/* NSE Options Chain Trading Platform - Professional Dark Theme */
/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-bg: #0a0a0b;
    --secondary-bg: #141414;
    --tertiary-bg: #1e1e1e;
    --quaternary-bg: #2a2a2a;
    
    --primary-text: #ffffff;
    --secondary-text: #b0b0b0;
    --muted-text: #808080;
    
    --success: #00d4aa;
    --danger: #ff4757;
    --warning: #ffa502;
    --info: #3742fa;
    --gold: #ffbe0b;
    
    --border-color: #333333;
    --hover-bg: #333333;
    --active-bg: #404040;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #00d4aa 0%, #00a085 100%);
    --gradient-danger: linear-gradient(135deg, #ff4757 0%, #c44569 100%);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    font-size: 14px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--primary-bg);
    color: var(--primary-text);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Header Styles */
.header {
    background: var(--secondary-bg);
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--gold);
}

.logo i {
    color: var(--success);
}

.market-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.status-indicator.live {
    background: var(--success);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.time {
    font-family: 'Courier New', monospace;
    color: var(--gold);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.profile-btn {
    background: none;
    border: none;
    color: var(--primary-text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.profile-btn:hover {
    color: var(--gold);
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
}

.nav-tabs {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-tab {
    background: none;
    border: none;
    color: var(--secondary-text);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-bottom: 3px solid transparent;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-tab:hover {
    color: var(--primary-text);
    background: var(--hover-bg);
}

.nav-tab.active {
    color: var(--gold);
    border-bottom-color: var(--gold);
}

/* Trading Mode Toggle */
.trading-mode-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toggle-switch {
    position: relative;
    width: 180px;
    height: 40px;
}

.toggle-switch input {
    display: none;
}

.toggle-switch label {
    display: block;
    width: 100%;
    height: 100%;
    background: var(--tertiary-bg);
    border-radius: 20px;
    position: relative;
    cursor: pointer;
    overflow: hidden;
    border: 2px solid var(--border-color);
    transition: all var(--transition-medium);
}

.toggle-switch label::before {
    content: '';
    position: absolute;
    width: 85px;
    height: 32px;
    background: var(--gradient-primary);
    border-radius: 16px;
    top: 2px;
    left: 2px;
    transition: transform var(--transition-medium);
    z-index: 1;
}

.toggle-switch input:checked + label::before {
    transform: translateX(85px);
}

.toggle-switch .beginner,
.toggle-switch .professional {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
    transition: color var(--transition-medium);
}

.toggle-switch .beginner {
    left: var(--spacing-md);
    color: var(--primary-text);
}

.toggle-switch .professional {
    right: var(--spacing-md);
    color: var(--secondary-text);
}

.toggle-switch input:checked + label .beginner {
    color: var(--secondary-text);
}

.toggle-switch input:checked + label .professional {
    color: var(--primary-text);
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 120px);
    padding: var(--spacing-lg);
    position: relative;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

/* Options Page Styles */
.options-header {
    background: var(--secondary-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.controls-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.symbol-selector,
.expiry-selector {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.symbol-selector label,
.expiry-selector label {
    font-size: 0.9rem;
    color: var(--secondary-text);
    font-weight: 500;
}

.symbol-selector select,
.expiry-selector select {
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    color: var(--primary-text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-width: 150px;
}

.symbol-selector select:hover,
.expiry-selector select:hover {
    border-color: var(--gold);
}

.symbol-selector select:focus,
.expiry-selector select:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 2px rgba(255, 190, 11, 0.2);
}

.spot-price {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.spot-price label {
    font-size: 0.9rem;
    color: var(--secondary-text);
    font-weight: 500;
}

.spot-price .price {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--primary-text);
}

.spot-price .change {
    font-size: 0.9rem;
    font-weight: 600;
}

.change.positive {
    color: var(--success);
}

.change.negative {
    color: var(--danger);
}

.refresh-btn {
    background: var(--gradient-primary);
    border: none;
    color: var(--primary-text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
    margin-left: auto;
}

.refresh-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.refresh-btn i {
    animation: rotate 2s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.search-filter-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 300px;
}

.search-box i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-text);
}

.search-box input {
    width: 100%;
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    color: var(--primary-text);
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 2.5rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 2px rgba(255, 190, 11, 0.2);
}

.quick-filters {
    display: flex;
    gap: var(--spacing-sm);
}

.filter-btn {
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    color: var(--secondary-text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    color: var(--primary-text);
    border-color: var(--gold);
}

.filter-btn.active {
    background: var(--gold);
    color: var(--primary-bg);
    border-color: var(--gold);
}

.filter-btn.atm-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--primary-text);
}

.advanced-filters-btn {
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    color: var(--secondary-text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.advanced-filters-btn:hover {
    color: var(--primary-text);
    border-color: var(--gold);
}

/* Options Chain Table */
.options-chain-container {
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.table-wrapper {
    overflow-x: auto;
}

.options-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.table-header th {
    background: var(--tertiary-bg);
    padding: var(--spacing-md);
    text-align: center;
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
    color: var(--primary-text);
    position: sticky;
    top: 0;
    z-index: 10;
}

.call-header {
    background: var(--tertiary-bg);
    color: var(--success) !important;
    border-right: 1px solid var(--border-color);
}

.put-header {
    background: var(--tertiary-bg);
    color: var(--danger) !important;
    border-left: 1px solid var(--border-color);
}

.strike-header {
    background: var(--quaternary-bg) !important;
    color: var(--gold) !important;
    font-weight: bold;
    min-width: 120px;
    position: relative;
}

.strike-title {
    font-size: 0.8rem;
    margin-bottom: var(--spacing-xs);
}

.call-put-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    text-transform: uppercase;
}

.call-label {
    color: var(--success);
}

.put-label {
    color: var(--danger);
}

.sortable {
    cursor: pointer;
    user-select: none;
    position: relative;
}

.sortable:hover {
    background: var(--hover-bg);
}

.sortable::after {
    content: '⇅';
    position: absolute;
    right: 4px;
    opacity: 0.5;
    font-size: 0.8rem;
}

/* Table Body Styles */
.options-table tbody tr {
    transition: all var(--transition-fast);
    border-bottom: 1px solid var(--border-color);
}

.options-table tbody tr:hover {
    background: var(--hover-bg);
}

.options-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: center;
    vertical-align: middle;
}

.strike-cell {
    background: var(--quaternary-bg);
    font-weight: bold;
    font-size: 1rem;
    color: var(--gold);
    cursor: pointer;
    position: relative;
}

.strike-cell:hover {
    background: var(--active-bg);
    color: var(--warning);
}

.strike-cell.atm {
    background: var(--gradient-primary);
    color: var(--primary-text);
    box-shadow: inset 0 0 0 2px var(--gold);
}

.call-data {
    border-right: 1px solid var(--border-color);
}

.put-data {
    border-left: 1px solid var(--border-color);
}

.ltp-cell {
    font-weight: 600;
    cursor: pointer !important;
    transition: all var(--transition-fast);
    position: relative;
    user-select: none;
}

.call-ltp, .put-ltp {
    cursor: pointer !important;
}

.strike-cell {
    cursor: pointer !important;
    font-weight: bold;
    color: var(--gold);
    text-align: center;
}

.ltp-cell:hover {
    background: var(--active-bg);
    transform: scale(1.05);
}

.call-ltp:hover {
    color: var(--success);
    box-shadow: inset 0 0 0 1px var(--success);
}

.put-ltp:hover {
    color: var(--danger);
    box-shadow: inset 0 0 0 1px var(--danger);
}

.oi-cell {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
}

.vol-cell {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
}

.change-cell.positive {
    color: var(--success);
    font-weight: 600;
}

.change-cell.negative {
    color: var(--danger);
    font-weight: 600;
}

.iv-cell,
.delta-cell {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--secondary-text);
}

/* Trading Mode Visibility */
.trading-mode-only {
    display: table-cell;
}

body:not(.professional-mode) .trading-mode-only {
    display: none;
}

/* Basket Sidebar */
.basket-sidebar {
    position: fixed;
    right: -400px;
    top: 0;
    width: 400px;
    height: 100vh;
    background: var(--secondary-bg);
    border-left: 2px solid var(--border-color);
    transition: right var(--transition-medium);
    z-index: 1001;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.basket-sidebar.active {
    right: 0;
}

.basket-header {
    padding: var(--spacing-lg);
    background: var(--tertiary-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.basket-header h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gold);
}

.close-basket {
    background: none;
    border: none;
    color: var(--secondary-text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.close-basket:hover {
    color: var(--danger);
}

.basket-content {
    padding: var(--spacing-lg);
}

.empty-basket {
    text-align: center;
    padding: var(--spacing-xl) 0;
    color: var(--secondary-text);
}

.empty-basket i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.basket-item {
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-fast);
}

.basket-item:hover {
    border-color: var(--gold);
}

.basket-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.basket-item-title {
    font-weight: 600;
    color: var(--primary-text);
}

.remove-item {
    background: none;
    border: none;
    color: var(--secondary-text);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.remove-item:hover {
    color: var(--danger);
}

.basket-item-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
}

.basket-item-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.basket-summary {
    background: var(--tertiary-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.strategy-analysis h4 {
    color: var(--gold);
    margin-bottom: var(--spacing-md);
}

.analysis-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.analysis-row:last-child {
    border-bottom: none;
}

.basket-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-sm);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex: 1;
}

.btn-primary {
    background: var(--gradient-success);
    color: var(--primary-text);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--tertiary-bg);
    color: var(--secondary-text);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    color: var(--primary-text);
    border-color: var(--gold);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn var(--transition-medium);
}

.large-modal .modal-content {
    max-width: 800px;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

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

.modal-header h3 {
    color: var(--gold);
}

.close-modal {
    background: none;
    border: none;
    color: var(--secondary-text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-lg);
}

/* Form Styles */
.trade-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.option-info {
    background: var(--tertiary-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 500;
    color: var(--secondary-text);
}

.form-group input,
.form-group select {
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    color: var(--primary-text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 2px rgba(255, 190, 11, 0.2);
}

.radio-group {
    display: flex;
    gap: var(--spacing-lg);
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.radio-group input[type="radio"] {
    width: auto;
}

.risk-analysis {
    background: var(--tertiary-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.risk-analysis h4 {
    color: var(--gold);
    margin-bottom: var(--spacing-md);
}

.risk-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.risk-item:last-child {
    border-bottom: none;
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    min-width: 300px;
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn var(--transition-medium);
    position: relative;
}

.toast.success {
    border-color: var(--success);
}

.toast.error {
    border-color: var(--danger);
}

.toast.warning {
    border-color: var(--warning);
}

.toast.info {
    border-color: var(--info);
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.toast-title {
    font-weight: 600;
    color: var(--primary-text);
}

.toast-close {
    background: none;
    border: none;
    color: var(--secondary-text);
    cursor: pointer;
}

.toast-message {
    color: var(--secondary-text);
    font-size: 0.9rem;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2500;
    backdrop-filter: blur(3px);
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.loading-spinner i {
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: var(--spacing-md);
}

.loading-spinner span {
    color: var(--secondary-text);
}

/* Dashboard Styles */
.dashboard {
    text-align: center;
    padding: var(--spacing-xl);
}

.dashboard h2 {
    color: var(--gold);
    margin-bottom: var(--spacing-xl);
}

.quick-access {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.quick-btn {
    background: var(--gradient-primary);
    border: none;
    color: var(--primary-text);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 200px;
}

.quick-btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.quick-btn i {
    font-size: 2rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .controls-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .refresh-btn {
        margin-left: 0;
        align-self: flex-start;
    }
    
    .basket-sidebar {
        width: 100%;
        right: -100%;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 13px;
    }
    
    .header-top {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: stretch;
    }
    
    .nav-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-tab {
        white-space: nowrap;
        min-width: max-content;
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .options-header {
        padding: var(--spacing-md);
    }
    
    .search-filter-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: auto;
    }
    
    .quick-filters {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .options-table {
        font-size: 0.8rem;
    }
    
    .options-table th,
    .options-table td {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .modal-content {
        margin: var(--spacing-md);
        width: calc(100% - 2rem);
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .basket-actions {
        flex-direction: column;
    }
    
    .quick-access {
        flex-direction: column;
        align-items: stretch;
    }
    
    .trading-mode-toggle {
        justify-content: center;
    }
    
    .toggle-switch {
        width: 160px;
        height: 36px;
    }
    
    .toggle-switch label::before {
        width: 75px;
        height: 28px;
    }
    
    .toggle-switch input:checked + label::before {
        transform: translateX(75px);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 12px;
    }
    
    .toast-container {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        top: var(--spacing-sm);
    }
    
    .toast {
        min-width: auto;
    }
    
    .toggle-switch {
        width: 140px;
        height: 32px;
    }
    
    .toggle-switch label::before {
        width: 65px;
        height: 24px;
    }
    
    .toggle-switch input:checked + label::before {
        transform: translateX(65px);
    }
    
    .toggle-switch .beginner,
    .toggle-switch .professional {
        font-size: 0.7rem;
    }
}

/* Print Styles */
@media print {
    .header,
    .basket-sidebar,
    .modal,
    .toast-container,
    .loading-overlay {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
    }
    
    .options-table {
        font-size: 0.7rem;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --primary-bg: #000000;
        --secondary-bg: #1a1a1a;
        --tertiary-bg: #333333;
        --primary-text: #ffffff;
        --secondary-text: #cccccc;
        --border-color: #555555;
    }
}

/* Focus styles for keyboard navigation */
button:focus,
input:focus,
select:focus,
.nav-tab:focus,
.filter-btn:focus,
.ltp-cell:focus,
.strike-cell:focus {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--tertiary-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gold);
}

/* Selection styles */
::selection {
    background: var(--gold);
    color: var(--primary-bg);
}

/* Utility classes */
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }
.text-gold { color: var(--gold) !important; }
.text-muted { color: var(--muted-text) !important; }

.bg-success { background-color: var(--success) !important; }
.bg-danger { background-color: var(--danger) !important; }
.bg-warning { background-color: var(--warning) !important; }
.bg-info { background-color: var(--info) !important; }

.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }

.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }

.font-weight-bold { font-weight: bold !important; }
.font-weight-normal { font-weight: normal !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-xs) !important; }
.mb-2 { margin-bottom: var(--spacing-sm) !important; }
.mb-3 { margin-bottom: var(--spacing-md) !important; }
.mb-4 { margin-bottom: var(--spacing-lg) !important; }
.mb-5 { margin-bottom: var(--spacing-xl) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--spacing-xs) !important; }
.mt-2 { margin-top: var(--spacing-sm) !important; }
.mt-3 { margin-top: var(--spacing-md) !important; }
.mt-4 { margin-top: var(--spacing-lg) !important; }
.mt-5 { margin-top: var(--spacing-xl) !important; }

/* ============ ENHANCED TRADING FEATURES STYLES ============ */

/* Orders & Positions Page */
.orders-container {
    padding: var(--spacing-lg);
    max-width: 100%;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.page-header h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gold);
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.order-filters {
    display: flex;
    gap: var(--spacing-xs);
}

.orders-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--secondary-text);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition-fast);
    border-bottom: 2px solid transparent;
    font-weight: 500;
}

.tab-btn:hover {
    color: var(--primary-text);
    background: var(--hover-bg);
}

.tab-btn.active {
    color: var(--gold);
    border-bottom-color: var(--gold);
}

.tab-content {
    display: none;
}

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

/* Tables */
.orders-table-wrapper,
.positions-table-wrapper,
.history-table-wrapper,
.holdings-table-wrapper {
    background: var(--secondary-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.orders-table,
.positions-table,
.history-table,
.holdings-table {
    width: 100%;
    border-collapse: collapse;
}

.orders-table th,
.positions-table th,
.history-table th,
.holdings-table th {
    background: var(--tertiary-bg);
    color: var(--secondary-text);
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}

.orders-table td,
.positions-table td,
.history-table td,
.holdings-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.orders-table tbody tr:hover,
.positions-table tbody tr:hover,
.history-table tbody tr:hover,
.holdings-table tbody tr:hover {
    background: var(--hover-bg);
}

/* Status Badges */
.status-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-pending {
    background: var(--warning);
    color: var(--primary-bg);
}

.status-executed {
    background: var(--success);
    color: var(--primary-bg);
}

.status-cancelled {
    background: var(--danger);
    color: var(--primary-text);
}

/* Action Types */
.action-type.buy {
    color: var(--success);
    font-weight: 600;
}

.action-type.sell {
    color: var(--danger);
    font-weight: 600;
}

.option-type.call {
    color: var(--success);
    font-weight: 600;
}

.option-type.put {
    color: var(--danger);
    font-weight: 600;
}

/* P&L Colors */
.pnl-positive {
    color: var(--success) !important;
}

.pnl-negative {
    color: var(--danger) !important;
}

.pnl-amount {
    font-weight: bold;
    font-size: 1.1rem;
}

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 500;
}

.btn-sm.btn-primary {
    background: var(--info);
    color: var(--primary-text);
}

.btn-sm.btn-danger {
    background: var(--danger);
    color: var(--primary-text);
}

.btn-sm.btn-secondary {
    background: var(--quaternary-bg);
    color: var(--primary-text);
    border: 1px solid var(--border-color);
}

.btn-sm.btn-info {
    background: var(--info);
    color: var(--primary-text);
}

.btn-sm:hover {
    transform: translateY(-1px);
    opacity: 0.9;
}

/* Positions Summary */
.positions-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.summary-card {
    background: var(--secondary-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.summary-card h4 {
    color: var(--secondary-text);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    font-weight: 500;
}

.summary-card .pnl-amount,
.summary-card .position-count,
.summary-card .margin-used {
    font-size: 1.3rem;
    font-weight: bold;
}

/* Portfolio Overview */
.portfolio-container {
    padding: var(--spacing-lg);
}

.portfolio-summary {
    margin-bottom: var(--spacing-xl);
}

.summary-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.summary-card.large {
    grid-column: span 1;
}

.summary-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.summary-card .card-header h3 {
    color: var(--gold);
    margin: 0;
}

.summary-card .card-header i {
    color: var(--success);
    font-size: 1.2rem;
}

.summary-card .card-value {
    text-align: left;
}

.summary-card .amount {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-text);
}

.summary-card .change-indicator {
    display: block;
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

/* Portfolio Analytics */
.portfolio-analytics {
    margin-bottom: var(--spacing-xl);
}

.analytics-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.analytics-card {
    background: var(--secondary-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.analytics-card h4 {
    color: var(--gold);
    margin-bottom: var(--spacing-lg);
}

.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.metric:last-child {
    border-bottom: none;
}

.metric-label {
    color: var(--secondary-text);
    font-size: 0.9rem;
}

.metric-value {
    font-weight: bold;
    color: var(--primary-text);
}

/* Exposure Chart */
.exposure-chart {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.exposure-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.exposure-label {
    min-width: 80px;
    font-size: 0.9rem;
    color: var(--secondary-text);
}

.exposure-bar {
    flex: 1;
    height: 8px;
    background: var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.exposure-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success), var(--gold));
    transition: width var(--transition-medium);
}

.exposure-value {
    min-width: 40px;
    text-align: right;
    font-weight: bold;
    color: var(--gold);
}

/* Holdings Section */
.holdings-section {
    margin-top: var(--spacing-xl);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-header h3 {
    color: var(--gold);
}

.holdings-filters {
    display: flex;
    gap: var(--spacing-xs);
}

/* History Filters */
.history-filters {
    display: flex;
    gap: var(--spacing-lg);
    align-items: end;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--secondary-bg);
    border-radius: var(--radius-md);
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.filter-group label {
    color: var(--secondary-text);
    font-size: 0.9rem;
    font-weight: 500;
}

.filter-group input,
.filter-group select {
    padding: var(--spacing-sm);
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--primary-text);
}

.filter-group input:focus,
.filter-group select:focus {
    outline: none;
    border-color: var(--gold);
}

.apply-filter {
    background: var(--info);
    color: var(--primary-text);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-fast);
}

.apply-filter:hover {
    background: #2c37e6;
}

/* Advanced Order Options */
.advanced-order-options {
    background: var(--tertiary-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    border: 1px solid var(--border-color);
}

.advanced-order-options .form-group {
    margin-bottom: var(--spacing-md);
}

.advanced-order-options .form-group:last-child {
    margin-bottom: 0;
}

.advanced-order-options label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--secondary-text);
}

.advanced-order-options input[type="checkbox"] {
    accent-color: var(--gold);
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--secondary-text);
}

.empty-state i {
    font-size: 3rem;
    color: var(--muted-text);
    margin-bottom: var(--spacing-md);
}

.empty-state h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-text);
}

.empty-state p {
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .summary-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .analytics-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .header-actions {
        justify-content: space-between;
    }
    
    .order-filters {
        flex-wrap: wrap;
    }
    
    .summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .positions-summary {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .history-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        flex-direction: row;
        align-items: center;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 480px) {
    .summary-grid {
        grid-template-columns: 1fr;
    }
    
    .positions-summary {
        grid-template-columns: 1fr;
    }
    
    .orders-table-wrapper,
    .positions-table-wrapper,
    .history-table-wrapper,
    .holdings-table-wrapper {
        overflow-x: auto;
    }
    
    .orders-table,
    .positions-table,
    .history-table,
    .holdings-table {
        min-width: 600px;
    }
}