0.0) 100%);
    }
    
    .mobile-nav-item.active i {
        color: var(--color-primary);
    }
}

/* --- Period Selector --- */
.period-selector-container {
    display: flex;
    justify-content: flex-start;
    margin-bottom: 24px;
}

.period-selector {
    display: flex;
    background-color: var(--bg-sidebar);
    border-radius: var(--border-radius-md);
    padding: 4px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.period-btn {
    background: none;
    border: none;
    outline: none;
    color: var(--text-dark);
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.period-btn:hover {
    color: var(--text-main);
}

.period-btn.active {
    background-color: var(--color-primary);
    color: #ffffff;
}

/* --- Trades Summary Box --- */
.trades-summary-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
    height: 100%;
    justify-content: center;
}

.trades-stat-box {
    padding: 20px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.trades-stat-box:hover {
    transform: translateY(-2px);
}

.buy-stat {
    background-color: rgba(239, 68, 68, 0.05);
    border-left: 4px solid var(--color-danger);
}

.sell-stat {
    background-color: rgba(16, 185, 129, 0.05);
    border-left: 4px solid var(--color-success);
}

.trades-stat-box .stat-title {
    font-size: 13px;
    color: var(--text-dark);
    font-weight: 500;
    margin-bottom: 6px;
}

.trades-stat-box .stat-value {
    font-size: 32px;
    font-weight: 800;
    font-family: var(--font-display);
    margin-bottom: 4px;
}

.buy-stat .stat-value {
    color: var(--color-danger);
}

.sell-stat .stat-value {
    color: var(--color-success);
}

.trades-stat-box .stat-sub {
    font-size: 12px;
    color: var(--text-muted);
    font-family: monospace;
}

/* --- Segment Controller for Dashboard/Performance --- */
.mobile-segment-container {
    display: none;
    margin-bottom: 20px;
    width: 100%;
    justify-content: center;
}

.segment-control {
    display: inline-flex;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 4px;
}

.segment-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.segment-btn:hover {
    color: var(--text-light);
}

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

/* Base segment visibility rules */
.dashboard-segment-content {
    display: block; /* Desktop shows both */
}

@media (max-width: 768px) {
    .mobile-segment-container {
        display: flex;
    }
    
    .dashboard-segment-content {
        display: none; /* Mobile hides by default */
    }
    
    .dashboard-segment-content.active-segment {
        display: block; /* Mobile shows active only */
    }
}

/* --- Mode Selector & Sidebar Categories --- */
.menu-category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 700;
    margin: 20px 0 8px 12px;
    opacity: 0.8;
    cursor: pointer;
    user-select: none;
    transition: color 0.2s ease;
}

.menu-category-header:hover {
    color: var(--text-dark);
}

.category-chevron {
    width: 14px;
    height: 14px;
    transition: transform 0.2s ease;
}

.menu-category-header.expanded .category-chevron {
    transform: rotate(180deg);
}

.menu-subitems {
    max-height: 500px;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.menu-subitems.collapsed {
    max-height: 0 !important;
}

.mode-selector {
    display: flex;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 3px;
    gap: 4px;
}

.mode-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
}

.mode-btn:hover {
    color: var(--text-light);
}

.mode-btn.active.btn-sim {
    background-color: var(--color-primary); /* Blue/indigo */
    color: white;
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.3);
}

.mode-btn.active.btn-live {
    background-color: var(--color-success); /* Emerald green */
    color: white;
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.3);
}

/* --- Mobile Mode Header --- */
.mobile-mode-header {
    display: none;
}

@media (max-width: 768px) {
    .mobile-mode-header {
        display: flex;
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(15, 23, 42, 0.85);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        padding: 10px 16px;
        gap: 12px;
        width: 100%;
        box-sizing: border-box;
        margin-bottom: 16px;
    }
    
    .mobile-mode-header .mode-btn {
        flex: 1;
        padding: 10px;
        font-size: 13px;
        font-weight: 700;
        text-transform: uppercase;
        border-radius: 8px;
        border: 1px solid rgba(255, 255, 255, 0.05);
        background: rgba(255, 255, 255, 0.02);
        color: var(--text-muted);
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        cursor: pointer;
        transition: all 0.2s ease;
    }
    
    .top-header .mode-selector {
        display: none !important;
    }
}