@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;700&display=swap');

:root {
    --bg: #f7f5f0;
    --panel: #ffffff;
    --panel-muted: #ece6dc;
    --text: #171717;
    --muted: #5e5b57;
    --accent: #e63946;
    --border: #171717;
    --shadow: 8px 8px 0 0 var(--border);
    --max-width: 1180px;
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', Arial, Helvetica, sans-serif;
    background:
        linear-gradient(135deg, rgba(230, 57, 70, 0.08), transparent 35%),
        var(--bg);
    color: var(--text);
}

body.embed-mode {
    background: var(--bg);
}

body.embed-mode .hero,
body.embed-mode .docs-grid,
body.embed-mode .form-panel {
    display: none;
}

body.embed-mode .page-shell {
    max-width: 560px;
    padding-top: 32px;
}

body.embed-mode .tool-grid {
    grid-template-columns: 1fr;
}

body.embed-mode .preview-panel {
    min-height: auto;
}

body.embed-mode .panel-header p,
body.embed-mode #resultLabel {
    text-align: center;
}

h1,
h2,
h3 {
    font-family: 'Space Grotesk', Arial, Helvetica, sans-serif;
    text-transform: uppercase;
    letter-spacing: -0.04em;
    margin: 0;
}

p {
    margin: 0;
    line-height: 1.6;
}

a {
    color: inherit;
}

code {
    padding: 0.1rem 0.35rem;
    background: rgba(23, 23, 23, 0.08);
    color: inherit;
    font-size: 0.95em;
}

.page-shell {
    width: min(calc(100% - 32px), var(--max-width));
    margin: 0 auto;
    padding: 48px 0 80px;
}

.hero {
    margin-bottom: 32px;
}

.back-link {
    display: inline-block;
    margin-bottom: 22px;
    font-weight: 700;
    text-transform: uppercase;
    text-decoration: none;
}

.eyebrow {
    margin-bottom: 12px;
    color: var(--accent);
    font-size: 0.86rem;
    font-weight: 800;
    letter-spacing: 0.18em;
}

.hero h1 {
    font-size: clamp(3rem, 7vw, 5.5rem);
    line-height: 0.92;
    margin-bottom: 18px;
}

.hero-copy {
    max-width: 760px;
    font-size: 1.1rem;
    color: var(--muted);
}

.tool-grid,
.docs-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.panel {
    background: var(--panel);
    border: 3px solid var(--border);
    box-shadow: var(--shadow);
    padding: 28px;
}

.panel-header {
    margin-bottom: 24px;
}

.panel-header h2 {
    margin-bottom: 8px;
    font-size: 1.45rem;
}

.panel-header p {
    color: var(--muted);
}

.generator-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.field-label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.92rem;
    font-weight: 700;
    text-transform: uppercase;
}

textarea,
input[type="range"] {
    width: 100%;
}

textarea {
    resize: vertical;
    min-height: 150px;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: 0;
    background: var(--panel);
    color: var(--text);
    font: inherit;
}

.field-row {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.range-wrap {
    display: flex;
    align-items: center;
    gap: 14px;
}

.range-wrap span {
    min-width: 64px;
    font-weight: 700;
}

.checkbox-row {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: var(--panel-muted);
    border: 2px solid var(--border);
}

.checkbox-row label {
    font-weight: 700;
}

.checkbox-row input {
    width: 20px;
    height: 20px;
}

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

button {
    cursor: pointer;
    border: 2px solid var(--border);
    border-radius: 0;
    padding: 0.9rem 1.2rem;
    font: inherit;
    font-weight: 800;
    text-transform: uppercase;
    transition: transform 0.2s ease;
}

button:hover {
    transform: translate(-2px, -2px);
}

.primary-btn {
    background: var(--accent);
    color: #ffffff;
}

.secondary-btn {
    background: var(--panel);
    color: var(--text);
}

.helper-card {
    margin-top: 22px;
    padding: 18px;
    background: var(--panel-muted);
    border: 2px solid var(--border);
}

.helper-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.helper-copy {
    color: var(--muted);
}

.helper-card code,
.example-list code {
    display: block;
    overflow-wrap: anywhere;
    padding: 0.9rem 1rem;
    margin-top: 0.85rem;
    background: #121212;
    color: #f7f5f0;
    border: 2px solid var(--border);
    font-size: 0.95rem;
}

.preview-panel {
    min-height: 100%;
}

.empty-state,
.canvas-wrap {
    display: grid;
    place-items: center;
    min-height: 360px;
    border: 2px dashed var(--border);
    background: linear-gradient(180deg, rgba(230, 57, 70, 0.04), rgba(0, 0, 0, 0));
}

.empty-state p {
    color: var(--muted);
    font-weight: 600;
}

.qr-result {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.qr-result.is-hidden {
    display: none;
}

.canvas-wrap {
    padding: 30px;
}

#qrCanvas {
    display: block;
    max-width: 100%;
    height: auto;
    background: #ffffff;
}

.result-label {
    font-size: 0.98rem;
    color: var(--muted);
    overflow-wrap: anywhere;
}

.docs-grid {
    margin-top: 24px;
}

.example-list {
    padding-left: 1.2rem;
    margin: 0;
    line-height: 1.8;
}

@media (max-width: 920px) {
    .tool-grid,
    .docs-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .page-shell {
        width: min(calc(100% - 20px), var(--max-width));
        padding-top: 24px;
    }

    .panel {
        padding: 20px;
    }

    .button-row {
        flex-direction: column;
    }

    button {
        width: 100%;
    }
}