/*
 * KARTIKAY A MATHUR — PROCEDURAL AUDIO RESONANCE HUD
 * Edolus Brutalist Cybernetic Visualizer & Acoustic Spectrum Analyzer
 * Vocal / Formant Resonance Band: 2.8k–3.2k Hz
 * Strict Zero-Emoji Policy Enforced
 */

:root {
    --hud-emerald: #11845c;
    --hud-emerald-glow: rgba(17, 132, 92, 0.55);
    --hud-emerald-subtle: rgba(17, 132, 92, 0.16);
    --hud-mint: #e9fae6;
    --hud-mint-dim: rgba(233, 250, 230, 0.72);
    --hud-mint-faint: rgba(233, 250, 230, 0.08);
    --hud-gray-light: #e8e8e8;
    --hud-gray-mid: #8f8f8f;
    --hud-gray-dark: #3a423d;
    --hud-black-void: #070908;
    --hud-black-surface: #0c100e;
    --hud-black-card: #121815;
    --hud-border-hairline: rgba(233, 250, 230, 0.14);
    --hud-border-accent: rgba(17, 132, 92, 0.5);
    --hud-font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
    --hud-font-display: 'Anton', 'Impact', 'Archivo Black', sans-serif;
    --hud-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Master HUD Floating / Embedded Container */
.audio-resonance-hud {
    position: fixed;
    bottom: 1.5rem;
    left: 1.5rem;
    right: auto;
    width: 480px;
    max-width: calc(100vw - 3rem);
    background-color: rgba(12, 16, 14, 0.94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--hud-border-hairline);
    border-radius: 0px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.85), 0 0 24px rgba(17, 132, 92, 0.12);
    z-index: 9995;
    color: var(--hud-mint);
    font-family: var(--hud-font-mono);
    font-size: 11px;
    line-height: 1.35;
    overflow: hidden;
    transition: transform 300ms var(--hud-ease-out), opacity 300ms var(--hud-ease-out);
    user-select: none;
}

/* When embedded directly into a page element instead of fixed overlay */
.audio-resonance-hud.hud-embedded {
    position: relative;
    bottom: auto;
    right: auto;
    width: 100%;
    max-width: 100%;
    margin: 1.5rem 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

/* Minimized Floating Dock State */
.audio-resonance-hud.hud-is-minimized {
    width: auto;
    max-width: calc(100vw - 2rem);
    background-color: rgba(12, 16, 14, 0.96);
    border-color: var(--hud-border-accent);
}

.audio-resonance-hud.hud-is-minimized .hud-body,
.audio-resonance-hud.hud-is-minimized .hud-footer {
    display: none !important;
}

/* HUD Header Bar */
.hud-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.85rem;
    background-color: rgba(7, 9, 8, 0.85);
    border-bottom: 1px solid var(--hud-border-hairline);
    gap: 0.75rem;
}

.hud-title-cluster {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    overflow: hidden;
}

.hud-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--hud-emerald);
    box-shadow: 0 0 8px var(--hud-emerald-glow);
    flex-shrink: 0;
    animation: hud-dot-pulse 2s infinite ease-in-out;
}

.hud-status-dot.status-inactive {
    background-color: var(--hud-gray-dark);
    box-shadow: none;
    animation: none;
}

.hud-status-dot.status-sim {
    background-color: #3b82f6;
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.6);
}

@keyframes hud-dot-pulse {
    0%, 100% {
        opacity: 0.45;
        transform: scale(0.92);
    }
    50% {
        opacity: 1;
        transform: scale(1.15);
    }
}

.hud-title-text {
    font-family: var(--hud-font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: #ffffff;
    text-transform: uppercase;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hud-formant-tag {
    background: rgba(17, 132, 92, 0.22);
    border: 1px solid var(--hud-emerald);
    color: var(--hud-mint);
    padding: 0.12rem 0.4rem;
    font-size: 0.58rem;
    letter-spacing: 0.08em;
    font-weight: 600;
    text-transform: uppercase;
    flex-shrink: 0;
}

.hud-header-actions {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.hud-action-btn {
    background: transparent;
    border: 1px solid var(--hud-border-hairline);
    color: var(--hud-gray-light);
    font-family: var(--hud-font-mono);
    font-size: 0.64rem;
    padding: 0.2rem 0.5rem;
    cursor: pointer;
    transition: background 150ms ease, border-color 150ms ease, color 150ms ease;
    line-height: 1;
}

.hud-action-btn:hover {
    background: var(--hud-mint-faint);
    border-color: var(--hud-mint);
    color: #ffffff;
}

.hud-action-btn:focus-visible {
    outline: 1px solid var(--hud-mint);
}

/* HUD Body & Canvas Presentation Stage */
.hud-body {
    padding: 0.75rem 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.hud-canvas-container {
    position: relative;
    width: 100%;
    height: 140px;
    background-color: var(--hud-black-void);
    border: 1px solid var(--hud-border-hairline);
    overflow: hidden;
}

.hud-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* Formant Resonance Highlight Badge Overlay */
.hud-resonance-badge {
    position: absolute;
    top: 6px;
    right: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(7, 9, 8, 0.88);
    border: 1px solid var(--hud-border-accent);
    padding: 3px 7px;
    font-size: 0.58rem;
    letter-spacing: 0.08em;
    color: var(--hud-mint);
    pointer-events: none;
    transition: border-color 200ms ease, background 200ms ease;
}

.hud-resonance-badge.badge-active {
    border-color: var(--hud-mint);
    background: rgba(17, 132, 92, 0.35);
    box-shadow: 0 0 12px var(--hud-emerald-glow);
}

.badge-pulse-indicator {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: var(--hud-emerald);
    transition: background-color 200ms ease;
}

.hud-resonance-badge.badge-active .badge-pulse-indicator {
    background-color: var(--hud-mint);
}

/* Frequency Peak & Spectrum Telemetry Metrics */
.hud-metrics-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    padding: 0.5rem 0.6rem;
    background: rgba(18, 24, 21, 0.6);
    border: 1px solid var(--hud-border-hairline);
}

.hud-metric-cell {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.metric-label {
    font-size: 0.54rem;
    color: var(--hud-gray-mid);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.metric-val {
    font-size: 0.74rem;
    color: var(--hud-mint);
    font-weight: 600;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.metric-val.val-highlight {
    color: #6ee7b7;
}

/* HUD Sound Mode & Display Switcher */
.hud-options-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.hud-segmented-group {
    display: flex;
    border: 1px solid var(--hud-border-hairline);
}

.hud-segment-btn {
    background: transparent;
    border: none;
    border-right: 1px solid var(--hud-border-hairline);
    color: var(--hud-gray-mid);
    font-family: var(--hud-font-mono);
    font-size: 0.58rem;
    padding: 0.25rem 0.55rem;
    cursor: pointer;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: background 150ms ease, color 150ms ease;
}

.hud-segment-btn:last-child {
    border-right: none;
}

.hud-segment-btn:hover {
    background: var(--hud-mint-faint);
    color: var(--hud-gray-light);
}

.hud-segment-btn.is-active {
    background: var(--hud-emerald-subtle);
    color: var(--hud-mint);
    font-weight: 600;
}

/* Gain Slider & Level Visualizer */
.hud-gain-module {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    min-width: 150px;
}

.hud-gain-label {
    font-size: 0.56rem;
    color: var(--hud-gray-mid);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
}

.hud-gain-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: rgba(233, 250, 230, 0.16);
    outline: none;
    border-radius: 0;
    cursor: pointer;
}

.hud-gain-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 10px;
    height: 12px;
    background: var(--hud-mint);
    border: 1px solid var(--hud-emerald);
    cursor: pointer;
    transition: transform 150ms ease, background 150ms ease;
}

.hud-gain-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    background: #ffffff;
}

.hud-gain-slider::-moz-range-thumb {
    width: 10px;
    height: 12px;
    background: var(--hud-mint);
    border: 1px solid var(--hud-emerald);
    cursor: pointer;
}

.hud-gain-readout {
    font-size: 0.62rem;
    font-weight: 600;
    color: var(--hud-mint);
    min-width: 2.4rem;
    text-align: right;
}

/* Master Control Footer */
.hud-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.85rem;
    background-color: rgba(7, 9, 8, 0.85);
    border-top: 1px solid var(--hud-border-hairline);
    gap: 0.75rem;
}

.hud-main-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--hud-emerald);
    border: 1px solid var(--hud-mint);
    color: #ffffff;
    font-family: var(--hud-font-mono);
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.45rem 1rem;
    cursor: pointer;
    transition: background 150ms ease, transform 150ms ease, box-shadow 150ms ease;
}

.hud-main-toggle-btn:hover {
    background: #179e6f;
    box-shadow: 0 0 16px var(--hud-emerald-glow);
}

.hud-main-toggle-btn.btn-muted {
    background: rgba(30, 36, 32, 0.85);
    border-color: var(--hud-border-hairline);
    color: var(--hud-gray-mid);
}

.hud-main-toggle-btn.btn-muted:hover {
    background: rgba(45, 54, 48, 0.95);
    color: var(--hud-mint);
    box-shadow: none;
}

.hud-footer-descriptor {
    font-size: 0.54rem;
    color: var(--hud-gray-mid);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-align: right;
    line-height: 1.3;
}

.hud-footer-descriptor strong {
    color: var(--hud-mint);
    font-weight: 600;
}

/* Minimized Dock Bar Component */
.hud-minimized-bar {
    display: none;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.8rem;
    cursor: pointer;
}

.audio-resonance-hud.hud-is-minimized .hud-minimized-bar {
    display: flex;
}

.hud-minimized-title {
    font-size: 0.64rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--hud-mint);
    text-transform: uppercase;
}

.hud-minimized-canvas-spark {
    width: 60px;
    height: 20px;
    background: var(--hud-black-void);
    border: 1px solid var(--hud-border-hairline);
}

/* Responsive Viewports */
@media (max-width: 768px) {
    .audio-resonance-hud {
        bottom: 0.75rem;
        right: 0.75rem;
        width: calc(100vw - 1.5rem);
    }

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

    .hud-canvas-container {
        height: 120px;
    }
}

@media (max-width: 480px) {
    .audio-resonance-hud {
        bottom: 0.5rem;
        right: 0.5rem;
        width: calc(100vw - 1rem);
    }

    .hud-options-row {
        flex-direction: column;
        align-items: stretch;
    }

    .hud-gain-module {
        width: 100%;
    }

    .hud-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .hud-main-toggle-btn {
        width: 100%;
        text-align: center;
    }

    .hud-footer-descriptor {
        text-align: center;
    }
}