:root {
    --bg: #171c1f;
    --bg-soft: #232a2f;
    --panel: #2b3238;
    --panel-alt: #313940;
    --line: #47515a;
    --line-strong: #dc011f;
    --text: #f7f7f7;
    --muted: #b9c0c6;
    --accent: #86c502;
    --shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top, rgba(220, 1, 31, 0.12), transparent 35%),
        linear-gradient(180deg, #20272c 0%, #171c1f 100%);
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
}

button {
    font: inherit;
}

.app-shell {
    width: min(1480px, calc(100% - 32px));
    margin: 0 auto;
    padding: 32px 0 40px;
}

.hero {
    margin-bottom: 24px;
}

.eyebrow,
.section-kicker {
    margin: 0 0 10px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.76rem;
    color: var(--accent);
}

.hero h1,
.section-heading h2,
.grid-intro h2 {
    margin: 0;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1.05;
}

.intro {
    max-width: 760px;
    margin: 14px 0 0;
    color: var(--muted);
    line-height: 1.6;
    font-size: 1.05rem;
}

.workspace {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.78fr);
    gap: 20px;
    align-items: start;
}

.panel {
    background: rgba(43, 50, 56, 0.88);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 24px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.controls-panel,
.preview-panel {
    padding: 24px;
}

.section-heading {
    margin-bottom: 20px;
}

.iso-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 22px;
}

.iso-button {
    min-width: 82px;
    padding: 12px 16px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
    cursor: pointer;
    transition: 0.22s ease;
}

.iso-button:hover,
.iso-button:focus-visible {
    border-color: var(--line-strong);
    transform: translateY(-1px);
}

.iso-button.is-active {
    background: #ffffff;
    color: var(--line-strong);
    border-color: #ffffff;
    font-weight: 700;
}

.selection-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.selection-summary--preview {
    margin-top: 18px;
    margin-bottom: 0;
}

.summary-card {
    padding: 16px 18px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.summary-label {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 0.88rem;
}

.summary-card strong {
    font-size: 1.2rem;
}

.grid-panel {
    padding: 20px;
    border-radius: 22px;
    background: rgba(0, 0, 0, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.grid-intro {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: end;
    margin-bottom: 18px;
}

.grid-help {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
    text-align: right;
}

.grid-scroll {
    overflow: visible;
}

.camera-grid {
    --grid-columns: 112px repeat(9, minmax(0, 1fr));
    display: grid;
    grid-template-columns: var(--grid-columns);
    gap: 6px;
    min-width: 0;
}

.grid-corner,
.grid-header,
.grid-speed,
.camera-cell {
    border-radius: 16px;
}

.grid-corner,
.grid-header,
.grid-speed {
    position: sticky;
    z-index: 2;
}

.grid-corner,
.grid-header {
    top: 0;
}

.grid-corner {
    left: 0;
    z-index: 4;
    padding: 12px 14px;
    background: #1e2529;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.grid-header {
    padding: 10px 6px;
    text-align: center;
    background: #1e2529;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.grid-header img {
    width: 34px;
    height: auto;
    margin: 0 auto 6px;
}

.grid-header strong {
    display: block;
    font-size: 0.86rem;
}

.grid-header span,
.grid-corner span {
    display: block;
    font-size: 0.75rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.14em;
}

.grid-speed {
    left: 0;
    z-index: 3;
    display: flex;
    align-items: center;
    padding: 0 10px;
    min-height: 56px;
    background: #22292e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-weight: 700;
    font-size: 0.9rem;
}

.camera-cell {
    min-height: 56px;
    border: 1px solid var(--line);
    background-color: #909090;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    cursor: pointer;
    transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.camera-cell:hover,
.camera-cell:focus-visible {
    transform: translateY(-1px);
    border-color: #ff5c70;
    outline: none;
}

.camera-cell.is-active {
    border-color: var(--line-strong);
    box-shadow: inset 0 0 0 1px rgba(220, 1, 31, 0.4), 0 0 0 1px rgba(220, 1, 31, 0.28);
}

.preview-panel {
    position: sticky;
    top: 24px;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: start;
    margin-bottom: 18px;
}

.preview-title {
    font-family: "Courier New", monospace;
    font-size: clamp(1rem, 1.8vw, 1.45rem);
    padding: 14px 16px;
    border-radius: 16px;
    background: #111517;
    color: var(--accent);
    border: 1px solid rgba(255, 255, 255, 0.08);
    flex: 1;
}

.preview-badge {
    padding: 10px 12px;
    border-radius: 999px;
    background: rgba(134, 197, 2, 0.12);
    color: var(--accent);
    font-size: 0.82rem;
    white-space: nowrap;
}

.preview-media {
    position: relative;
    overflow: hidden;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: #111517;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.preview-media #photo {
    width: 100%;
    aspect-ratio: 16 / 11;
    object-fit: cover;
}

.preview-logo {
    position: absolute;
    left: 16px;
    bottom: 16px;
    width: 58px;
}

.return {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text);
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
    transition: 0.2s ease;
}

.return:hover,
.return:focus-visible {
    border-color: var(--line-strong);
    color: #ffffff;
}

@media (max-width: 1380px) {
    .workspace {
        grid-template-columns: 1fr;
    }

    .preview-panel {
        position: static;
    }
}

@media (max-width: 900px) {
    .grid-scroll {
        overflow: auto;
        padding-bottom: 4px;
    }

    .camera-grid {
        --grid-columns: 120px repeat(9, minmax(78px, 1fr));
        min-width: 820px;
        gap: 8px;
    }
}

@media (max-width: 720px) {
    .app-shell {
        width: min(100% - 20px, 1480px);
        padding-top: 18px;
    }

    .controls-panel,
    .preview-panel {
        padding: 18px;
        border-radius: 20px;
    }

    .selection-summary {
        grid-template-columns: 1fr;
    }

    .grid-intro,
    .preview-header {
        flex-direction: column;
        align-items: stretch;
    }

    .grid-help {
        text-align: left;
    }

    .camera-grid {
        min-width: 860px;
    }

    .preview-logo {
        width: 50px;
        left: 12px;
        bottom: 12px;
    }
}