:root {
    --bg-color: #0a0b0d;
    --text-main: #b8bdc5;
    --accent-cyan: #62b5b5;
    --error-red: #d15a5a;
    --border-color: #3b424a;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Courier New', Courier, monospace;
    margin: 0;
    padding: 20px;
    text-transform: uppercase;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 30px 30px;
}

h1, h2 {
    font-weight: normal;
    margin-top: 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    letter-spacing: 2px;
}

.container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

main {
    display: flex;
    gap: 20px;
}

.panel {
    border: 1px solid var(--border-color);
    padding: 20px;
    background: rgba(10, 11, 13, 0.85);
    position: relative;
}

/* Distressed corner accents */
.panel::before, .panel::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    border: 1px solid var(--text-main);
}
.panel::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.panel::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.aural-input {
    flex: 2;
    display: flex;
    flex-direction: column;
}

.wireframe-visual {
    flex-grow: 1;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed var(--border-color);
    margin: 20px 0;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, rgba(0,0,0,0) 60%);
}

.meta-data {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: #7a8491;
}

button {
    background-color: var(--accent-cyan);
    color: #000;
    border: none;
    padding: 12px 24px;
    font-family: inherit;
    font-weight: bold;
    cursor: pointer;
    letter-spacing: 1px;
    transition: background-color 0.2s, transform 0.1s;
}

button:hover {
    background-color: #fff;
}

button:active {
    transform: scale(0.98);
}

.sidebar {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

li {
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.fft-placeholder {
    height: 150px;
    border-bottom: 1px dotted var(--border-color);
    margin-top: 15px;
}

.ok { color: var(--text-main); }
.pending { color: var(--accent-cyan); }
.error { color: var(--error-red); }