/* ==========================================================================
   QuantumVSA Style Design System - Premium Dark Glassmorphism Theme
   ========================================================================== */

:root {
    /* Theme Palettes */
    --bg-app: #070b13;
    --bg-card: rgba(18, 26, 47, 0.65);
    --bg-card-hover: rgba(26, 37, 65, 0.8);
    --border-color: rgba(255, 255, 255, 0.07);
    --border-color-hover: rgba(255, 255, 255, 0.15);
    
    /* Typography Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Action & Brand Colors */
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-primary-glow: rgba(99, 102, 241, 0.25);
    
    /* VSA Categorized Status Colors */
    --color-bull-strong: #00f2fe;    /* Stopping Volume (Teal) */
    --color-bull-success: #10b981;   /* Selling Climax (Vibrant Green) */
    --color-bull-weak: #a7f3d0;      /* No Supply (Light Mint) */
    --color-bear-danger: #ef4444;    /* Upthrust (Vibrant Red) */
    --color-bear-warning: #f59e0b;   /* Buying Climax (Orange) */
    --color-bear-weak: #fbcfe8;      /* No Demand (Light Pink) */
    --color-neutral: #cbd5e1;        /* Normal (Slate) */
}

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

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    overflow-x: hidden;
    padding-bottom: 2rem;
}

h1, h2, h3, h4, .kpi-value, .brand-text h1 {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(7, 11, 19, 0.5);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* App Container Wrapper */
.app-container {
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    min-height: 100vh;
}

/* Header & Controls styling */
.app-header {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary), #3b82f6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

.glow-icon {
    color: #fff;
    filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.5));
}

.brand-text h1 {
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 2px;
}

.brand-text h1 span {
    background: linear-gradient(120deg, #818cf8, #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text p {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: -2px;
}

/* Control Panel */
.control-panel {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.input-group label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.input-group label i {
    width: 14px;
    height: 14px;
}

.input-group input[type="text"] {
    background: rgba(7, 11, 19, 0.7);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.85rem;
    border-radius: 8px;
    outline: none;
    font-size: 0.87rem;
    width: 180px;
    transition: all 0.25s ease;
}

.input-group input[type="text"]:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.2);
}

.input-group input[type="number"] {
    background: rgba(7, 11, 19, 0.7);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    outline: none;
    font-size: 0.87rem;
    width: 75px;
    text-align: center;
    transition: all 0.25s ease;
}

.input-group input[type="number"]:focus {
    border-color: var(--color-primary);
}

/* Range input styled */
.range-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 120px;
    background: rgba(255, 255, 255, 0.1);
    height: 6px;
    border-radius: 3px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.6);
    transition: transform 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

#weeks-display {
    font-size: 0.8rem;
    color: var(--text-primary);
    min-width: 70px;
    font-weight: 500;
}

/* Presets Tickers styling */
.presets-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    padding: 0 0.5rem;
}

.presets-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.preset-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.preset-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.preset-btn.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(59, 130, 246, 0.2));
    border-color: var(--color-primary);
    color: var(--text-primary);
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.15);
}

/* Grid & Layout System */
.dashboard-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    min-height: 400px;
}

/* KPI Cards Layout */
.kpi-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.kpi-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.kpi-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.kpi-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.kpi-title {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-icon {
    width: 28px;
    height: 28px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.kpi-icon i {
    width: 15px;
    height: 15px;
}

.kpi-value-wrapper {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.kpi-value {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.kpi-badge {
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.2px;
}

.kpi-badge.up {
    background-color: rgba(16, 185, 129, 0.12);
    color: var(--color-bull-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.kpi-badge.down {
    background-color: rgba(239, 68, 68, 0.12);
    color: var(--color-bear-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.kpi-badge.neutral {
    background-color: rgba(148, 163, 184, 0.12);
    color: var(--text-secondary);
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.kpi-footer {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Volume Progress bar in KPI */
.progress-bar-container {
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 4px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), #38bdf8);
    border-radius: 3px;
    width: 0%;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Close position track in KPI */
.slider-track-kpi {
    position: relative;
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.07);
    border-radius: 3px;
    margin: 8px 0 4px 0;
}

.slider-node {
    position: absolute;
    top: 50%;
    width: 10px;
    height: 10px;
    background: var(--text-primary);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 8px var(--color-primary);
    transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.track-label {
    position: absolute;
    top: 10px;
    font-size: 0.65rem;
    color: var(--text-muted);
    font-weight: 600;
}

.track-label.left { left: 0; }
.track-label.right { right: 0; }

/* Highlight KPI Card */
.highlight-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(18, 26, 47, 0.7) 60%);
    border: 1px solid rgba(99, 102, 241, 0.25);
}

.highlight-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.kpi-description {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Mid section grid: Chart + Sidebar */
.mid-section {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 1.5rem;
}

@media (max-width: 1100px) {
    .mid-section {
        grid-template-columns: 1fr;
    }
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 0.75rem;
}

.card-header-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-header h2 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-header-left i {
    width: 18px;
    height: 18px;
}

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

.card-header-left h2 span {
    font-weight: 400;
    color: var(--text-secondary);
}

/* Chart legends */
.chart-legend {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

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

.bull-dot { background-color: var(--color-bull-success); }
.bear-dot { background-color: var(--color-bear-danger); }
.normal-dot { background-color: var(--text-muted); }

/* Chart Container Wrapper */
.chart-container-wrapper {
    width: 100%;
    height: 480px;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background: rgba(4, 7, 13, 0.4);
}

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

/* Sidebar styling */
.sidebar-section {
    max-height: 550px;
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    overflow-y: auto;
    padding-right: 2px;
}

.section-subtitle {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.active-bar-details {
    background: rgba(7, 11, 19, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.details-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.4rem;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.detail-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.detail-label {
    color: var(--text-secondary);
}

.detail-value {
    color: var(--text-primary);
    font-weight: 500;
}

/* Detail Box Signal Styles */
.signal-alert-box {
    background: rgba(255, 255, 255, 0.03);
    border-left: 3px solid var(--text-muted);
    border-radius: 4px;
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-top: 0.25rem;
    transition: all 0.3s ease;
}

.signal-badge {
    align-self: flex-start;
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #000;
    background-color: var(--text-secondary);
}

.signal-explanation {
    font-size: 0.76rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* VSA Colors Class System for widgets */
.signal-alert-box.bearish-danger {
    background: rgba(239, 68, 68, 0.08);
    border-left-color: var(--color-bear-danger);
}
.signal-alert-box.bearish-danger .signal-badge {
    background-color: var(--color-bear-danger);
    color: #fff;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.3);
}

.signal-alert-box.bearish-warning {
    background: rgba(245, 158, 11, 0.08);
    border-left-color: var(--color-bear-warning);
}
.signal-alert-box.bearish-warning .signal-badge {
    background-color: var(--color-bear-warning);
    color: #000;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.3);
}

.signal-alert-box.bearish-weak {
    background: rgba(251, 207, 232, 0.06);
    border-left-color: var(--color-bear-weak);
}
.signal-alert-box.bearish-weak .signal-badge {
    background-color: var(--color-bear-weak);
    color: #1e1b4b;
}

.signal-alert-box.bullish-success {
    background: rgba(16, 185, 129, 0.08);
    border-left-color: var(--color-bull-success);
}
.signal-alert-box.bullish-success .signal-badge {
    background-color: var(--color-bull-success);
    color: #fff;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

.signal-alert-box.bullish-strong {
    background: rgba(0, 242, 254, 0.08);
    border-left-color: var(--color-bull-strong);
}
.signal-alert-box.bullish-strong .signal-badge {
    background-color: var(--color-bull-strong);
    color: #090d16;
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.3);
}

.signal-alert-box.bullish-weak {
    background: rgba(167, 243, 208, 0.06);
    border-left-color: var(--color-bull-weak);
}
.signal-alert-box.bullish-weak .signal-badge {
    background-color: var(--color-bull-weak);
    color: #064e3b;
}

/* Accordion (Educational guide) */
.vsa-guide-panel {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.accordion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.accordion-item {
    border: 1px solid rgba(255, 255, 255, 0.03);
    background: rgba(255, 255, 255, 0.01);
    border-radius: 8px;
    overflow: hidden;
}

.accordion-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.65rem 0.85rem;
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 550;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.accordion-title:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}

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

.accordion-item.open .accordion-chevron {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    padding: 0 0.85rem;
    font-size: 0.72rem;
    color: var(--text-muted);
    line-height: 1.4;
    transition: all 0.25s cubic-bezier(0, 1, 0, 1);
}

.accordion-item.open .accordion-content {
    max-height: 120px;
    padding: 0 0.85rem 0.75rem 0.85rem;
}

/* Data Table section */
.table-section {
    width: 100%;
}

.flex-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-responsive {
    overflow-x: auto;
    width: 100%;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.03);
    background: rgba(4, 7, 13, 0.3);
}

.vsa-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.8rem;
}

.vsa-table th {
    background: rgba(7, 11, 19, 0.8);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.5px;
}

.vsa-table td {
    padding: 0.65rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.vsa-table tbody tr {
    transition: all 0.15s ease;
}

.vsa-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

/* Colors and Tags inside Table Cells */
.table-badge {
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    display: inline-block;
}

.table-badge.up-dir {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-bull-success);
}

.table-badge.down-dir {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-bear-danger);
}

/* Progress bar inside Table Cells */
.bar-track {
    width: 80px;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    display: inline-block;
    vertical-align: middle;
    margin-right: 6px;
    overflow: hidden;
    position: relative;
}

.bar-fill {
    height: 100%;
    background-color: var(--color-primary);
    border-radius: 3px;
}

/* Row-highlighting matching VSA signals in table */
.vsa-tag {
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    display: inline-block;
}

.vsa-tag.bearish-danger {
    background-color: rgba(239, 68, 68, 0.12);
    color: var(--color-bear-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.vsa-tag.bearish-warning {
    background-color: rgba(245, 158, 11, 0.12);
    color: var(--color-bear-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.vsa-tag.bearish-weak {
    background-color: rgba(251, 207, 232, 0.08);
    color: var(--color-bear-weak);
    border: 1px solid rgba(251, 207, 232, 0.15);
}

.vsa-tag.bullish-success {
    background-color: rgba(16, 185, 129, 0.12);
    color: var(--color-bull-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.vsa-tag.bullish-strong {
    background-color: rgba(0, 242, 254, 0.12);
    color: var(--color-bull-strong);
    border: 1px solid rgba(0, 242, 254, 0.25);
}

.vsa-tag.bullish-weak {
    background-color: rgba(167, 243, 208, 0.08);
    color: var(--color-bull-weak);
    border: 1px solid rgba(167, 243, 208, 0.15);
}

.vsa-tag.neutral {
    background-color: rgba(148, 163, 184, 0.1);
    color: var(--text-secondary);
    border: 1px solid rgba(148, 163, 184, 0.15);
}

/* Button UI Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    outline: none;
    transition: all 0.25s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, #4f46e5 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-sm {
    padding: 0.35rem 0.85rem;
    font-size: 0.75rem;
    border-radius: 6px;
}

.btn-sm i {
    width: 13px;
    height: 13px;
}

/* Overlay layouts (Loading & Error spinners) */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(7, 11, 19, 0.85);
    z-index: 100;
    border-radius: 16px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.overlay.hidden {
    opacity: 0;
    pointer-events: none;
    display: none;
}

.overlay p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.2px;
}

/* Double Bounce Spinner Animation */
.spinner-wrapper {
    width: 50px;
    height: 50px;
    position: relative;
}

.double-bounce1, .double-bounce2 {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--color-primary);
    opacity: 0.6;
    position: absolute;
    top: 0;
    left: 0;
    animation: sk-bounce 2.0s infinite ease-in-out;
}

.double-bounce2 {
    animation-delay: -1.0s;
    background-color: #38bdf8;
}

@keyframes sk-bounce {
    0%, 100% { 
        transform: scale(0.0);
    } 50% { 
        transform: scale(1.0);
    }
}

/* Error icon and overlay details */
.error-icon {
    width: 52px;
    height: 52px;
    color: var(--color-bear-danger);
    filter: drop-shadow(0 0 10px rgba(239, 68, 68, 0.4));
}

#error-overlay h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

#error-overlay p {
    font-size: 0.85rem;
    color: var(--text-muted);
    max-width: 320px;
    text-align: center;
}

/* Footer layout */
.app-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.72rem;
}

/* Responsive details for smaller heights/widths */
@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        align-items: stretch;
        padding: 1.25rem;
    }
    
    .control-panel {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .input-group input[type="text"], 
    .input-group input[type="number"], 
    input[type="range"] {
        width: 100%;
    }
}

/* Active Stock Title Display Component */
.active-stock-header {
    margin: 0.25rem 0 0.5rem 0.25rem;
}

#active-stock-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.5px;
}

#active-stock-title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 24px;
    background: linear-gradient(to bottom, var(--color-primary), #3b82f6);
    border-radius: 2px;
}