:root {
    --bg: #f1f5f9;
    --panel: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --border: #e2e8f0;
    --accent: #2563eb;
    --accent-dark: #1d4ed8;
    --danger: #dc2626;
    --success: #16a34a;
    --warning: #d97706;
    --shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
input, textarea, select, button {
    font: inherit;
}
input, textarea, select {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.7rem 0.8rem;
    background: #fff;
    color: var(--text);
}
textarea { resize: vertical; }
label { display: grid; gap: 0.45rem; font-weight: 650; }
hr { border: 0; border-top: 1px solid var(--border); margin: 1rem 0; }

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem clamp(1rem, 4vw, 2rem);
    background: rgba(255,255,255,0.92);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(14px);
}
.brand { color: var(--text); font-size: 1.25rem; font-weight: 850; letter-spacing: 0; }
.nav { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.inline-form { display: inline; }
.link-button, .danger-link {
    border: 0;
    background: transparent;
    color: var(--accent);
    padding: 0;
    cursor: pointer;
}
.danger-link { color: var(--danger); }

.page { width: min(1500px, calc(100% - 2rem)); margin: 1.5rem auto 4rem; }
.hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.7fr); gap: 2rem; align-items: center; padding: 4rem 0; }
.hero h1 { font-size: clamp(2.4rem, 6vw, 5rem); line-height: 0.95; letter-spacing: 0; margin: 0.2rem 0 1rem; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 66ch; }
.eyebrow { color: var(--accent); text-transform: uppercase; font-size: 0.78rem; font-weight: 850; letter-spacing: 0; margin: 0 0 0.4rem; }
.hero-actions, .header-actions, .card-actions { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    border: 1px solid var(--accent);
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    padding: 0.75rem 1rem;
    font-weight: 750;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.18);
}
.button:hover { background: var(--accent-dark); text-decoration: none; }
.button.ghost { background: #fff; color: var(--accent); box-shadow: none; }
.button.small { padding: 0.45rem 0.75rem; font-size: 0.9rem; }
.button.danger { background: var(--danger); border-color: var(--danger); }

.hero-card, .panel, .auth-card, .form-card, .kpi, .public-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: var(--shadow);
}
.hero-card { padding: 1rem; min-height: 340px; }
.mini-toolbar { display: flex; gap: 0.45rem; padding: 0.25rem 0 1rem; }
.mini-toolbar span { width: 12px; height: 12px; border-radius: 50%; background: var(--border); }
.preview-form-skeleton { display: grid; gap: 1rem; padding: 1rem; }
.skeleton { height: 48px; border-radius: 14px; background: linear-gradient(90deg, #e2e8f0, #f8fafc, #e2e8f0); }
.skeleton.h { height: 80px; }
.skeleton.short { width: 55%; }
.feature-grid, .cards-grid, .kpi-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.feature-grid article, .form-card, .kpi { padding: 1.25rem; }
.feature-grid article { background: rgba(255,255,255,0.65); border: 1px solid var(--border); border-radius: 18px; }

.flash-wrap { width: min(1100px, calc(100% - 2rem)); margin: 1rem auto 0; display: grid; gap: 0.5rem; }
.flash { padding: 0.8rem 1rem; border-radius: 14px; border: 1px solid var(--border); background: #fff; }
.flash.success { border-color: #bbf7d0; background: #f0fdf4; color: #166534; }
.flash.danger { border-color: #fecaca; background: #fef2f2; color: #991b1b; }
.flash.warning { border-color: #fed7aa; background: #fff7ed; color: #9a3412; }
.inline-note { display: inline-block; margin: 0.5rem 0 0; }

.auth-card { width: min(520px, 100%); margin: 3rem auto; padding: 2rem; }
.auth-card.wide { width: min(760px, 100%); }
.stack { display: grid; gap: 1rem; }
.stack.compact { gap: 0.75rem; }
.muted { color: var(--muted); }
.small-text { font-size: 0.9rem; }
.check-row { display: flex; align-items: center; gap: 0.55rem; font-weight: 600; }
.check-row input { width: auto; }

.section-heading, .builder-header, .panel-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}
.section-heading h1, .builder-header h1 { margin: 0; font-size: clamp(2rem, 5vw, 3.2rem); letter-spacing: 0; }
.panel { padding: 1.25rem; margin-bottom: 1rem; }
.form-card h2 { margin-bottom: 0.3rem; }
.card-topline { display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.badge { display: inline-flex; padding: 0.25rem 0.55rem; border-radius: 999px; font-size: 0.76rem; font-weight: 800; background: #e2e8f0; color: #334155; text-transform: uppercase; letter-spacing: 0; }
.badge.public, .badge.accepted { background: #dcfce7; color: #166534; }
.badge.private, .badge.pending { background: #fef3c7; color: #92400e; }
.badge.draft { background: #e2e8f0; color: #334155; }
.stats-line { display: flex; gap: 1.5rem; margin: 1rem 0; }
.stats-line dt { color: var(--muted); font-size: 0.8rem; }
.stats-line dd { margin: 0; font-size: 1.4rem; font-weight: 850; }
.empty-state { text-align: center; padding: 4rem 1rem; background: rgba(255,255,255,0.55); border: 1px dashed #cbd5e1; border-radius: 20px; }

.builder-meta .meta-grid { display: grid; grid-template-columns: repeat(4, minmax(180px, 1fr)); gap: 1rem; }
.link-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; margin-top: 1rem; }
.copy-row { display: flex; gap: 0.5rem; align-items: center; }
.copy-row input { min-width: 0; }
.builder-layout { display: grid; grid-template-columns: minmax(200px, 240px) minmax(360px, 1fr) minmax(280px, 340px); gap: 1rem; align-items: start; }
.palette-panel, .inspector-panel { position: sticky; top: 5.5rem; }
.palette-panel, .canvas-panel, .inspector-panel { min-width: 0; }
.palette { display: grid; grid-template-columns: 1fr; gap: 0.55rem; }
.palette button {
    border: 1px solid var(--border);
    background: #f8fafc;
    border-radius: 12px;
    padding: 0.75rem;
    text-align: left;
    cursor: grab;
    font-weight: 750;
}
.palette button:disabled { opacity: 0.55; cursor: not-allowed; }
.builder-canvas { min-height: 360px; padding: 0.75rem; border: 1px dashed #cbd5e1; border-radius: 16px; background: #f8fafc; display: grid; gap: 0.75rem; align-content: start; }
.drop-empty { display: grid; place-items: center; min-height: 260px; color: var(--muted); text-align: center; }
.field-card { display: grid; grid-template-columns: auto 1fr auto; gap: 0.75rem; align-items: center; border: 1px solid var(--border); border-radius: 16px; background: #fff; padding: 0.8rem; cursor: pointer; }
.field-card.selected { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
.field-card.dragging { opacity: 0.45; }
.drag-handle { color: #94a3b8; cursor: grab; }
.field-card-title { font-weight: 850; }
.field-card-meta { display: flex; gap: 0.45rem; flex-wrap: wrap; color: var(--muted); font-size: 0.84rem; }
.field-card-meta span { background: #f1f5f9; padding: 0.15rem 0.45rem; border-radius: 999px; }
.field-card-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; justify-content: flex-end; }
.field-card-actions button { border: 1px solid var(--border); border-radius: 999px; background: #fff; padding: 0.35rem 0.55rem; cursor: pointer; }
.field-card-actions button:disabled { opacity: 0.45; cursor: not-allowed; }
.inspector-id { color: var(--muted); font-size: 0.8rem; background: #f8fafc; border-radius: 10px; padding: 0.45rem; word-break: break-all; }
.inspector-empty { color: var(--muted); }
.style-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; }
.style-grid > label:not(.color-field) { grid-column: 1 / -1; }
.color-field { gap: 0.45rem; }
.color-control {
    --selected-color: #ffffff;
    display: flex;
    align-items: center;
    gap: 0.55rem;
    min-height: 44px;
    border: 1px solid var(--selected-color);
    border-radius: 12px;
    padding: 0.35rem 0.5rem;
    background: #fff;
}
.color-swatch {
    width: 1.35rem;
    height: 1.35rem;
    border-radius: 50%;
    background: var(--selected-color);
    border: 1px solid rgba(15,23,42,0.18);
    flex: 0 0 auto;
}
.color-control input[type="color"] {
    height: 2rem;
    min-width: 0;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.preview-section { margin-top: 1rem; }
.segmented { display: inline-flex; padding: 0.25rem; gap: 0.25rem; border: 1px solid var(--border); border-radius: 999px; background: #f8fafc; }
.segmented button { border: 0; background: transparent; border-radius: 999px; padding: 0.45rem 0.75rem; cursor: pointer; font-weight: 750; color: var(--muted); }
.segmented button.active { background: #fff; color: var(--accent); box-shadow: 0 2px 10px rgba(15,23,42,0.08); }
.preview-wrap { overflow-x: auto; padding: 1rem; background: #e2e8f0; border-radius: 18px; }
.preview-frame { margin: auto; min-height: 500px; padding: 1rem; transition: width 0.2s ease; }
.preview-frame.mobile { width: min(390px, 100%); }
.preview-frame.tablet { width: min(768px, 100%); }
.preview-frame.desktop { width: 100%; }
.preview-card { width: 100%; margin: 0 auto; box-shadow: none; }
.builder-bottom-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.qr-layout { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 1rem; align-items: start; }
.qr-preview { width: 240px; max-width: 100%; border: 1px solid var(--border); border-radius: 16px; background: #fff; }
.export-links { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.export-links a { border: 1px solid var(--border); border-radius: 999px; padding: 0.45rem 0.7rem; background: #fff; font-weight: 750; }
.export-links.inline { justify-content: flex-end; }
.save-status { position: fixed; right: 1rem; bottom: 1rem; transform: translateY(120%); transition: transform 0.2s ease; padding: 0.8rem 1rem; border-radius: 999px; background: #0f172a; color: #fff; box-shadow: var(--shadow); z-index: 20; }
.save-status.show { transform: translateY(0); }
.save-status.danger { background: var(--danger); }

.table-scroll { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.data-table th, .data-table td { border-bottom: 1px solid var(--border); padding: 0.75rem; text-align: left; vertical-align: top; }
.data-table th { background: #f8fafc; font-size: 0.85rem; color: #334155; }
.data-table tr:target { outline: 3px solid rgba(37,99,235,0.18); outline-offset: -3px; background: #eff6ff; }
.owner-row { margin-bottom: 1rem; }
.invite-form { display: grid; grid-template-columns: 1fr 240px auto; gap: 1rem; align-items: end; }
.analytics-filter-grid, .submission-filter-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(150px, 1fr)) auto;
    gap: 1rem;
    align-items: end;
}
.submission-filter-grid { grid-template-columns: repeat(6, minmax(130px, 1fr)) auto auto; }

.kpi-grid { margin-bottom: 1rem; }
.kpi span { display: block; color: var(--muted); font-weight: 750; }
.kpi strong { display: block; font-size: clamp(1.4rem, 3vw, 2.1rem); letter-spacing: 0; margin-top: 0.4rem; }
.kpi small { display: block; color: var(--muted); font-weight: 650; margin-top: 0.2rem; }
.analytics-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 1rem; }
.compact-title { align-items: flex-start; }
.bars { display: grid; gap: 0.8rem; }
.bar-label { display: flex; justify-content: space-between; gap: 1rem; font-size: 0.9rem; }
.bar-track { height: 10px; border-radius: 999px; background: #e2e8f0; overflow: hidden; }
.bar-track span { display: block; height: 100%; border-radius: inherit; background: var(--accent); }
.drill-row { display: grid; gap: 0.35rem; color: var(--text); }
.drill-row:hover { text-decoration: none; }
.drill-table { display: grid; border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.drill-table-head, .drill-table-row {
    display: grid;
    grid-template-columns: minmax(180px, 1.5fr) 0.6fr 0.6fr minmax(120px, 0.8fr) auto;
    gap: 0.75rem;
    align-items: center;
    padding: 0.75rem;
}
.drill-table-head { background: #f8fafc; color: #334155; font-size: 0.85rem; font-weight: 800; }
.drill-table-row { border-top: 1px solid var(--border); }
.drill-table-row small { display: block; color: var(--muted); font-weight: 650; }
.drill-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: flex-end; }
.drill-actions a {
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.25rem 0.55rem;
    background: #fff;
    font-weight: 750;
}
.mini-meter { display: inline-block; width: 56px; height: 8px; margin-right: 0.45rem; border-radius: 999px; background: #e2e8f0; overflow: hidden; vertical-align: middle; }
.mini-meter i { display: block; height: 100%; background: var(--accent); border-radius: inherit; }
.timing-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 0.5rem; margin-bottom: 1rem; }
.timing-grid div { border: 1px solid var(--border); border-radius: 12px; padding: 0.65rem; background: #f8fafc; }
.timing-grid span { display: block; color: var(--muted); font-size: 0.78rem; font-weight: 800; }
.timing-grid strong { font-size: 1.15rem; }
.hour-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 0.35rem; }
.hour-grid span { aspect-ratio: 1; border-radius: 6px; background: rgba(37,99,235,var(--heat-alpha, 0.08)); border: 1px solid rgba(37,99,235,0.12); }
.choice-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.choice-card { border: 1px solid var(--border); border-radius: 16px; padding: 1rem; }
.choice-line { display: flex; justify-content: space-between; gap: 1rem; padding: 0.4rem 0; border-bottom: 1px solid #f1f5f9; }
.choice-drill { color: var(--text); align-items: center; }
.choice-drill:hover { text-decoration: none; color: var(--accent); }
.choice-drill small { display: block; width: 100%; min-width: 120px; height: 6px; margin-top: 0.3rem; border-radius: 999px; background: #e2e8f0; overflow: hidden; }
.choice-drill small i { display: block; height: 100%; border-radius: inherit; background: var(--accent); }
.recent-submission-list { display: grid; gap: 0.65rem; }
.recent-submission {
    display: grid;
    grid-template-columns: minmax(150px, 0.7fr) auto minmax(220px, 1.4fr);
    gap: 1rem;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 0.75rem;
    color: var(--text);
    background: #fff;
}
.recent-submission:hover { text-decoration: none; border-color: var(--accent); }
.recent-submission small, .recent-submission em { color: var(--muted); font-style: normal; }
.recent-submission span { display: grid; }

.public-body {
    background: var(--public-bg, #f8fafc);
    color: var(--public-text, #0f172a);
    font-family: var(--font-family, system-ui), system-ui, sans-serif;
}
.public-shell { width: min(860px, calc(100% - 2rem)); margin: 0 auto; padding: 3rem 0; }
.public-card { background: var(--card-bg, #fff); border-color: var(--card-border, var(--border)); border-radius: var(--radius, 14px); padding: clamp(1.25rem, 4vw, 2.5rem); }
.public-header { margin-bottom: 1.5rem; }
.public-header h1 { margin: 0.2rem 0 0.5rem; letter-spacing: 0; font-size: clamp(2rem, 5vw, 3.2rem); }
.public-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.public-field { grid-column: span 2; display: grid; gap: 0.45rem; }
.public-field.half { grid-column: span 1; }
.public-field input, .public-field textarea, .public-field select { border-color: var(--field-border, #cbd5e1); }
.public-field:focus-within input, .public-field:focus-within textarea, .public-field:focus-within select { outline: 3px solid color-mix(in srgb, var(--accent) 20%, transparent); border-color: var(--accent); }
fieldset.public-field { border: 1px solid var(--field-border, #cbd5e1); border-radius: 14px; padding: 1rem; }
legend { font-weight: 750; }
.required, .error { color: var(--danger); }
.help { display: block; color: #64748b; font-size: 0.9rem; font-weight: 500; }
.choice-list { display: grid; gap: 0.55rem; margin-top: 0.35rem; }
.choice-list label { display: flex; align-items: center; gap: 0.5rem; font-weight: 600; }
.choice-list input { width: auto; }
.rating-list { grid-template-columns: repeat(5, auto); justify-content: start; }
.form-heading { grid-column: 1 / -1; margin: 1rem 0 0; font-size: 1.35rem; }
.form-paragraph { grid-column: 1 / -1; color: #475569; margin: 0; }
.form-separator { grid-column: 1 / -1; width: 100%; }
.public-submit { grid-column: 1 / -1; border-color: var(--accent); background: var(--accent); justify-self: start; margin-top: 0.5rem; }
.powered { margin: 1.5rem 0 0; color: #64748b; font-size: 0.85rem; }
.thank-you { text-align: center; }
.success-icon { width: 64px; height: 64px; border-radius: 50%; display: inline-grid; place-items: center; background: #dcfce7; color: #166534; font-size: 2rem; font-weight: 900; }

@media (max-width: 1120px) {
    .builder-layout { grid-template-columns: 1fr; }
    .palette-panel, .inspector-panel { position: static; }
    .palette { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .builder-meta .meta-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .analytics-filter-grid, .submission-filter-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .recent-submission { grid-template-columns: 1fr; }
    .builder-bottom-grid, .analytics-grid { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
    .hero { grid-template-columns: 1fr; padding: 2rem 0; }
    .feature-grid, .cards-grid, .kpi-grid { grid-template-columns: 1fr; }
    .section-heading, .builder-header, .panel-title-row { align-items: flex-start; flex-direction: column; }
    .builder-meta .meta-grid, .link-grid, .invite-form, .qr-layout { grid-template-columns: 1fr; }
    .style-grid { grid-template-columns: 1fr; }
    .palette { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .drill-table-head { display: none; }
    .drill-table-row { grid-template-columns: 1fr; align-items: stretch; }
    .drill-actions { justify-content: flex-start; }
    .timing-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .hour-grid { grid-template-columns: repeat(8, minmax(0, 1fr)); }
    .public-form { grid-template-columns: 1fr; }
    .public-field, .public-field.half { grid-column: 1; }
    .topbar { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 520px) {
    .page { width: min(100% - 1rem, 1500px); margin-top: 0.75rem; }
    .panel, .auth-card, .form-card { border-radius: 16px; padding: 1rem; }
    .analytics-filter-grid, .submission-filter-grid { grid-template-columns: 1fr; }
    .palette { grid-template-columns: 1fr; }
    .field-card { grid-template-columns: 1fr; }
    .field-card-actions { justify-content: flex-start; }
    .copy-row { flex-direction: column; align-items: stretch; }
}