:root {
    --qt-bg: #f5f1ea;
    --qt-surface: #ffffff;
    --qt-surface-soft: #f8f6f1;
    --qt-border: #dfd8cd;
    --qt-text: #1f1f1f;
    --qt-muted: #61655f;
    --qt-accent: #1d5e4f;
    --qt-accent-dark: #15483c;
    --qt-preview: #f3f5f2;
    --qt-shadow: 0 16px 44px rgba(30, 38, 28, 0.09);
    --qt-radius: 24px;
}

body {
    min-height: 100vh;
    background: linear-gradient(180deg, #f7f3ec 0%, #f1f4ef 100%);
    color: var(--qt-text);
}

.page-intro {
    max-width: 48rem;
    margin-bottom: 1.5rem;
}

.hero-shell {
    overflow: hidden;
    border: 1px solid var(--qt-border);
    border-radius: var(--qt-radius);
    background: var(--qt-surface);
    box-shadow: var(--qt-shadow);
}

.panel {
    min-height: 100%;
}

.panel-form {
    background: var(--qt-surface);
}

.panel-preview {
    background: var(--qt-surface-soft);
    border-top: 1px solid var(--qt-border);
}

.panel-inner {
    padding: 1.5rem;
}

.eyebrow {
    margin-bottom: 0.75rem;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--qt-accent);
}

.display-title,
.preview-title {
    font-weight: 700;
    line-height: 1.08;
}

.display-title {
    margin-bottom: 0.75rem;
    font-size: clamp(2rem, 4vw, 3rem);
}

.lead-copy,
.preview-copy,
.download-title,
.download-copy,
.section-copy,
.form-text,
.empty-state span {
    color: var(--qt-muted);
}

.lead-copy,
.preview-copy,
.section-copy,
.download-copy {
    margin-bottom: 0;
}

.form-section {
    padding: 1rem;
    border: 1px solid var(--qt-border);
    border-radius: 20px;
    background: var(--qt-surface);
}

.section-head,
.download-head {
    margin-bottom: 0.9rem;
}

.section-title,
.preview-title {
    margin-bottom: 0.35rem;
    font-size: 1.125rem;
    font-weight: 700;
}

.preview-inner {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    height: 100%;
}

.preview-frame {
    display: grid;
    place-items: center;
    min-height: 320px;
    padding: 1.25rem;
    border: 1px dashed rgba(29, 94, 79, 0.26);
    border-radius: 20px;
    background:
        linear-gradient(45deg, rgba(255, 255, 255, 0.75) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.75) 75%),
        linear-gradient(45deg, rgba(255, 255, 255, 0.75) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.75) 75%);
    background-position: 0 0, 14px 14px;
    background-size: 28px 28px;
    background-color: var(--qt-preview);
}

.preview-frame.is-ready {
    border-style: solid;
}

.preview-image {
    width: min(100%, 320px);
    height: auto;
    border-radius: 16px;
    background: white;
    box-shadow: 0 10px 28px rgba(30, 60, 43, 0.12);
}

.empty-state {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    align-items: center;
    text-align: center;
}

.download-card {
    padding: 1rem;
    border: 1px solid var(--qt-border);
    border-radius: 20px;
    background: var(--qt-surface);
}

.download-title {
    margin-bottom: 0.2rem;
    font-weight: 600;
}

.form-control,
.form-select,
.btn,
.form-control-color {
    min-height: 3rem;
    border-radius: 14px;
}

.form-control,
.form-select,
.form-control-color,
.btn-outline-secondary {
    border-color: #d5d8d3;
}

.form-control:focus,
.form-select:focus,
.form-check-input:focus,
.btn:focus {
    box-shadow: 0 0 0 0.25rem rgba(23, 98, 76, 0.18);
}

.form-control-color {
    width: 100%;
    padding: 0.35rem;
}

.btn-primary {
    --bs-btn-bg: var(--qt-accent);
    --bs-btn-border-color: var(--qt-accent);
    --bs-btn-hover-bg: var(--qt-accent-dark);
    --bs-btn-hover-border-color: var(--qt-accent-dark);
    --bs-btn-active-bg: var(--qt-accent-dark);
    --bs-btn-active-border-color: var(--qt-accent-dark);
}

@media (min-width: 992px) {
    .panel-preview {
        border-top: 0;
        border-left: 1px solid var(--qt-border);
    }

    .panel-inner {
        padding: 2rem;
    }
}

@media (prefers-reduced-motion: no-preference) {
    .hero-shell,
    .preview-image,
    .btn {
        transition: box-shadow 180ms ease, transform 180ms ease, border-color 180ms ease;
    }

    .hero-shell:hover {
        box-shadow: 0 18px 50px rgba(39, 47, 36, 0.11);
    }

    .preview-image:hover {
        transform: translateY(-2px);
    }
}