/* Base CSS Variables */
:root {
    /* Color Scheme */
    --bg-primary: #0b0e11;
    --bg-secondary: #1a1d25;
    --bg-panel: #2b3139;
    --border-color: #3a3f4a;
    --accent-color: #f0b90b;
    --success-color: #0ecb81;
    --error-color: #f6465d;
    --text-primary: #f0f0f0;
    --text-secondary: #999;

    /* Spacing */
    --padding-sm: 8px;
    --padding-md: 12px;
    --padding-lg: 20px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* Global Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Typography */
body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
        Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

/* Base Layout */
html,
body {
    height: 100%;
    width: 100%;
    overflow: hidden;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Main Layout */
.desktop-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

.chart-panel {
    width: 70%;
    height: 100vh;
    background-color: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.coins-panel {
    width: 30%;
    height: 100vh;
    background-color: var(--bg-secondary);
    display: flex;
    flex-direction: column;
} /* Chart Panel Styles */
.chart-header {
    padding: var(--padding-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-secondary);
}

.chart-title {
    font-weight: bold;
    font-size: 16px;
}

.chart-controls {
    display: flex;
    align-items: center;
    gap: var(--padding-md);
}

.chart-actions {
    display: flex;
    gap: 4px;
}

.chart-btn {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 30px;
    height: 30px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.chart-btn:hover {
    background-color: var(--border-color);
}

#chart-interval {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 14px;
}

.chart-container {
    flex: 1;
    position: relative;
    background-color: var(--bg-primary);
    overflow: hidden;
}

/* Chart Placeholder */
.chart-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    color: var(--text-secondary);
}

.placeholder-icon {
    font-size: 48px;
    margin-bottom: var(--padding-md);
}

.placeholder-text {
    font-size: 16px;
}

#price-chart {
    width: 100%;
    height: 100%;
}

.connection-status {
    position: absolute;
    bottom: 10px;
    right: 10px;
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    background-color: rgba(0, 0, 0, 0.5);
    color: var(--text-secondary);
}

/* Tab System */
.tab-container {
    display: flex;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
}

.tab-button {
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    padding: var(--padding-md) var(--padding-lg);
    cursor: pointer;
    font-size: 16px;
    position: relative;
    transition: color var(--transition-fast);
}

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

.tab-button.active {
    color: var(--accent-color);
}

.tab-button.active::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--accent-color);
}

.tab-alert-count {
    background-color: var(--error-color);
    color: white;
    border-radius: 50%;
    padding: 2px 6px;
    font-size: 12px;
    margin-left: 5px;
}

.tab-content {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: var(--padding-md);
}

.tab-content.active {
    display: block;
} /* Coins Tab Styles */
.filters-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px; /* Reduced gap */
    margin-bottom: var(--padding-md);
    align-items: center;
    justify-content: space-between;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 5px;
}

.symbol-filter-container {
    position: relative;
    display: flex;
    align-items: center;
}

#symbol-filter {
    width: 100px; /* Reduced width */
    padding: 4px 6px; /* Reduced padding */
    font-size: 13px;
}

#stock-select {
    width: 90px; /* Narrower dropdown */
    padding: 4px 6px; /* Reduced padding */
    font-size: 13px;
}

.clear-symbol-btn {
    position: absolute;
    right: 5px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 16px;
}

input,
select {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 5px 8px;
    border-radius: 4px;
}

#volume-filter {
    width: 50px; /* Narrower input */
    padding: 4px 6px; /* Reduced padding */
    font-size: 13px;
}

.refresh-btn {
    background-color: var(--accent-color);
    color: black;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    margin-left: auto;
}

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

.coins-table {
    width: 100%;
    border-collapse: collapse;
}

.coins-table th,
.coins-table td {
    padding: 8px;
    text-align: right;
    border-bottom: 1px solid var(--border-color);
}

.coins-table th:first-child,
.coins-table td:first-child {
    width: 80px; /* Limit symbol column width */
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sortable {
    cursor: pointer;
    position: relative;
}

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

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

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

.coin-symbol {
    font-weight: bold;
    cursor: pointer;
}

.coin-symbol:hover {
    color: var(--accent-color);
}

/* Alerts Tab Styles */
.alerts-container {
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.alerts-title {
    font-size: 16px;
    font-weight: bold;
}

.alerts-count {
    background-color: var(--bg-panel);
    color: var(--text-secondary);
    border-radius: 10px;
    padding: 2px 8px;
    font-size: 12px;
    margin-left: 5px;
}

.alerts-header-controls {
    display: flex;
    gap: 8px;
}

.clear-all-btn {
    background-color: var(--error-color);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
}

.alerts-list {
    flex: 1;
    overflow-y: auto;
}

.no-alerts {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100px;
    color: var(--text-secondary);
}

/* Trade Tab Styles */
.trade-form-container {
    padding: var(--padding-md);
}

.form-group {
    margin-bottom: var(--padding-md);
}

.button-group {
    display: flex;
    margin-top: 5px;
}

.button-group button {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-panel);
    color: var(--text-primary);
    cursor: pointer;
}

.button-group button:first-child {
    border-radius: 4px 0 0 4px;
}

.button-group button:last-child {
    border-radius: 0 4px 4px 0;
}

.button-group button.active {
    background-color: var(--accent-color);
    color: black;
}

.buy.active {
    background-color: var(--success-color) !important;
}

.sell.active {
    background-color: var(--error-color) !important;
}

.form-placeholder {
    padding: var(--padding-lg);
    text-align: center;
    color: var(--text-secondary);
    background-color: var(--bg-panel);
    border-radius: 4px;
} /* Responsive Design */
@media (max-width: 1200px) {
    .chart-panel {
        width: 55%;
    }
    .coins-panel {
        width: 45%;
    }
}

@media (max-width: 900px) {
    .desktop-container {
        flex-direction: column;
    }
    .chart-panel {
        width: 100%;
        height: 60vh;
    }
    .coins-panel {
        width: 100%;
        height: 40vh;
    }

    .filters-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .refresh-btn {
        margin-left: 0;
    }

    .tab-button {
        flex: 1;
        padding: var(--padding-md) var(--padding-sm);
        text-align: center;
    }
}

/* Accessibility Improvements */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Focus Styles for Accessibility */
:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    body {
        background-color: white;
        color: black;
    }

    .desktop-container {
        display: block;
    }

    .chart-panel,
    .coins-panel {
        width: 100%;
        height: auto;
        border: none;
    }

    .tab-content:not(.active) {
        display: block;
    }

    .tab-container,
    .chart-controls,
    .filters-bar,
    .refresh-btn,
    .clear-all-btn {
        display: none;
    }
}