:root {
    --metal-bg: #0a0b0f;
    --metal-panel: #14161b;
    --metal-accent: #e30613;
    --metal-accent-soft: rgba(227, 6, 19, 0.15);
    --metal-text: #f4f4f5;
    --metal-muted: #a8a8b3;
}

body {
    background: radial-gradient(circle at top, #1b1e26, var(--metal-bg));
    color: var(--metal-text);
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

.metal-page {
    max-width: 1600px;
    margin: 0 auto;
    padding: 40px 20px 60px;
    display: grid;
    gap: 28px;
}

.metal-hero {
    display: grid;
    gap: 8px;
}

    .metal-hero h1 {
        font-size: 2.6rem;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        margin: 0;
    }

    .metal-hero p {
        margin: 0;
        color: var(--metal-muted);
        font-size: 1.05rem;
    }

.metal-panel {
    background: var(--metal-panel);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 14px;
    padding: 24px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.metal-form {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    align-items: end;
}

    .metal-form label {
        font-size: 0.85rem;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        color: var(--metal-muted);
    }

.metal-input,
.metal-select {
    margin-top: 8px;
    width: 100%;
    background: #0f1116;
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--metal-text);
    padding: 10px 12px;
    border-radius: 10px;
}

.metal-button {
    background: linear-gradient(135deg, var(--metal-accent), #ff3c41);
    color: #fff;
    border: none;
    padding: 12px 18px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.diagram-section {
    display: grid;
    justify-items: center;
}

.play-controls {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 10px;
}

    .play-controls .play-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
    }

.diagram-image-container {
    position: relative;
    display: inline-block;
    max-width: 100%;
}

.diagram-hotspots {
    position: absolute;
    left: 0;
    top: 0;
    pointer-events: none;
}

.note-hotspot {
    appearance: none;
    -webkit-appearance: none;
    position: absolute;
    transform: translate(-50%, -50%);
    border-radius: 999px;
    border: 1px solid rgba(227, 6, 19, 0.65);
    background: rgba(227, 6, 19, 0.18);
    pointer-events: auto;
    cursor: pointer;
    padding: 0;
}

    .note-hotspot:hover {
        background: rgba(227, 6, 19, 0.35);
    }

    .note-hotspot.playing {
        border-color: rgba(255, 90, 90, 0.95);
        box-shadow: 0px 0px 6px 6px rgba(255, 72, 72, 0.69);
    }

.diagram-image {
    display: block;
    max-width: 100%;
    background: #000;
    padding: 0;
}

.relative-scale {
    margin: 0;
    color: var(--metal-muted);
    font-size: 0.95rem;
}

.mode-info {
    margin: 0;
    color: var(--metal-accent);
    font-size: 0.9rem;
    font-style: italic;
}

.link-lists {
    width: 100%;
    display: grid;
    gap: 20px;
}

.link-list {
    display: grid;
    gap: 12px;
}

    .link-list h2 {
        margin: 0;
        font-size: 1.05rem;
        letter-spacing: 0.08em;
        text-transform: uppercase;
    }

    .link-list ul {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

.link-pill {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    border-radius: 999px;
    text-decoration: none;
    color: var(--metal-text);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid transparent;
    font-size: 0.9rem;
}

    .link-pill.active {
        background: var(--metal-accent-soft);
        border-color: var(--metal-accent);
        color: #fff;
    }

    .link-pill:hover {
        border-color: rgba(255, 255, 255, 0.25);
    }

.branding-banner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--metal-muted);
    text-decoration: none;
    font-size: 0.85rem;
    width: fit-content;
}

    .branding-banner span {
        color: var(--metal-text);
        font-weight: 600;
        letter-spacing: 0.04em;
    }

body.embedded .metal-hero {
    display: none;
}

body.embedded .metal-page {
    padding: 0;
}

body.embedded .metal-panel {
    padding: 0;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
    .metal-page {
        padding: 20px 12px 40px;
        gap: 16px;
    }

    .metal-hero h1 {
        font-size: 1.6rem;
    }

    .metal-hero p {
        font-size: 0.9rem;
    }

    .metal-panel {
        padding: 16px;
        border-radius: 10px;
    }

    .metal-form {
        gap: 12px;
        grid-template-columns: repeat(2, 1fr);
    }

        .metal-form > div:last-child {
            grid-column: span 2;
        }

    .metal-button {
        width: 100%;
    }

    .link-pill {
        padding: 6px 10px;
        font-size: 0.8rem;
    }

    .link-list h2 {
        font-size: 0.95rem;
    }

    .branding-banner {
        font-size: 0.75rem;
        padding: 5px 10px;
    }
}

/* Mobile landscape specific */
@media (max-width: 900px) and (max-height: 500px) and (orientation: landscape) {
    .metal-page {
        padding: 0;
        gap: 10px;
    }

    .metal-hero {
        display: none;
    }

    .branding-banner {
        display: none;
    }

    .metal-panel {
        padding: 0;
        border-radius: 8px;
    }

    .metal-form {
        gap: 8px;
        grid-template-columns: repeat(5, 1fr);
        align-items: end;
    }

        .metal-form > div:last-child {
            grid-column: auto;
        }

        .metal-form label {
            font-size: 0.7rem;
            margin-bottom: 2px;
        }

    .metal-input,
    .metal-select {
        margin-top: 4px;
        padding: 6px 8px;
        font-size: 0.85rem;
        border-radius: 6px;
    }

    .metal-button {
        padding: 8px 12px;
        font-size: 0.8rem;
    }

    .diagram-section h2 {
        font-size: 1rem;
        margin-bottom: 6px;
    }

    .relative-scale {
        font-size: 0.8rem;
        margin-bottom: 6px;
    }

    .diagram-image {
        padding: 0;
        width: auto;
        object-fit: contain;
    }

    .link-lists {
        gap: 10px;
    }

    .link-list {
        gap: 6px;
    }

        .link-list h2 {
            font-size: 0.85rem;
        }

        .link-list ul {
            gap: 6px;
        }

    .link-pill {
        padding: 4px 8px;
        font-size: 0.75rem;
    }
}

/* Extra small mobile screens */
@media (max-width: 480px) {
    .metal-page {
        padding: 12px 8px 30px;
    }

    .metal-hero h1 {
        font-size: 1.3rem;
    }

    .metal-hero p {
        font-size: 0.85rem;
        display: none;
    }

    .metal-panel {
        padding: 12px;
    }

    .metal-form {
        grid-template-columns: 1fr 1fr;
    }

    .link-list ul {
        gap: 6px;
    }

    .link-pill {
        padding: 5px 8px;
        font-size: 0.75rem;
    }
}