/* ============================================
   NAT GAS ETF VOLUME MONITOR
   Core Styles
   ============================================ */

:root {
    /* Core palette */
    --bg-primary: #0a0a10;
    --bg-secondary: #11111a;
    --bg-card: #16161f;
    --bg-panel: #1a1a25;
    --bg-hover: #1e1e2a;

    /* Borders */
    --border-primary: #252535;
    --border-accent: #353548;

    /* Text */
    --text-primary: #e0ddd8;
    --text-secondary: #888898;
    --text-muted: #555565;
    --text-bright: #f5f0eb;

    /* Status colors — warm amber spectrum */
    --green: #3db87a;
    --green-dim: #2d9060;
    --yellow: #d4a830;
    --orange: #c07828;
    --red: #c04040;
    --red-glow: rgba(192, 64, 64, 0.3);
    --purple: #8855bb;
    --purple-glow: rgba(136, 85, 187, 0.35);
    --blue: #4a80b8;
    --blue-dim: #385e88;
    --cyan: #5090a0;

    /* Section colors */
    --long-accent: #3db87a;
    --long-bg: rgba(61, 184, 122, 0.04);
    --short-accent: #c04040;
    --short-bg: rgba(192, 64, 64, 0.04);
    --signal-accent: #d4a830;
    --signal-bg: rgba(212, 168, 48, 0.04);

    /* Layout */
    --header-height: 56px;
    --card-radius: 8px;
    --panel-radius: 6px;
}

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

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', 'Consolas', monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ---- TOP BAR ---- */
#top-bar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
    backdrop-filter: blur(12px);
}

.top-bar-left h1 {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-bright);
}

.top-bar-left .subtitle {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.market-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px;
    border-radius: 4px;
    background: var(--bg-panel);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.market-status.open .status-dot {
    background: var(--green);
    box-shadow: 0 0 8px var(--green);
}

.market-status.closed .status-dot {
    background: var(--red);
}

.market-status.pre .status-dot {
    background: var(--yellow);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

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

.last-updated.stale {
    color: #f59e0b;
    font-weight: 600;
}

.refresh-btn {
    background: none;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    font-size: 1.2rem;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.refresh-btn:hover {
    border-color: var(--blue);
    color: var(--blue);
}

.refresh-btn.spinning {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* ---- HYPOTHESIS BANNER ---- */
.hypothesis-banner {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.hypothesis-banner.collapsed .banner-content {
    display: none;
}

.hypothesis-banner.collapsed .banner-arrow {
    transform: rotate(-90deg);
}

.banner-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 24px;
    cursor: pointer;
    user-select: none;
}

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

.banner-title {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--signal-accent);
}

.banner-arrow {
    color: var(--text-muted);
    transition: transform 0.3s;
}

.banner-content {
    padding: 12px 24px 16px;
}

.validation-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
}

.validation-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--panel-radius);
    padding: 10px;
    text-align: center;
}

.validation-card .ticker {
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.validation-card .corr-value {
    font-size: 1.2rem;
    font-weight: 700;
    width: auto;
    text-align: center;
}

.validation-card .corr-label {
    font-size: 0.6rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.validation-card .pvalue {
    font-size: 0.6rem;
    color: var(--text-secondary);
}
.validation-card .pv-confirmed { color: var(--green); font-weight: 700; }
.validation-card .pv-weak      { color: var(--text-secondary); }
.validation-card .pv-none      { color: var(--text-muted); }

/* ---- MAIN DASHBOARD LAYOUT ---- */
#dashboard {
    display: grid;
    grid-template-columns: 1fr 1.4fr 1fr;
    gap: 0;
    min-height: calc(100vh - var(--header-height) - 40px);
}

.dashboard-section {
    padding: 16px;
    border-right: 1px solid var(--border-primary);
    overflow-y: auto;
    max-height: calc(100vh - var(--header-height) - 40px);
}

.dashboard-section:last-child {
    border-right: none;
}

.section-long {
    background: var(--long-bg);
}

.section-short {
    background: var(--short-bg);
}

.section-signals {
    background: var(--signal-bg);
}

.section-header {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-primary);
}

.section-header h2 {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.section-long .section-header h2 {
    color: var(--long-accent);
}

.section-short .section-header h2 {
    color: var(--short-accent);
}

.section-signals .section-header h2 {
    color: var(--signal-accent);
}

.section-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}


/* ---- ETF CARDS CONTAINER ---- */
.etf-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ---- SIGNAL PANELS ---- */
.signal-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--panel-radius);
    padding: 14px;
    margin-bottom: 14px;
}

.signal-panel h3 {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

/* ---- FOOTER ---- */
footer {
    border-top: 1px solid var(--border-primary);
    padding: 10px 24px;
    background: var(--bg-secondary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    font-size: 0.65rem;
    color: var(--text-muted);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1200px) {
    #dashboard {
        grid-template-columns: 1fr;
        max-height: none;
    }

    .dashboard-section {
        max-height: none;
        border-right: none;
        border-bottom: 1px solid var(--border-primary);
    }

    .validation-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .top-bar-left .subtitle {
        display: none;
    }

    .top-bar-left h1 {
        font-size: 0.75rem;
        white-space: nowrap;
    }

    .validation-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    #top-bar {
        padding: 0 12px;
    }

    .dashboard-section {
        padding: 12px;
    }

    .footer-content {
        flex-direction: column;
        gap: 4px;
    }
}

/* ---- UTILITY CLASSES ---- */
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-yellow { color: var(--yellow); }
.text-orange { color: var(--orange); }
.text-purple { color: var(--purple); }
.text-blue { color: var(--blue); }
.text-cyan { color: var(--cyan); }
.text-muted { color: var(--text-muted); }

.bg-green { background: var(--green); }
.bg-red { background: var(--red); }
.bg-yellow { background: var(--yellow); }
.bg-orange { background: var(--orange); }
.bg-purple { background: var(--purple); }

/* ---- PAGE NAV ---- */
.page-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-link {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--text-muted);
    text-decoration: none;
    padding: 4px 10px;
    border-radius: 4px;
    border: 1px solid transparent;
    transition: color 0.15s, border-color 0.15s;
    text-transform: uppercase;
}
.nav-link:hover { color: var(--text-primary); border-color: var(--border-accent); }
.nav-link.active { color: var(--text-bright); border-color: var(--border-accent); background: var(--bg-panel); }

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-accent);
    border-radius: 3px;
}

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

/* Pulsing alert animation */
@keyframes alert-pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 var(--red-glow);
    }
    50% {
        box-shadow: 0 0 20px 4px var(--red-glow);
    }
}

@keyframes extreme-pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 var(--purple-glow);
        border-color: var(--purple);
    }
    50% {
        box-shadow: 0 0 30px 8px var(--purple-glow);
        border-color: var(--text-bright);
    }
}

.alert-active {
    animation: alert-pulse 2s infinite;
}

.extreme-active {
    animation: extreme-pulse 1.5s infinite;
}

/* ============================================
   Universal Tooltip System — JS-driven singleton
   Usage: add data-tooltip="text" to any element
   Tooltip div #tt is appended to <body> by app.js
   ============================================ */

[data-tooltip] { cursor: help; }

#tt {
    display: none;
    position: fixed;
    z-index: 99999;
    background: #181820;
    border: 1px solid #303040;
    color: #e8e8f0;
    font-size: 0.65rem;
    line-height: 1.45;
    font-weight: 400;
    padding: 6px 10px;
    border-radius: 5px;
    white-space: normal;
    max-width: 220px;
    text-align: left;
    box-shadow: 0 4px 16px rgba(0,0,0,0.6);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s ease;
    word-break: break-word;
}

/* ---- MOBILE 480px ---- */
@media (max-width: 480px) {
    #top-bar { padding: 0 10px; }
    .top-bar-right { gap: 8px; }
    .nav-link { padding: 3px 6px; font-size: 0.6rem; letter-spacing: 0; }
    /* Shrink "Updated: ..." text */
    #last-updated { font-size: 0.55rem; letter-spacing: 0; }
    /* Tooltip narrower so it never clips on small screens */
    #tt { max-width: calc(100vw - 20px); font-size: 0.62rem; }
    /* Validation grid: 2 cols max */
    .validation-grid { grid-template-columns: repeat(2, 1fr) !important; }
}

/* ---- MOBILE 375px ---- */
@media (max-width: 375px) {
    .top-bar-left h1 { font-size: 0.65rem; }
    /* Hide trough-to-peak nav link on tiny screens to prevent overflow */
    .page-nav .nav-link:nth-child(2) { display: none; }
    .nav-link { padding: 3px 5px; font-size: 0.58rem; }
}