/* Import Google Font for logo/title */
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Text:ital@1&display=swap');

:root {
    --bg-color: #f5f5f7;
    --card-bg: rgba(255, 255, 255, 0.9);
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --accent-color: #0071e3;
    /* Apple-style blue */
    --accent-hover: #0058b0;
    --border-color: rgba(0, 0, 0, 0.1);
    --up-color: #34c759;
    --down-color: #ff3b30;
    --glass-border: 1px solid rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    background-image: radial-gradient(circle at 50% 0%, #ffffff 0%, var(--bg-color) 70%);
    color: var(--text-primary);
    height: 100vh;
    /* Fallback for older browsers */
    height: 100dvh;
    /* Dynamic viewport height - accounts for mobile browser UI */
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-bottom: var(--glass-border);
    z-index: 10;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.logo {
    font-family: 'DM Serif Text', 'SF Pro Display', 'SF Pro Text', serif;
    font-size: 1.4rem;
    font-weight: 400;
    font-style: normal;
    letter-spacing: 0.12em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
}

.controls {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

/* Pair Controls */
.pair-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.edit-btn {
    background: rgba(0, 0, 0, 0.04);
    border: var(--glass-border);
    border-radius: 8px;
    padding: 0.5rem 0.6rem;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s ease;
    color: var(--text-primary);
}

.edit-btn:hover {
    background: rgba(0, 0, 0, 0.08);
    border-color: var(--accent-color);
}

/* Dropdown */
.select-wrapper {
    position: relative;
}

select {
    appearance: none;
    background: rgba(0, 0, 0, 0.04);
    border: var(--glass-border);
    color: var(--text-primary);
    padding: 0.5rem 2.5rem 0.5rem 1rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

select:hover {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.15);
}

select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.select-arrow {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* Timeframe Tabs */
.timeframes {
    display: flex;
    background: rgba(0, 0, 0, 0.04);
    padding: 0.25rem;
    border-radius: 8px;
    gap: 0.25rem;
}

.tf-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.tf-btn:hover {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.04);
}

.tf-btn.active {
    background: rgba(0, 0, 0, 0.08);
    color: var(--accent-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

/* Main Content */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1rem;
    gap: 1rem;
    position: relative;
}

.chart-container {
    flex: 1;
    background: var(--card-bg);
    border-radius: 12px;
    border: var(--glass-border);
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

#tv-chart {
    width: 100%;
    height: 100%;
    position: relative;
}

/* Footprint Canvas Overlay */
#footprint-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 3;
}

/* Chart Legend */
.chart-legend {
    position: absolute;
    top: 8px;
    left: 12px;
    z-index: 5;
    display: flex;
    gap: 16px;
    font-size: 11px;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
    font-weight: 500;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 4px;
    backdrop-filter: blur(4px);
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.legend-item::before {
    content: '';
    display: inline-block;
    width: 12px;
    height: 3px;
    border-radius: 2px;
}

.legend-item.ema-fast::before {
    background-color: #fcd535;
}

.legend-item.ema-slow::before {
    background-color: #8750db;
}

.legend-item.vwap::before {
    background-color: #3b82f6;
}

.legend-item.rsi::before {
    background-color: #e91e63;
}

.legend-item.volume::before {
    background-color: #26a69a;
}

.legend-item.footprint::before {
    background: linear-gradient(90deg, #26a69a, #ef5350);
}

.legend-item.price-gap::before {
    background-color: #f59e0b;
}

/* Pane legend positioning */
.volume-legend-pane,
.rsi-legend-pane {
    position: absolute;
}

/* Loading State */
.loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0, 0, 0, 0.08);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
    z-index: 20;
    display: none;
}

.loader.active {
    display: block;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

/* ==================== Modal Base ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

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

.modal {
    background: var(--card-bg);
    border: var(--glass-border);
    border-radius: 12px;
    width: 400px;
    max-width: 90vw;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: var(--glass-border);
}

.modal-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

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

.modal-body {
    padding: 1.25rem;
}

/* Token Form */
.add-token-form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.add-token-form input {
    flex: 1;
    background: rgba(0, 0, 0, 0.03);
    border: var(--glass-border);
    border-radius: 8px;
    padding: 0.6rem 1rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    text-transform: uppercase;
}

.add-token-form input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.add-token-form button {
    background: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0.6rem 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.add-token-form button:hover {
    background: var(--accent-hover);
}

.add-token-form button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.validation-msg {
    font-size: 0.85rem;
    padding: 0.5rem 0;
    min-height: 1.5rem;
}

.validation-msg.success {
    color: var(--up-color);
}

.validation-msg.error {
    color: var(--down-color);
}

.validation-msg.loading {
    color: var(--text-secondary);
}

.token-list {
    max-height: 300px;
    overflow-y: auto;
}

.token-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0.8rem;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 6px;
    margin-bottom: 0.5rem;
}

.token-item:hover {
    background: rgba(0, 0, 0, 0.04);
}

.token-name {
    font-weight: 500;
    color: var(--text-primary);
}

.token-remove {
    background: none;
    border: none;
    color: var(--down-color);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.token-remove:hover {
    opacity: 1;
}

.token-item.default .token-remove {
    display: none;
}

.token-item.default::after {
    content: 'default';
    font-size: 0.7rem;
    color: var(--text-secondary);
    padding: 2px 6px;
    background: rgba(0, 0, 0, 0.04);
    border-radius: 4px;
}

/* Settings Button */
.settings-btn {
    background: rgba(0, 0, 0, 0.04);
    border: var(--glass-border);
    border-radius: 8px;
    color: var(--text-secondary);
    padding: 0.45rem 0.65rem;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.settings-btn:hover {
    color: var(--accent-color);
    background: rgba(0, 0, 0, 0.08);
    border-color: var(--accent-color);
}

/* ==================== Settings Modal ==================== */

.settings-modal {
    width: 480px;
    max-width: 95vw;
    max-height: 85vh;
    overflow-y: auto;
}

.settings-section {
    margin-bottom: 1.25rem;
}

.settings-section:last-of-type {
    margin-bottom: 0;
}

.settings-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    margin: 0 0 0.75rem 0;
    padding-bottom: 0.5rem;
    border-bottom: var(--glass-border);
}

/* Source Selector */
.source-selector {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.source-option {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0.55rem 0.75rem;
    border-radius: 8px;
    transition: all 0.15s ease;
}

.source-option:hover {
    background: rgba(0, 0, 0, 0.04);
}

.source-option input[type="radio"] {
    margin-right: 0.6rem;
    accent-color: var(--accent-color);
    width: 15px;
    height: 15px;
    cursor: pointer;
}

.source-option span {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.source-option input[type="radio"]:checked+span {
    color: var(--accent-color);
}

/* Layout Selector */
.layout-selector {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.layout-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.75rem;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.layout-btn:hover {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.15);
    color: var(--text-primary);
}

.layout-btn.active {
    background: rgba(0, 113, 227, 0.08);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.layout-icon {
    font-size: 6px;
    line-height: 1.1;
    letter-spacing: 1px;
    display: inline-block;
    min-width: 16px;
    text-align: center;
}

/* ==================== Multi-Pane Grid ==================== */
.chart-grid {
    flex: 1;
    display: grid;
    gap: 4px;
    min-height: 0;
}

.chart-grid[data-layout="2x1"] {
    grid-template-rows: 1fr 1fr;
    grid-template-columns: 1fr;
}

.chart-grid[data-layout="2x2"] {
    grid-template-rows: 1fr 1fr;
    grid-template-columns: 1fr 1fr;
}

.chart-grid[data-layout="3x2"] {
    grid-template-rows: 1fr 1fr 1fr;
    grid-template-columns: 1fr 1fr;
}

.chart-grid[data-layout="3x3"] {
    grid-template-rows: 1fr 1fr 1fr;
    grid-template-columns: 1fr 1fr 1fr;
}

.chart-grid[data-layout="1x3"] {
    grid-template-rows: 1fr;
    grid-template-columns: 1fr 1fr 1fr;
}

.chart-grid[data-layout="2x3"] {
    grid-template-rows: 1fr 1fr;
    grid-template-columns: 1fr 1fr 1fr;
}

/* Each chart pane in multi-pane mode */
.chart-pane {
    background: var(--card-bg);
    border-radius: 8px;
    border: var(--glass-border);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
    min-height: 0;
}

.pane-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.02);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    flex-shrink: 0;
    z-index: 2;
}

.pane-pair-select {
    appearance: none;
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.08);
    color: var(--text-primary);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
}

.pane-pair-select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.pane-tf-label {
    font-size: 0.65rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
}

.pane-chart-wrap {
    flex: 1;
    position: relative;
    min-height: 0;
}

.pane-chart-el {
    width: 100%;
    height: 100%;
}

.pane-legend {
    position: absolute;
    top: 4px;
    left: 6px;
    z-index: 5;
    display: flex;
    gap: 6px;
    font-size: 9px;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
    font-weight: 500;
    flex-wrap: wrap;
}

.pane-legend .legend-item {
    padding: 2px 5px;
    font-size: 9px;
    gap: 3px;
}

.pane-legend .legend-item::before {
    width: 8px;
    height: 2px;
}

/* Pane Settings Button & Popover */
.pane-settings-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 2px 6px;
    opacity: 0.4;
    transition: opacity 0.2s;
    color: var(--text-secondary);
}

.pane-settings-btn:hover {
    opacity: 1;
}

.pane-settings-btn.has-override {
    opacity: 0.8;
    color: var(--accent-color);
}

.pane-settings-popover {
    position: absolute;
    top: 28px;
    right: 4px;
    z-index: 100;
    background: var(--card-bg);
    border: var(--glass-border);
    border-radius: 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
    padding: 10px;
    min-width: 220px;
    max-height: 320px;
    overflow-y: auto;
    font-size: 0.75rem;
    backdrop-filter: blur(12px);
}

.pane-override-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 6px;
    margin-bottom: 6px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    font-weight: 600;
    font-size: 0.8rem;
}

.pane-override-toggle {
    position: relative;
    width: 32px;
    height: 18px;
}

.pane-override-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.pane-override-slider {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.12);
    border-radius: 9px;
    cursor: pointer;
    transition: 0.2s;
}

.pane-override-slider::before {
    content: '';
    position: absolute;
    left: 2px;
    top: 2px;
    width: 14px;
    height: 14px;
    background: #fff;
    border-radius: 50%;
    transition: 0.2s;
}

.pane-override-toggle input:checked+.pane-override-slider {
    background: var(--accent-color);
}

.pane-override-toggle input:checked+.pane-override-slider::before {
    transform: translateX(14px);
}

.pane-settings-body {
    display: none;
}

.pane-settings-body.active {
    display: block;
}

.pane-ind-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 0;
    gap: 6px;
}

.pane-ind-row label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    cursor: pointer;
}

.pane-ind-row input[type="checkbox"] {
    accent-color: var(--accent-color);
    width: 13px;
    height: 13px;
}

.pane-ind-row .pane-inline-input {
    width: 42px;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    padding: 2px 4px;
    font-size: 0.7rem;
    background: rgba(255, 255, 255, 0.8);
}

.pane-ind-row .pane-inline-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Indicator Rows */
.indicator-row {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.indicator-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.indicator-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
}

/* Toggle Switch (iOS-style) */
.indicator-toggle {
    position: relative;
    display: inline-block;
    width: 38px;
    height: 22px;
    cursor: pointer;
    flex-shrink: 0;
}

.indicator-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: 22px;
    transition: all 0.25s ease;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    left: 3px;
    bottom: 3px;
    background-color: #fff;
    border-radius: 50%;
    transition: all 0.25s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.indicator-toggle input:checked+.toggle-slider {
    background-color: var(--accent-color);
}

.indicator-toggle input:checked+.toggle-slider::before {
    transform: translateX(16px);
}

/* Expand button for EMA config */
.indicator-expand {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 0.25rem 0.4rem;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.indicator-expand:hover {
    color: var(--accent-color);
    background: rgba(0, 0, 0, 0.04);
}

.indicator-expand.expanded {
    transform: rotate(90deg);
}

/* EMA config (nested inside indicator row) */
.indicator-config {
    padding: 0.75rem 0 0.25rem 0;
}

/* Inline config (VWAP Gap %) */
.indicator-inline-config {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    margin-left: auto;
}

.inline-input {
    width: 50px;
    padding: 0.3rem 0.4rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 6px;
    font-size: 0.85rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-primary);
    font-family: inherit;
}

.inline-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.indicator-inline-config .percent-sign {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Settings actions */
.settings-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: var(--glass-border);
}

/* EMA Settings (reused inside settings modal) */
.ema-settings-list {
    max-height: 300px;
    overflow-y: auto;
}

.ema-setting-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.6rem;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 8px;
    margin-bottom: 0.4rem;
}

.ema-setting-row:hover {
    background: rgba(0, 0, 0, 0.04);
}

.ema-tf-label {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 40px;
    font-size: 0.85rem;
}

.ema-inputs {
    display: flex;
    gap: 0.75rem;
    flex: 1;
}

.ema-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    flex: 1;
}

.ema-input-group label {
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ema-input-group input {
    background: rgba(255, 255, 255, 0.8);
    border: var(--glass-border);
    border-radius: 6px;
    padding: 0.4rem 0.5rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    width: 100%;
    text-align: center;
}

.ema-input-group input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.ema-input-group.fast input {
    border-left: 3px solid #fcd535;
}

.ema-input-group.slow input {
    border-left: 3px solid #8750db;
}

/* Custom Lines Settings */
.custom-lines-list {
    max-height: 250px;
    overflow-y: auto;
}

.custom-line-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 8px;
    margin-bottom: 0.4rem;
    flex-wrap: wrap;
}

.custom-line-row:hover {
    background: rgba(0, 0, 0, 0.04);
}

.custom-line-row input[type="text"],
.custom-line-row input[type="number"] {
    background: rgba(255, 255, 255, 0.8);
    border: var(--glass-border);
    border-radius: 6px;
    padding: 0.35rem 0.5rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.8rem;
}

.custom-line-row input[type="text"]:focus,
.custom-line-row input[type="number"]:focus {
    outline: none;
    border-color: var(--accent-color);
}

.custom-line-name-input {
    width: 80px;
    flex-shrink: 0;
}

.custom-line-value-input {
    width: 80px;
    text-align: center;
}

.custom-line-mode-select {
    appearance: none;
    background: rgba(255, 255, 255, 0.8);
    border: var(--glass-border);
    border-radius: 6px;
    padding: 0.35rem 0.5rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.8rem;
    cursor: pointer;
}

.custom-line-mode-select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.custom-line-color-input {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    padding: 0;
    background: none;
}

.custom-line-remove {
    background: none;
    border: none;
    color: var(--down-color);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0.2rem 0.4rem;
    opacity: 0.6;
    transition: opacity 0.2s;
    flex-shrink: 0;
}

.custom-line-remove:hover {
    opacity: 1;
}

.btn-add-line {
    width: 100%;
    background: rgba(0, 0, 0, 0.03);
    border: 1px dashed rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 0.4rem;
}

.btn-add-line:hover {
    background: rgba(0, 0, 0, 0.06);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* Custom Line Legend Items */
.legend-item.custom-line {
    display: inline-flex;
}

#custom-lines-legends {
    display: contents;
}

/* Buttons */
.btn-primary {
    background: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.btn-secondary {
    background: rgba(0, 0, 0, 0.04);
    color: var(--text-primary);
    border: var(--glass-border);
    border-radius: 8px;
    padding: 0.6rem 1.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background: rgba(0, 0, 0, 0.08);
}

/* ==================== Mobile Responsive Styles ==================== */

@media screen and (max-width: 768px) {

    /* Header: 2-row layout */
    header {
        flex-wrap: wrap;
        gap: 0.5rem;
        padding: 0.6rem 0.75rem;
    }

    .logo {
        font-size: 1.1rem;
        margin-right: auto;
    }

    /* Controls wraps into rows alongside logo */
    .controls {
        display: contents;
    }

    /* Row 1: pair controls sit next to logo */
    .pair-controls {
        display: flex;
        align-items: center;
        gap: 0.4rem;
    }

    .select-wrapper {
        flex: none;
    }

    select {
        padding: 0.45rem 2rem 0.45rem 0.75rem;
        font-size: 0.85rem;
    }

    .edit-btn {
        padding: 0.45rem 0.55rem;
        font-size: 0.85rem;
    }

    /* Row 2: timeframes + settings take full width */
    .timeframes {
        flex: 1;
        justify-content: center;
        gap: 0.15rem;
        order: 10;
    }

    .tf-btn {
        flex: 1;
        min-width: 0;
        padding: 0.45rem 0.3rem;
        font-size: 0.8rem;
        text-align: center;
    }

    .settings-btn {
        order: 11;
        padding: 0.45rem 0.55rem;
    }

    /* Main content adjustments */
    main {
        padding: 0.5rem;
        gap: 0.5rem;
        flex: 1;
        min-height: 0;
        overflow: hidden;
    }

    .chart-container {
        border-radius: 8px;
        flex: 1;
        min-height: 0;
        display: flex;
        flex-direction: column;
    }

    #tv-chart {
        flex: 3;
        min-height: 0;
    }

    /* Chart legend adjustments for mobile */
    .chart-legend {
        gap: 8px;
        font-size: 10px;
        flex-wrap: wrap;
    }

    .legend-item {
        padding: 3px 6px;
        gap: 4px;
    }

    .legend-item::before {
        width: 10px;
        height: 2px;
    }

    /* Modal adjustments for mobile */
    .modal {
        width: 95vw;
        max-height: 90vh;
    }

    .modal-header {
        padding: 0.75rem 1rem;
    }

    .modal-body {
        padding: 1rem;
    }

    .add-token-form {
        flex-direction: column;
    }

    .add-token-form input {
        padding: 0.7rem 1rem;
        font-size: 1rem;
    }

    .add-token-form button {
        padding: 0.7rem 1.2rem;
        font-size: 1rem;
    }

    .token-item {
        padding: 0.7rem 0.8rem;
    }

    .token-name {
        font-size: 0.95rem;
    }

    /* Settings modal mobile */
    .settings-modal {
        width: 95vw;
    }

    .ema-setting-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .ema-tf-label {
        font-size: 1rem;
    }

    .ema-inputs {
        width: 100%;
    }

    .settings-actions {
        flex-direction: column;
    }

    .settings-actions button {
        width: 100%;
    }
}

/* Extra small screens (phones in portrait) */
@media screen and (max-width: 480px) {
    header {
        padding: 0.5rem 0.75rem;
    }

    .logo {
        font-size: 1rem;
    }

    .tf-btn {
        font-size: 0.75rem;
        padding: 0.45rem 0.3rem;
    }

    .chart-legend {
        font-size: 9px;
        gap: 6px;
        top: 4px;
        left: 8px;
    }

    .legend-item {
        padding: 2px 5px;
    }

    .legend-item::before {
        width: 8px;
    }
}