:root {
    --bg-main: #fcfcfc;
    --bg-panel: #ffffff;
    --text-main: #1a1a1a;
    --text-muted: #595959;
    --border-color: #d9d9d9;
    
    --accent: #d97706; /* Warm amber/orange accent */
    --accent-hover: #b45309;
    
    --quiet: #16a34a; /* Green */
    --moderate: #eab308; /* Yellow */
    --loud: #dc2626; /* Red */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
}

.app-container {
    position: relative;
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}

/* Start Overlay */
.overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.95);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.overlay.active {
    opacity: 1;
    pointer-events: all;
}

.overlay-content {
    background: var(--bg-panel);
    padding: 2.5rem;
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    text-align: center;
    max-width: 500px;
    width: 90%;
}

.logo-container {
    margin-bottom: 1rem;
    color: var(--accent);
}

.overlay-content h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.overlay-content p {
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .overlay-content p {
        display: none;
    }
    .overlay-content h1 {
        font-size: 1.5rem;
    }
    .overlay-content {
        padding: 1.5rem;
    }
}

.primary-btn {
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.2s;
}

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

.permission-note {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Header */
.util-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
}

.brand h2 {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-main);
}

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

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-group label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* Custom Select */
.util-select {
    appearance: auto;
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.3rem 0.5rem;
    font-family: inherit;
    font-size: 0.9rem;
    cursor: pointer;
}

/* Custom Range Input */
.util-range {
    width: 120px;
    cursor: pointer;
}

/* Meter Panel */
.meter-container {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    padding: 1rem;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    width: 90%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.meter-info {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.meter-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
}

.meter-value {
    font-size: 1.2rem;
    font-weight: 700;
}

.meter-bar-wrapper {
    width: 100%;
    height: 12px;
    background: #e5e5e5;
    overflow: hidden;
}

.meter-fill {
    height: 100%;
    width: 0%;
    background: var(--quiet);
    transition: width 0.1s ease-out, background-color 0.2s ease;
}

/* Footer */
.util-footer {
    background: var(--bg-panel);
    border-top: 1px solid var(--border-color);
    padding: 60px 20px 30px;
    margin-top: auto;
}

.footer-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    font-size: 1.1rem;
    color: var(--text-main);
    margin-bottom: 20px;
    font-weight: 700;
}

.footer-col nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
    font-size: 0.95rem;
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-bottom {
    max-width: 1000px;
    margin: 0 auto;
    padding-top: 20px;
    border-top: 1px solid #eaeaea;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

.status-badge {
    position: absolute;
    top: -10px;
    right: 15px;
    padding: 0.1rem 0.5rem;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.status-quiet { color: var(--quiet); border-color: var(--quiet); }
.status-moderate { color: var(--moderate); border-color: var(--moderate); }
.status-loud { color: var(--loud); border-color: var(--loud); background: #fee2e2; }

/* Too Noisy Alert */
.too-noisy-alert {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 5rem;
    font-weight: 900;
    color: var(--loud);
    text-transform: uppercase;
    text-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
    opacity: 0;
    pointer-events: none;
    z-index: 50;
    transition: opacity 0.2s ease, transform 0.2s ease;
    text-align: center;
    width: 100%;
}

.too-noisy-alert.active {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
    animation: shake 0.5s infinite;
}

@keyframes shake {
    0% { transform: translate(-50%, -50%) scale(1.1) rotate(0deg); }
    25% { transform: translate(-51%, -49%) scale(1.1) rotate(-1deg); }
    50% { transform: translate(-50%, -50%) scale(1.1) rotate(0deg); }
    75% { transform: translate(-49%, -51%) scale(1.1) rotate(1deg); }
    100% { transform: translate(-50%, -50%) scale(1.1) rotate(0deg); }
}

@media (max-width: 768px) {
    .too-noisy-alert { font-size: 3rem; }
}

.app-viewport {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    z-index: 1;
}

/* Canvas */
.canvas-container {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-main);
    padding: 0.2rem;
}

@media (max-width: 1024px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .controls {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        padding-top: 1rem;
        border-top: 1px solid var(--border-color);
        margin-top: 0.5rem;
    }
    
    .controls.active {
        display: flex;
    }
    
    .control-group {
        justify-content: space-between;
    }
    
    .util-range {
        width: 100%;
        max-width: 200px;
    }
    
    .meter-container {
        bottom: 10px;
        width: 95%;
        padding: 0.8rem;
    }
}

}