@charset "UTF-8";

:root {
    --bs-body-font-family: "Source Sans 3", sans-serif;
    --echo-serif: "Libre Baskerville", serif;
    --echo-bg: #0d1117;
    --echo-panel: #161d2a;
    --echo-border: rgba(255, 255, 255, 0.1);
    --echo-accent: #7cc4ff;
    --echo-green: #9ee6a8;
    --echo-pink: #f5a3b7;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background:
        radial-gradient(circle at top left, rgba(124, 196, 255, 0.13), transparent 28%),
        radial-gradient(circle at bottom right, rgba(245, 163, 183, 0.1), transparent 28%),
        linear-gradient(180deg, #0b1016 0%, var(--echo-bg) 36%, #0e1420 100%);
}

main {
    flex: 1;
}

a {
    color: var(--echo-accent);
}

a:hover,
a:focus {
    color: #a9d9ff;
}

h1,
h2 {
    font-family: var(--echo-serif);
}

.demo-shell,
.control-card,
.visualizer-card,
.history-card {
    background: linear-gradient(180deg, rgba(27, 36, 51, 0.96), rgba(20, 27, 38, 0.96));
    border-color: var(--echo-border) !important;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

.demo-shell {
    max-width: 76rem;
}

.demo-header .lead {
    text-wrap: balance;
}

.privacy-note {
    color: #d8e3ef;
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--echo-border) !important;
}

.effect-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.6rem;
}

.effect-button {
    min-height: 4.7rem;
    padding: 0.7rem;
    color: #dce7f3;
    text-align: left;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--echo-border);
    border-radius: 0.75rem;
    font-weight: 700;
    line-height: 1.1;
    transition: border-color 160ms ease, transform 160ms ease, background-color 160ms ease;
}

.effect-button span {
    display: block;
    margin-top: 0.35rem;
    color: var(--bs-secondary-color);
    font-size: 0.82rem;
    font-weight: 400;
    line-height: 1.25;
}

.effect-button:hover:not(:disabled),
.effect-button:focus-visible:not(:disabled),
.effect-button.is-active {
    border-color: rgba(124, 196, 255, 0.58);
    background: rgba(124, 196, 255, 0.13);
}

.effect-button:hover:not(:disabled),
.effect-button:focus-visible:not(:disabled) {
    transform: translateY(-1px);
}

.effect-button.is-active {
    color: #ffffff;
}

.effect-button:disabled {
    cursor: not-allowed;
    opacity: 0.58;
}

.visualizer-wrap {
    position: relative;
    display: grid;
    min-height: clamp(18rem, 54vw, 31rem);
    place-items: center;
    overflow: hidden;
    background:
        radial-gradient(circle, rgba(124, 196, 255, 0.08), transparent 42%),
        rgba(255, 255, 255, 0.025);
    border-color: var(--echo-border) !important;
}

#visualizerCanvas {
    display: block;
    width: 100%;
    height: 100%;
}

.visualizer-center {
    position: absolute;
    inset: 50% auto auto 50%;
    width: min(52%, 16rem);
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.history-list {
    display: grid;
    gap: 0.75rem;
}

.recording-item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.75rem;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--echo-border);
    border-radius: 0.75rem;
}

.recording-waveform {
    display: block;
    width: 100%;
    height: 3.1rem;
    border-radius: 0.5rem;
    background: rgba(0, 0, 0, 0.18);
}

.recording-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.recording-actions .btn {
    white-space: nowrap;
}

.btn-primary {
    --bs-btn-bg: #2f6ea5;
    --bs-btn-border-color: #2f6ea5;
    --bs-btn-hover-bg: #3b7fbb;
    --bs-btn-hover-border-color: #3b7fbb;
    --bs-btn-active-bg: #285f8d;
    --bs-btn-active-border-color: #285f8d;
}

.btn-outline-light {
    --bs-btn-hover-color: #0d1117;
}

.btn:focus-visible,
.effect-button:focus-visible {
    box-shadow: 0 0 0 0.25rem rgba(124, 196, 255, 0.22);
}

footer {
    background: rgba(0, 0, 0, 0.08);
}

@media (max-width: 575.98px) {
    main {
        padding-top: 0.75rem !important;
        padding-bottom: 1rem !important;
    }

    .container {
        padding-inline: 0.75rem;
    }

    .demo-shell {
        border-radius: 1rem !important;
        padding: 0.85rem !important;
    }

    .demo-header h1 {
        font-size: 2.15rem;
    }

    .demo-header .lead {
        font-size: 1rem;
    }

    .visualizer-wrap {
        min-height: clamp(15.5rem, 72vw, 20rem);
    }

    .status-card {
        display: none;
    }

    .visualizer-card .card-body,
    .control-card .card-body,
    .history-card .card-body {
        padding: 0.85rem !important;
    }

    .effect-button {
        min-height: 3.7rem;
        padding: 0.55rem;
        font-size: 0.92rem;
    }

    .effect-button span {
        margin-top: 0.25rem;
        font-size: 0.74rem;
    }

    .recording-item {
        grid-template-columns: 1fr;
    }

    .recording-actions .btn {
        flex: 1;
    }

    footer {
        font-size: 0.9rem;
    }
}