:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #64748b;
    --accent: #10b981;
    --danger: #ef4444;
    --background: #f8fafc;
    --surface: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-light: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
}

header {
    background: var(--surface);
    padding: 20px 24px;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

header h1 {
    font-size: 28px;
    color: var(--text);
    margin: 0;
}

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

.account-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 16px;
    background: var(--background);
    border-radius: 12px;
}

#accountAddress {
    font-family: monospace;
    color: var(--text);
    font-size: 14px;
}

.contract-info {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--background);
    border-radius: 12px;
    font-size: 13px;
}

.contract-info strong {
    color: var(--text-light);
    font-weight: 600;
    font-size: 12px;
}

.contract-info a {
    color: var(--primary);
    text-decoration: none;
    font-family: monospace;
    font-size: 13px;
}

.contract-info a:hover {
    text-decoration: underline;
}

/* Main Layout: Two Column */
.main-layout {
    display: grid;
    grid-template-columns: 1fr 450px;
    gap: 24px;
    align-items: start;
}

/* Order Book Panel (Left Side) */
.order-book-panel {
    background: var(--surface);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 20px;
    display: flex;
    flex-direction: column;
    min-width: 0;
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
}

.order-book-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}

.order-book-header h2 {
    font-size: 20px;
    color: var(--text);
    margin: 0;
}

.btn-sm {
    padding: 8px 12px;
    font-size: 12px;
    background: var(--background);
    border: 1px solid var(--border) !important;
    border-radius: 12px;
    color: var(--text-light);
}

.btn-sm:hover:not(:disabled) {
    background: rgba(59, 130, 246, 0.05);
    border-color: var(--primary) !important;
    color: var(--primary);
}

.order-book-controls {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    margin-bottom: 16px;
}

.order-book-filters {
    display: flex;
    flex-direction: row;
    gap: 12px;
    flex: 1;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.filter-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 13px;
    transition: all 0.2s;
    background: var(--surface);
}

.filter-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.filter-select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 13px;
    background-color: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3e%3cpath fill='%2364748b' d='M6 9L1 4h10z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 32px;
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.filter-select:hover {
    border-color: var(--primary);
}

.filter-select option[value=""]:disabled {
    color: var(--text-light);
    font-weight: 400;
}

/* Make select appear with lighter text when showing disabled placeholder */
select.filter-select:invalid {
    color: var(--text-light);
}

.filter-select option[value="custom"] {
    color: var(--accent);
    font-weight: 600;
    border-top: 1px solid var(--border);
}

.order-book-stats {
    display: flex;
    gap: 16px;
    padding: 8px 16px;
    background: var(--background);
    border-radius: 12px;
    border: 1px solid var(--border);
    height: fit-content;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 70px;
}

.stat-label {
    font-size: 10px;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
    font-weight: 600;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-top: -6px;
}

/* Order Book Table */
.order-book-table-container {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: auto;
}

.order-book-table-container::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.order-book-table-container::-webkit-scrollbar-track {
    background: var(--background);
    border-radius: 3px;
}

.order-book-table-container::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.order-book-table-container::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

.order-book-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}

.order-book-table thead {
    position: sticky;
    top: 0;
    background: var(--background);
    z-index: 10;
}

.order-book-table th {
    padding: 10px 8px;
    text-align: left;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border);
    vertical-align: middle;
}

/* Shared pressable style for interactive elements */
.pressable {
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-light);
    background: var(--background);
}

.pressable:hover {
    color: var(--text);
    background: rgba(59, 130, 246, 0.05);
}

.order-book-table th.sortable {
    user-select: none;
}

.order-book-table th.sortable:hover {
    color: var(--primary);
}

.order-book-table th.sortable .sort-icon {
    opacity: 0.3;
    margin-left: 4px;
    font-size: 11px;
}

.order-book-table th.sortable:hover .sort-icon {
    opacity: 0.6;
}

.order-book-table th.sortable.sorted .sort-icon {
    opacity: 1;
    color: var(--primary);
}

.order-book-table tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background-color 0.2s;
    cursor: pointer;
}

.order-book-table tbody tr:hover {
    background: #f1f5f9;
}

.order-book-table tbody tr.selected {
    background: #eff6ff;
    border-left: 3px solid var(--primary);
}

.order-book-table td {
    padding: 10px 8px;
    vertical-align: middle;
}

.order-book-table td:first-child {
    font-family: monospace;
    font-size: 11px;
    color: var(--text-light);
}

.order-book-table a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.order-book-table a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.token-pair {
    font-family: monospace;
    font-weight: 500;
    font-size: 11px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.order-status {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-active {
    background: #d1fae5;
    color: #065f46;
}

.status-partial {
    background: #fef3c7;
    color: #92400e;
}

.status-expired {
    background: #fee2e2;
    color: #991b1b;
}

.order-book-table .action-btn {
    padding: 6px 12px;
    font-size: 11px;
    border-radius: 4px;
    border: none;
    background: var(--primary);
    color: white;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.order-book-table .action-btn:hover {
    background: var(--primary-dark);
}

.order-book-table tr.selected .action-btn {
    background: var(--success);
    color: white;
}

/* Checkbox Column */
.checkbox-col {
    width: 50px;
    vertical-align: middle;
}

.order-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
    border-radius: 4px;
    vertical-align: middle;
    margin: 0;
}

.order-checkbox:hover {
    opacity: 0.8;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-light);
}

.empty-state p {
    font-size: 16px;
    margin-bottom: 8px;
}

.empty-state small {
    font-size: 12px;
}

/* Pagination Controls */
.pagination-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    margin-top: 12px;
    border-top: 2px solid var(--border);
}

.pagination-btn {
    padding: 6px 12px;
    font-size: 12px;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.pagination-btn:hover:not(:disabled) {
    background: rgba(59, 130, 246, 0.05);
    border-color: var(--primary);
    color: var(--primary);
}

.pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-info {
    font-size: 12px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 6px;
}

.pagination-info #currentPage,
.pagination-info #totalPages,
.pagination-info #pageRange,
.pagination-info #totalOrders2 {
    color: var(--text);
    font-weight: 600;
}

.pagination-divider {
    color: var(--border);
}

/* Trading Panel (Right Side) */
.trading-panel {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Enhanced Execution Section */
.execution-section {
    background: var(--surface);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--primary);
}

.execution-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}

.execution-title {
    display: flex;
    gap: 12px;
    align-items: center;
}

.execution-icon {
    width: 32px;
    height: 32px;
    background: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.execution-title h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

.execution-subtitle {
    margin: 2px 0 0 0;
    font-size: 12px;
    color: var(--text-light);
}

.btn-close {
    background: var(--background);
    border: 1px solid var(--border);
    font-size: 18px;
    color: var(--text);
    cursor: pointer;
    padding: 6px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    border-radius: 8px;
}

.btn-close:hover {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}

.execution-summary {
    font-size: 13px;
    color: var(--text);
    margin-bottom: 16px;
    padding: 16px;
    background: var(--background);
    border-radius: 10px;
    line-height: 1.8;
    border: 1px solid var(--border);
}

.execution-summary strong {
    color: var(--text);
    font-weight: 600;
    font-family: monospace;
}

.execution-summary a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid var(--primary);
    transition: opacity 0.2s;
}

.execution-summary a:hover {
    opacity: 0.7;
}

/* Bulk Order Summary */
.bulk-summary {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.bulk-section {
    padding: 12px;
    background: var(--surface);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.bulk-section strong {
    display: block;
    margin-bottom: 8px;
    color: var(--text);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.bulk-section ul {
    margin: 0;
    padding-left: 20px;
    list-style: none;
}

.bulk-section ul li {
    padding: 4px 0;
    font-size: 13px;
    color: var(--text);
}

.bulk-section ul li::before {
    content: '•';
    color: var(--primary);
    font-weight: bold;
    display: inline-block;
    width: 1em;
    margin-left: -1em;
}

.execution-actions {
    background: transparent;
    border-radius: 0;
    padding: 0;
}

.execution-actions .form-group {
    margin-bottom: 12px;
}

.execution-actions .form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--text);
    font-size: 13px;
}

.execution-actions .button-group {
    margin-top: 12px;
}

.fill-input-compact {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.2s;
    background: var(--surface);
}

.fill-input-compact:focus {
    outline: none;
    border-color: var(--primary);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
}

.tabs-container{
    background: var(--background);
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.tabs {
    display: flex;
    gap: 0;
    margin-bottom: 0;
    background: transparent;
    padding: 0;
    border-bottom: 2px solid var(--border);
}

.tab-btn {
    flex: 1;
    padding: 12px 20px;
    border: none;
    font-weight: 500;
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    text-align: center;
    border-radius: 0;
}

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

.tab-btn.active {
    background: var(--surface);
    color: var(--primary);
    font-weight: 600;
    border-bottom-color: var(--primary);
}

.tab-content {
    background: var(--surface);
    padding: 20px;
    border-radius: 0 0 12px 12px;
}

.tab-pane {
    display: none;
}

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

.tab-pane h2 {
    margin-bottom: 24px;
    color: var(--text);
}

.info-text {
    color: var(--text-light);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--text);
    font-size: 13px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.2s;
    font-family: inherit;
    background-color: var(--surface);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group small {
    display: block;
    margin-top: 4px;
    color: var(--text-light);
    font-size: 11px;
    line-height: 1.4;
    transition: color 0.2s;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
    font-family: monospace;
    font-size: 13px;
}

/* Date/Time Input Styling */
input[type="datetime-local"] {
    cursor: pointer;
    background-color: var(--surface);
    position: relative;
    font-weight: 400;
    color: var(--text-light);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    border-radius: 10px;
}

input[type="datetime-local"]:valid {
    color: var(--text);
}

input[type="datetime-local"]:hover {
    border-color: var(--primary);
}

input[type="datetime-local"]:focus {
    background-color: var(--surface);
}

input[type="datetime-local"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233b82f6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3crect x='3' y='4' width='18' height='18' rx='2' ry='2'%3e%3c/rect%3e%3cline x1='16' y1='2' x2='16' y2='6'%3e%3c/line%3e%3cline x1='8' y1='2' x2='8' y2='6'%3e%3c/line%3e%3cline x1='3' y1='10' x2='21' y2='10'%3e%3c/line%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 18px 18px;
    width: 24px;
    height: 24px;
    margin: 0 2px;
    padding: 0;
    opacity: 0.7;
    transition: opacity 0.2s;
    border-radius: 6px;
}

input[type="datetime-local"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

/* Style the calendar popup */
input[type="datetime-local"]::-webkit-datetime-edit {
    padding: 2px 0;
}

input[type="datetime-local"]::-webkit-datetime-edit-fields-wrapper {
    padding: 2px 0;
}

input[type="datetime-local"]::-webkit-datetime-edit-text {
    color: var(--text-light);
    padding: 0 4px;
}

input[type="datetime-local"]::-webkit-datetime-edit-month-field,
input[type="datetime-local"]::-webkit-datetime-edit-day-field,
input[type="datetime-local"]::-webkit-datetime-edit-year-field,
input[type="datetime-local"]::-webkit-datetime-edit-hour-field,
input[type="datetime-local"]::-webkit-datetime-edit-minute-field,
input[type="datetime-local"]::-webkit-datetime-edit-ampm-field {
    color: var(--text);
    padding: 4px 6px;
    border-radius: 4px;
    background: transparent;
    transition: background 0.2s;
}

input[type="datetime-local"]::-webkit-datetime-edit-month-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-day-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-year-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-hour-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-minute-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-ampm-field:focus {
    background: rgba(59, 130, 246, 0.1);
    outline: none;
}

.custom-token-input {
    margin-top: 8px;
    animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.exchange-rate {
    padding: 12px 16px;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-radius: 10px;
    margin-bottom: 16px;
    font-weight: 600;
    text-align: center;
    color: var(--primary);
    border: 1px solid #bfdbfe;
    font-size: 14px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
}

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

.btn-secondary:hover:not(:disabled) {
    background: #475569;
}

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

.btn-accent:hover:not(:disabled) {
    background: #059669;
}

.btn-block {
    width: 100%;
    margin-top: 8px;
}

.button-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.signed-order {
    margin-top: 24px;
    padding: 20px;
    background: var(--background);
    border-radius: 12px;
    border: 2px solid var(--success);
}

.signed-order h3 {
    margin-bottom: 12px;
    color: var(--text);
}

.success-msg {
    color: var(--success);
    margin-bottom: 12px;
    font-weight: 500;
}

.order-details {
    margin-bottom: 12px;
}

.order-details pre {
    background: var(--surface);
    padding: 12px;
    border-radius: 10px;
    overflow-x: auto;
    font-size: 12px;
    border: 1px solid var(--border);
}

.orders-display {
    margin-top: 20px;
}

.orders-display h3 {
    margin-bottom: 12px;
}

#marketOrdersList,
#allOrdersList {
    display: grid;
    gap: 12px;
}

.order-card {
    padding: 16px;
    background: var(--background);
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.order-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.order-card.selected {
    border-color: var(--primary);
    background: #eff6ff;
}

.order-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 12px;
}

.order-seller {
    font-family: monospace;
    font-size: 12px;
    color: var(--text-light);
}

.order-status {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.order-status.fillable {
    background: #d1fae5;
    color: #065f46;
}

.order-status.expired {
    background: #fee2e2;
    color: #991b1b;
}

.order-status.filled {
    background: #e2e8f0;
    color: #475569;
}

.order-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.order-field {
    display: flex;
    flex-direction: column;
}

.order-field label {
    font-size: 11px;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.order-field value {
    font-weight: 500;
    color: var(--text);
    word-break: break-all;
}

.order-rate {
    padding: 12px;
    background: var(--surface);
    border-radius: 6px;
    text-align: center;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
}

.order-actions {
    display: flex;
    gap: 8px;
}

.order-preview {
    padding: 16px;
    background: var(--background);
    border-radius: 12px;
    border: 1px solid var(--border);
    margin-bottom: 16px;
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    background: var(--surface);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    transform: translateX(500px);
    transition: transform 0.3s;
    z-index: 1000;
    border-left: 4px solid var(--primary);
}

.notification.show {
    transform: translateX(0);
}

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

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

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

.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-right: 8px;
}

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

@media (max-width: 1200px) {
    .main-layout {
        grid-template-columns: 1fr 400px;
        gap: 16px;
    }

    .order-book-panel {
        padding: 16px;
    }

    .tab-content {
        padding: 24px;
    }
}

@media (max-width: 900px) {
    .main-layout {
        grid-template-columns: 1fr;
    }

    .order-book-panel {
        position: static;
        max-height: 500px;
    }

    .trading-panel {
        order: -1; /* Show trading panel first on smaller screens */
    }
}

@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    .main-layout {
        grid-template-columns: 1fr;
    }

    .order-book-panel {
        position: static;
        max-height: 400px;
        order: 2;
    }

    .trading-panel {
        order: 1;
    }

    header {
        flex-direction: column;
        gap: 16px;
        align-items: stretch;
    }

    .header-info {
        flex-direction: column;
    }

    .tabs {
        flex-wrap: wrap;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .tab-content {
        padding: 20px;
    }

    .button-group {
        flex-direction: column;
    }

    .button-group .btn {
        width: 100%;
    }

    /* Make order book controls stack on mobile */
    .order-book-controls {
        flex-direction: column;
    }

    .order-book-stats {
        width: 100%;
        justify-content: center;
    }

    /* Make order book table scrollable on mobile */
    .order-book-table-container {
        overflow-x: auto;
    }

    .order-book-table {
        font-size: 10px;
    }

    .order-book-table th,
    .order-book-table td {
        padding: 6px 4px;
    }

    /* Adjust execution section on mobile */
    .execution-title {
        flex-direction: column;
        gap: 12px;
    }

    .execution-icon {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
}