:root {
    color-scheme: dark;
    --bg: #06070d;
    --surface: rgba(16, 20, 33, 0.92);
    --ink: #f5f7fb;
    --muted: #97a2bd;
    --line: rgba(255,255,255,0.1);
    --line-strong: rgba(255,255,255,0.16);
    --radius-3xl: 34px;
    --radius-2xl: 28px;
    --radius-xl: 22px;
    --radius-lg: 18px;
    --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Inter", "Segoe UI", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top right, rgba(124, 58, 237, 0.18), transparent 20%),
        radial-gradient(circle at bottom left, rgba(34, 211, 238, 0.12), transparent 20%),
        linear-gradient(180deg, #06070d 0%, #020307 100%);
}

button, input, select, textarea, a { font: inherit; }

.shell {
    width: min(1500px, calc(100% - 40px));
    margin: 28px auto 40px;
}

.hero-band, .stage-card, .builder-card, .output-card {
    border: 1px solid var(--line);
    background: var(--surface);
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-lg);
}

.hero-band {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 24px;
    padding: 34px;
    margin-bottom: 24px;
}

.eyebrow {
    margin: 0;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(151, 162, 189, 0.84);
}

h1, h2 {
    margin: 0;
    letter-spacing: -0.04em;
}

h1 {
    margin-top: 10px;
    font-size: 30px;
    line-height: 1;
}

h2 {
    font-size: 1.66rem;
    line-height: 1.02;
}

.lead, .section-head p, .line-list { color: var(--muted); }

.lead {
    margin: 16px 0 0;
    line-height: 1.72;
    max-width: 780px;
}

.hero-notes {
    display: grid;
    align-content: start;
    gap: 10px;
}

.hero-notes span {
    display: inline-flex;
    width: fit-content;
    min-height: 40px;
    padding: 0 16px;
    align-items: center;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(124,58,237,0.24), rgba(34,211,238,0.16));
    border: 1px solid rgba(255,255,255,0.08);
    font-weight: 800;
}

.generator-grid {
    display: grid;
    gap: 22px;
    align-items: start;
}

.stage-column, .builder-column, .output-column {
    display: grid;
    gap: 18px;
}

.workspace-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 22px;
    align-items: start;
}

.output-column {
    position: sticky;
    top: 24px;
}

.stage-card, .builder-card, .output-card {
    padding: 24px;
}

.builder-shell {
    display: grid;
    gap: 18px;
}

.section-head {
    display: grid;
    gap: 10px;
    margin-bottom: 18px;
}

.section-head.compact {
    margin-bottom: 16px;
}

.section-head p {
    margin: 0;
    line-height: 1.7;
}

.family-switch {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.family-chip {
    min-height: 42px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255,255,255,0.03);
    color: var(--ink);
    font-weight: 700;
}

.family-chip.is-active {
    background: linear-gradient(180deg, rgba(124,58,237,0.36), rgba(34,211,238,0.2));
    border-color: rgba(124,58,237,0.44);
}

.hero-stage {
    padding: 20px;
    border-radius: var(--radius-2xl);
    border: 1px solid rgba(255,255,255,0.08);
    background:
        linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0)),
        linear-gradient(45deg, rgba(255,255,255,0.02) 25%, transparent 25%, transparent 50%, rgba(255,255,255,0.02) 50%, rgba(255,255,255,0.02) 75%, transparent 75%, transparent);
    background-size: auto, 18px 18px;
}

.hero-preview {
    --hero-bg: #0B1020;
    --hero-accent: #7C3AED;
    --hero-accent-soft: #22D3EE;
    --hero-text: #F8FAFC;
    --hero-image: none;
    min-height: 620px;
    padding: 42px;
    border-radius: 34px;
    display: grid;
    gap: 24px;
    position: relative;
    overflow: hidden;
    color: var(--hero-text);
    background:
        radial-gradient(circle at top right, color-mix(in srgb, var(--hero-accent) 32%, transparent), transparent 28%),
        radial-gradient(circle at bottom left, color-mix(in srgb, var(--hero-accent-soft) 24%, transparent), transparent 24%),
        linear-gradient(180deg, color-mix(in srgb, var(--hero-bg) 92%, black), var(--hero-bg));
}

.hero-preview::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: var(--hero-image);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    opacity: 0;
    transform: scale(1.02);
    transition: opacity 160ms ease;
    pointer-events: none;
}

.hero-preview.has-image::before {
    opacity: 0.34;
}

.hero-preview.family-split {
    grid-template-columns: minmax(0, 1.2fr) minmax(240px, 0.8fr);
    align-items: center;
}

.hero-preview.family-spotlight {
    grid-template-columns: 1fr;
    align-content: center;
}

.hero-preview.family-centered {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    align-content: center;
}

.preview-badge {
    display: inline-flex;
    width: fit-content;
    min-height: 34px;
    padding: 0 14px;
    align-items: center;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.preview-copy {
    display: grid;
    gap: 18px;
    align-content: start;
    position: relative;
    z-index: 1;
}

.preview-copy h1 {
    margin: 0;
    font-size: 2.6rem;
    line-height: 0.96;
    letter-spacing: -0.05em;
}

.preview-subtitle {
    margin: 0;
    max-width: 620px;
    color: rgba(248, 250, 252, 0.78);
    line-height: 1.75;
}

.preview-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.preview-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 20px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 800;
}

.preview-button.primary {
    color: #fff;
    background: linear-gradient(135deg, var(--hero-accent), color-mix(in srgb, var(--hero-accent) 72%, black));
}

.preview-button.secondary {
    color: var(--hero-text);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
}

.preview-panel {
    display: grid;
    align-self: center;
    position: relative;
    z-index: 1;
}

.panel-shell {
    padding: 24px;
    border-radius: 28px;
    background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

.panel-eyebrow {
    margin: 0 0 10px;
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(248, 250, 252, 0.7);
}

.panel-shell strong {
    display: block;
    margin-bottom: 10px;
    font-size: 1.25rem;
    letter-spacing: -0.03em;
}

.panel-shell p {
    margin: 0;
    color: rgba(248, 250, 252, 0.74);
    line-height: 1.7;
}

.field-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.field {
    display: grid;
    gap: 10px;
}

.field-full {
    grid-column: 1 / -1;
}

.field > span {
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(151, 162, 189, 0.84);
}

input[type="text"], textarea, select {
    width: 100%;
    min-height: 58px;
    padding: 0 16px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.04);
    color: var(--ink);
}

textarea {
    min-height: 120px;
    padding: 16px;
    resize: vertical;
}

#bg-image-url {
    font-family: "SFMono-Regular", "Consolas", monospace;
    font-size: 0.96rem;
}

input[type="text"]:focus, textarea:focus, select:focus {
    outline: 0;
    border-color: rgba(124,58,237,0.5);
    box-shadow: 0 0 0 4px rgba(124,58,237,0.14);
}

select {
    appearance: none;
    padding-right: 52px;
    background-image:
        linear-gradient(45deg, transparent 50%, rgba(255,255,255,0.86) 50%),
        linear-gradient(135deg, rgba(255,255,255,0.86) 50%, transparent 50%);
    background-position: calc(100% - 24px) calc(50% - 3px), calc(100% - 16px) calc(50% - 3px);
    background-size: 8px 8px, 8px 8px;
    background-repeat: no-repeat;
}

.color-row {
    display: grid;
    grid-template-columns: 74px minmax(0, 1fr);
    gap: 12px;
}

input[type="color"] {
    width: 100%;
    min-height: 58px;
    padding: 0;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.04);
}

.action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

button, .ghost-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 20px;
    border-radius: 999px;
    font-weight: 800;
    cursor: pointer;
}

button {
    border: 0;
    color: #fff;
    background: linear-gradient(180deg, #7c3aed, color-mix(in srgb, #7c3aed 76%, black));
}

.ghost-button {
    border: 1px solid var(--line);
    background: rgba(255,255,255,0.04);
    color: var(--ink);
}

.code-block {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    color: #d9e1ff;
    line-height: 1.72;
}

.line-list {
    margin: 12px 0 0;
    padding-left: 18px;
    line-height: 1.8;
}

.ad-slot, .ad-placeholder {
    min-height: 320px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255,255,255,0.04);
    overflow: hidden;
}

.ad-placeholder {
    padding: 16px;
}

.ad-mockup {
    position: relative;
    min-height: 286px;
    height: 100%;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
}

.ad-mockup::before {
    content: "";
    position: absolute;
    inset: 14px;
    border-radius: 14px;
    border: 1px dashed rgba(255,255,255,0.12);
}

.ad-mockup-top, .ad-mockup-media, .ad-mockup-badge, .ad-mockup-lines { position: absolute; }

.ad-mockup-top {
    top: 24px;
    left: 24px;
    width: 110px;
    height: 18px;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
}

.ad-mockup-media {
    inset: 78px 24px 106px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(124,58,237,.18), rgba(34,211,238,.14));
}

.ad-mockup-lines {
    left: 24px;
    right: 24px;
    bottom: 28px;
    display: grid;
    gap: 10px;
}

.ad-mockup-lines span {
    display: block;
    height: 12px;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
}

.ad-mockup-lines span:last-child {
    width: 58%;
}

.ad-mockup-badge {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 142px;
    height: 142px;
    border-radius: 50%;
    display: grid;
    place-content: center;
    background: linear-gradient(135deg, #7c3aed, #22d3ee);
    color: #fff;
}

.ad-mockup-badge span {
    font-size: 1.35rem;
    font-weight: 800;
    line-height: 1;
    text-align: center;
    letter-spacing: 0.08em;
}

@media (max-width: 1320px) {
    .workspace-row {
        grid-template-columns: 1fr;
    }

    .output-column {
        position: static;
    }
}

@media (max-width: 920px) {
    .hero-band, .field-grid, .hero-preview.family-split {
        grid-template-columns: 1fr;
    }

    .hero-preview {
        min-height: 560px;
        padding: 30px;
    }
}

@media (max-width: 720px) {
    .shell {
        width: min(100% - 24px, 1500px);
    }

    .hero-band, .stage-card, .builder-card, .output-card {
        padding: 20px;
        border-radius: 24px;
    }

    .color-row {
        grid-template-columns: 1fr;
    }
}