/* ==========================================================================
   SPATIAL AUDIO ACOUSTIC SIMULATOR - DESIGN SYSTEM & STYLESHEET
   Matching A-Lab Cyberpunk Studio Aesthetics
   ========================================================================== */

:root {
    --color-primario: #00FFFF;
    --color-primario-glow: rgba(0, 255, 255, 0.4);
    --color-magenta: #F000FF;
    --color-magenta-glow: rgba(240, 0, 255, 0.4);
    --color-lab-accent: #A855F7;
    --color-fondo: #08080c;
    --color-superficie: rgba(16, 16, 22, 0.82);
    --color-superficie-hover: rgba(24, 24, 34, 0.9);
    --color-borde: rgba(255, 255, 255, 0.08);
    --color-borde-activo: rgba(0, 255, 255, 0.35);
    --color-texto: #f2f2ee;
    --color-texto-secundario: #9a9aa5;
    --color-warning: #ff0055;
    --color-success: #00ff88;

    --font-display: 'Space Grotesk', 'Poppins', sans-serif;
    --font-body: 'Poppins', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --navbar-height: 60px;
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--color-fondo);
    color: var(--color-texto);
    font-family: var(--font-body);
}

/* === NAVBAR === */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    height: var(--navbar-height);
    background-color: rgba(10, 10, 12, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--color-borde);
}
.nav-brand a {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-texto);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.nav-brand span { color: var(--color-primario); }

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 1.5rem;
}
.nav-links a {
    color: var(--color-texto-secundario);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.25s ease;
}
.nav-links a:hover, .nav-links a.active {
    color: var(--color-primario);
}

/* === MAIN LAYOUT CONTAINER === */
.simulator-layout {
    width: 100vw;
    height: calc(100vh - var(--navbar-height));
    margin-top: var(--navbar-height);
    position: relative;
    display: flex;
}

/* === 3D VIEWPORT CANVAS === */
#viewport-container {
    flex: 1;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

/* === FLOATING HUD OVERLAY === */
.hud-overlay {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    right: 1.5rem;
    bottom: 1.5rem;
    z-index: 10;
    pointer-events: none;
    display: grid;
    grid-template-columns: 360px 1fr 380px;
    gap: 1.5rem;
}

.hud-panel {
    pointer-events: auto;
    background: var(--color-superficie);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--color-borde);
    border-radius: 14px;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow-y: auto;
    max-height: 100%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);

    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.hud-panel-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primario);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-borde);
}

.hud-panel-title .badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-texto-secundario);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
}

/* === PRESETS GRID === */
.preset-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}
.preset-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-borde);
    color: var(--color-texto-secundario);
    padding: 0.6rem;
    border-radius: 8px;
    font-family: var(--font-display);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.25s ease;
    text-align: center;
}
.preset-btn:hover {
    border-color: var(--color-primario);
    color: var(--color-texto);
    background: rgba(0, 255, 255, 0.05);
}
.preset-btn.active {
    border-color: var(--color-primario);
    color: var(--color-primario);
    background: rgba(0, 255, 255, 0.12);
    box-shadow: 0 0 12px var(--color-primario-glow);
}

/* === CONTROL GROUPS & SLIDERS === */
.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.control-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--color-texto-secundario);
}
.control-label span.val {
    font-family: var(--font-mono);
    color: var(--color-primario);
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--color-primario);
    cursor: pointer;
    box-shadow: 0 0 10px var(--color-primario-glow);
    transition: transform 0.2s ease;
}
input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

select {
    width: 100%;
    background: rgba(10, 10, 15, 0.9);
    border: 1px solid var(--color-borde);
    color: var(--color-texto);
    padding: 0.5rem;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    outline: none;
    cursor: pointer;
}
select:focus {
    border-color: var(--color-primario);
}

/* === MIDDLE FLOATING INSTRUCTION CARD & ALTITUDE BADGE === */
.instruction-card {
    pointer-events: auto;
    background: rgba(16, 16, 22, 0.75);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-borde);
    border-radius: 30px;
    padding: 0.6rem 1.4rem;
    font-size: 0.85rem;
    color: var(--color-texto-secundario);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    animation: fadeInDown 0.6s ease;
}
.instruction-card span.highlight {
    color: var(--color-magenta);
    font-weight: 600;
}

.altitude-badge {
    pointer-events: auto;
    background: rgba(0, 255, 255, 0.15);
    border: 1px solid var(--color-primario);
    box-shadow: 0 0 15px var(--color-primario-glow);
    border-radius: 20px;
    padding: 0.4rem 1.2rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-texto);
    letter-spacing: 0.05em;
    animation: fadeInDown 0.3s ease;
}
.altitude-badge span {
    color: var(--color-primario);
    font-weight: 600;
}

/* === AUDIO CONTROL BAR === */
.audio-bar {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.audio-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-borde);
    color: var(--color-texto);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.25s ease;
}
.audio-btn:hover {
    border-color: var(--color-primario);
    color: var(--color-primario);
}
.audio-btn.playing {
    background: var(--color-primario);
    color: #000;
    box-shadow: 0 0 15px var(--color-primario-glow);
}

/* === DROP ZONE === */
.file-drop-zone {
    border: 1px dashed var(--color-borde);
    border-radius: 8px;
    padding: 0.75rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-texto-secundario);
    cursor: pointer;
    transition: all 0.25s ease;
}
.file-drop-zone:hover, .file-drop-zone.dragover {
    border-color: var(--color-magenta);
    background: rgba(240, 0, 255, 0.08);
    color: var(--color-texto);
}

/* === METRICS DISPLAY GRID === */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}
.metric-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-borde);
    border-radius: 8px;
    padding: 0.6rem;
    display: flex;
    flex-direction: column;
}
.metric-label {
    font-size: 0.75rem;
    color: var(--color-texto-secundario);
}
.metric-val {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primario);
}
.metric-val.clear { color: var(--color-success); }
.metric-val.warning { color: var(--color-warning); }

/* === CANVAS GRAPH CONTAINERS === */
.canvas-card {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--color-borde);
    border-radius: 8px;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.canvas-card-title {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-texto-secundario);
}
canvas.dashboard-canvas {
    width: 100%;
    height: 90px;
    border-radius: 4px;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1024px) {
    .hud-overlay {
        grid-template-columns: 1fr;
        overflow-y: auto;
        pointer-events: auto;
    }
    .hud-panel { max-height: none; }
    .instruction-card { display: none; }
}