:root {
  color-scheme: dark;
  --bg: #090d12;
  --bg-soft: #10161f;
  --panel: rgba(18, 25, 35, 0.9);
  --panel-strong: #151d29;
  --ink: #eef4fb;
  --muted: #9eacbc;
  --line: rgba(160, 176, 194, 0.18);
  --accent: #5eead4;
  --accent-2: #8bb7ff;
  --danger: #ff9a8b;
  --warn: #ffd166;
  --ok: #78e6a4;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f9fc;
  --bg-soft: #eef3f8;
  --panel: rgba(255, 255, 255, 0.92);
  --panel-strong: #ffffff;
  --ink: #17202c;
  --muted: #647285;
  --line: rgba(44, 59, 77, 0.16);
  --accent: #0f8c7d;
  --accent-2: #315fd8;
  --danger: #b42318;
  --warn: #9b6100;
  --ok: #157348;
  --shadow: 0 24px 60px rgba(31, 45, 61, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 10%, rgba(94, 234, 212, 0.16), transparent 30%),
    radial-gradient(circle at 82% 5%, rgba(139, 183, 255, 0.16), transparent 28%),
    var(--bg);
  color: var(--ink);
  min-height: 100vh;
}

button,
input {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
p,
figure {
  margin: 0;
}

.site-header {
  align-items: center;
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 20px;
  justify-content: space-between;
  padding: 16px clamp(18px, 4vw, 56px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-weight: 800;
  gap: 10px;
  letter-spacing: 0;
}

.brand-mark {
  align-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 8px;
  color: #041016;
  display: inline-flex;
  font-size: 13px;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.usage-counter {
  align-items: center;
  background: rgba(255,255,255,.035);
  border: 1px solid var(--line);
  border-radius: 13px;
  display: flex;
  gap: 13px;
  padding: 7px 13px;
}

.usage-counter span { align-items: baseline; display: flex; gap: 6px; }
.usage-counter strong { color: var(--ink); font-size: 15px; }
.usage-counter small { color: var(--muted); font-size: 10px; text-transform: uppercase; }
.usage-counter i { background: var(--line); height: 22px; width: 1px; }

.nav {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

.nav a:not(.button) {
  color: var(--muted);
}

.button,
.theme-toggle {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  font-weight: 750;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #041016;
}

.button-ghost,
.theme-toggle {
  background: color-mix(in srgb, var(--panel) 85%, transparent);
  color: var(--ink);
}

.theme-toggle {
  width: 42px;
}

.hero {
  display: grid;
  gap: clamp(28px, 5vw, 72px);
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  min-height: calc(100vh - 84px);
  padding: clamp(48px, 8vw, 96px) clamp(18px, 5vw, 72px);
}

.hero-copy {
  align-self: center;
  display: grid;
  gap: 24px;
  max-width: 680px;
}

.eyebrow {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(52px, 8vw, 108px);
  line-height: 0.94;
}

.hero-tagline {
  color: var(--muted);
  font-size: clamp(18px, 2vw, 25px);
  line-height: 1.55;
}

.hero-actions,
.submit-row,
.results-head {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-product {
  align-self: center;
}

.mock-window,
.auth-card,
.upload-panel,
.side-panel,
.results-section,
.engine-card,
.legal-page {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.mock-window {
  padding: 18px;
}

.mock-toolbar {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.mock-toolbar span {
  background: var(--line);
  border-radius: 999px;
  height: 10px;
  width: 10px;
}

.mock-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr 1fr;
}

.mock-preview {
  aspect-ratio: 4 / 5;
  border-radius: 8px;
}

.mock-preview.before {
  background: linear-gradient(135deg, #2f4a5c, #111923);
}

.mock-preview.after {
  background: linear-gradient(135deg, #65dcc8, #6f8fe9);
}

.mock-rows {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.mock-rows span {
  background: var(--line);
  border-radius: 999px;
  height: 12px;
}

.mock-rows span:nth-child(2) { width: 76%; }
.mock-rows span:nth-child(3) { width: 54%; }

.section-band,
.dashboard,
.legal-page {
  margin: 0 auto;
  max-width: 1240px;
  padding: 36px clamp(18px, 4vw, 48px) 72px;
}

.section-heading {
  display: grid;
  gap: 12px;
  max-width: 760px;
}

.section-heading h2 {
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.08;
}

.feature-grid,
.preview-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 28px;
}

.feature-grid article,
.preview-card,
.validation-card {
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.feature-grid span {
  color: var(--accent);
  font-weight: 800;
}

.feature-grid h3 {
  margin: 18px 0 8px;
}

.feature-grid p,
.legal-page p,
.auth-card p,
.dashboard-head p,
.side-panel p,
.preview-card p {
  color: var(--muted);
  line-height: 1.6;
}

.auth-shell {
  display: grid;
  min-height: calc(100vh - 78px);
  padding: 34px 18px;
  place-items: center;
}

.auth-card {
  display: grid;
  gap: 26px;
  max-width: 460px;
  padding: 32px;
  width: 100%;
}

.auth-card h1,
.dashboard-head h1,
.legal-page h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.05;
  margin: 8px 0 10px;
}

.stack {
  display: grid;
  gap: 14px;
}

label {
  color: var(--muted);
  display: grid;
  gap: 8px;
  font-size: 14px;
}

input[type="password"] {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  min-height: 44px;
  padding: 10px 12px;
  width: 100%;
}

.form-error,
.bad,
.warning {
  color: var(--danger);
}

.form-success,
.good,
.status-ok {
  color: var(--ok);
}

.status-warn {
  color: var(--warn);
}

.dashboard {
  display: grid;
  gap: 22px;
}

.dashboard-head {
  align-items: end;
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
}

.engine-card {
  display: grid;
  gap: 7px;
  padding: 18px;
}

.engine-card small {
  color: var(--muted);
  line-height: 1.45;
}

.workbench {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr) 340px;
}

.upload-panel,
.side-panel,
.results-section {
  padding: 20px;
}

.dropzone {
  align-items: center;
  border: 1px dashed color-mix(in srgb, var(--accent) 45%, var(--line));
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  min-height: 190px;
  padding: 24px;
  place-items: center;
  text-align: center;
}

.dropzone.is-dragging {
  background: color-mix(in srgb, var(--accent) 13%, transparent);
}

.dropzone input {
  height: 1px;
  opacity: 0;
  position: absolute;
  width: 1px;
}

.dropzone strong {
  display: block;
  font-size: 22px;
}

.dropzone span {
  color: var(--muted);
  display: block;
  margin-top: 6px;
}

.control-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 0.6fr 1fr;
  margin-top: 18px;
}

.background-control {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 1.2fr);
  margin-top: 14px;
  padding: 16px;
}

.background-control span {
  color: var(--muted);
  display: block;
  margin-top: 4px;
}

.color-input {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  height: 39px;
  padding: 3px;
  width: 62px;
}

fieldset {
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 16px;
}

legend {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  padding: 0 7px;
}

fieldset label {
  cursor: pointer;
  display: inline-flex;
}

fieldset input {
  height: 1px;
  opacity: 0;
  position: absolute;
  width: 1px;
}

fieldset span,
.pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  display: inline-flex;
  font-size: 13px;
  font-weight: 750;
  padding: 8px 12px;
}

fieldset input:checked + span {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  border-color: var(--accent);
}

.client-validation {
  margin-top: 18px;
}

.validation-head {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
}

.validation-head span,
td span {
  color: var(--muted);
}

.preset-grid,
.validation-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.preset-grid {
  margin-top: 16px;
}

.preset-grid article {
  background: color-mix(in srgb, var(--panel-strong) 82%, transparent);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 5px;
  padding: 12px;
}

.preset-grid span,
.preset-grid small {
  color: var(--muted);
  line-height: 1.45;
}

.validation-card {
  align-items: center;
  display: grid;
  gap: 12px;
  grid-template-columns: 72px minmax(0, 1fr);
  padding: 12px;
}

.validation-card img {
  aspect-ratio: 1;
  border-radius: 8px;
  object-fit: cover;
  width: 72px;
}

.validation-card strong,
.validation-card span,
.validation-card small {
  display: block;
  overflow-wrap: anywhere;
}

.validation-card span {
  color: var(--muted);
  font-size: 13px;
  margin: 4px 0;
}

.submit-row {
  margin-top: 18px;
}

.progress-shell {
  background: var(--bg-soft);
  border-radius: 999px;
  flex: 1;
  height: 10px;
  min-width: 180px;
  overflow: hidden;
}

.progress-shell span {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  display: block;
  height: 100%;
  width: 0;
}

.messages {
  background: color-mix(in srgb, var(--danger) 10%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--danger) 35%, var(--line));
  border-radius: 8px;
  color: var(--danger);
  display: grid;
  gap: 8px;
  padding: 16px;
}

.results-section {
  display: grid;
  gap: 20px;
}

.results-head {
  justify-content: space-between;
}

.results-head h2 {
  font-size: 30px;
}

.preview-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0;
}

.preview-card {
  display: grid;
  gap: 14px;
}

.before-after {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr 1fr;
}

.before-after figure {
  background: var(--flatten-bg, var(--bg-soft));
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.checkerboard {
  background-color: #fff;
  background-image:
    linear-gradient(45deg, #d8dee7 25%, transparent 25%),
    linear-gradient(-45deg, #d8dee7 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #d8dee7 75%),
    linear-gradient(-45deg, transparent 75%, #d8dee7 75%);
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-size: 16px 16px;
}

.before-after img {
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
  width: 100%;
}

.before-after figcaption {
  background: rgba(0, 0, 0, 0.58);
  border-radius: 999px;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  left: 8px;
  padding: 5px 8px;
  position: absolute;
  top: 8px;
}

.preview-card h3 {
  overflow-wrap: anywhere;
}

.warning {
  display: block;
  margin-top: 6px;
}

.debug-grid {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 14px 0 0;
  padding-top: 12px;
}

.debug-grid div {
  display: grid;
  gap: 3px;
}

.debug-grid dt {
  color: var(--muted);
  font-size: 12px;
}

.debug-grid dd {
  margin: 0;
}

.table-wrap {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  min-width: 1040px;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 14px 10px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

td span {
  display: block;
  margin-top: 5px;
}

.pill {
  margin: 0 6px 6px 0;
  padding: 6px 10px;
}

.pill-ok {
  border-color: color-mix(in srgb, var(--ok) 55%, var(--line));
  color: var(--ok);
}

.pill-warn {
  border-color: color-mix(in srgb, var(--warn) 55%, var(--line));
  color: var(--warn);
}

.legal-page {
  margin-top: 46px;
  min-height: 48vh;
}

.legal-page p + p {
  margin-top: 16px;
}

.footer {
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  padding: 24px clamp(18px, 4vw, 56px);
}

.footer div {
  display: flex;
  gap: 14px;
}

.simple-app {
  display: grid;
  gap: 24px;
  margin: 0 auto;
  max-width: 1180px;
  padding: 34px clamp(16px, 4vw, 42px) 72px;
}

.simple-hero {
  align-items: center;
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr) 280px;
}

.simple-hero h1 {
  font-size: clamp(38px, 6vw, 74px);
  line-height: 1;
  max-width: 850px;
}

.simple-hero p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.55;
  max-width: 720px;
}

.mode-card {
  background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 18%, var(--panel)), var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 7px;
  padding: 20px;
}

.mode-card span {
  color: var(--accent);
  font-weight: 800;
}

.mode-card p,
.help-row p,
.empty-state p,
.result-summary p {
  color: var(--muted);
  line-height: 1.5;
}

.simple-uploader {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 18px;
  padding: clamp(16px, 3vw, 26px);
}

.step-flow {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.step-flow article {
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  gap: 12px;
  padding: 14px;
}

.step-flow span {
  align-items: center;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
  border-radius: 999px;
  color: var(--accent);
  display: inline-flex;
  font-weight: 900;
  height: 32px;
  justify-content: center;
  width: 32px;
}

.simple-dropzone {
  min-height: 250px;
}

.empty-illustration {
  display: grid;
  gap: 8px;
  grid-template-columns: 54px 54px 54px;
  justify-content: center;
  margin-bottom: 16px;
}

.empty-illustration span {
  animation: floaty 2.8s ease-in-out infinite;
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 8px;
  opacity: 0.9;
}

.empty-illustration span:nth-child(2) {
  animation-delay: 0.18s;
  opacity: 0.7;
}

.empty-illustration span:nth-child(3) {
  animation-delay: 0.36s;
  opacity: 0.55;
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.quick-strip {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mode-option {
  cursor: pointer;
  display: block;
}

.mode-option input {
  height: 1px;
  opacity: 0;
  position: absolute;
  width: 1px;
}

.mode-option span,
.simple-presets label span {
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 5px;
  min-height: 82px;
  padding: 16px;
}

.mode-option input:checked + span,
.simple-presets label input:checked + span {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.mode-option small,
.simple-presets small,
.small-details small {
  color: var(--muted);
}

.advanced-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.advanced-panel summary {
  cursor: pointer;
  font-weight: 800;
  padding: 16px;
}

.advanced-content {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 18px;
  padding: 18px;
}

.advanced-content h2 {
  font-size: 18px;
  margin-bottom: 6px;
}

.advanced-content p {
  color: var(--muted);
}

.simple-presets {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.simple-presets label {
  cursor: pointer;
  display: block;
}

.simple-presets input {
  height: 1px;
  opacity: 0;
  position: absolute;
  width: 1px;
}

.advanced-row {
  align-items: center;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr) auto auto;
  padding-top: 18px;
}

.compact-fieldset {
  padding: 10px;
}

.select-label {
  min-width: 160px;
}

select {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  min-height: 42px;
  padding: 9px 10px;
}

.is-hidden {
  display: none !important;
}

.big-action {
  font-size: 17px;
  min-width: 190px;
  position: relative;
}

.big-action.is-loading {
  opacity: 0.82;
}

.big-action.is-loading::after {
  animation: spin 0.9s linear infinite;
  border: 2px solid rgba(4, 16, 22, 0.25);
  border-top-color: #041016;
  border-radius: 50%;
  content: "";
  height: 16px;
  margin-left: 10px;
  width: 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.help-row {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.help-row article,
.empty-state {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.success-section {
  animation: rise-in 0.42s ease-out;
}

@keyframes rise-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.big-preview-grid {
  grid-template-columns: 1fr;
}

.simple-result-card {
  gap: 18px;
  padding: 18px;
}

.big-before-after img {
  aspect-ratio: 16 / 10;
}

.result-summary {
  align-items: center;
  display: flex;
  gap: 16px;
  justify-content: space-between;
}

.result-summary h3 {
  overflow-wrap: anywhere;
}

.small-details {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.small-details summary {
  color: var(--muted);
  cursor: pointer;
}

.empty-state {
  display: grid;
  justify-items: center;
  min-height: 250px;
  place-content: center;
  text-align: center;
}

.empty-illustration.large {
  transform: scale(1.15);
}

.comparison-shell {
  display: grid;
}

.comparison-slider {
  aspect-ratio: 16 / 10;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.compare-img {
  height: 100%;
  inset: 0;
  object-fit: contain;
  position: absolute;
  width: 100%;
}

.compare-before {
  background: color-mix(in srgb, var(--bg-soft) 85%, transparent);
}

.compare-after-wrap {
  border-right: 2px solid #fff;
  box-shadow: 14px 0 24px rgba(0, 0, 0, 0.22);
  height: 100%;
  left: 0;
  overflow: hidden;
  position: absolute;
  top: 0;
  width: var(--split, 50%);
}

.compare-label {
  background: rgba(0, 0, 0, 0.62);
  border-radius: 999px;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  padding: 6px 9px;
  position: absolute;
  top: 10px;
  z-index: 2;
}

.before-label { left: 10px; }
.after-label { right: 10px; }

.compare-range {
  appearance: none;
  background: transparent;
  bottom: 14px;
  left: 8%;
  position: absolute;
  width: 84%;
  z-index: 3;
}

.compare-range::-webkit-slider-thumb {
  appearance: none;
  background: #fff;
  border: 3px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
  height: 26px;
  width: 26px;
}

.compare-range::-webkit-slider-runnable-track {
  background: rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  height: 6px;
}

.badge-row,
.improvement-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.badge {
  background: color-mix(in srgb, var(--panel-strong) 84%, transparent);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  display: inline-flex;
  font-size: 13px;
  font-weight: 800;
  padding: 7px 10px;
}

.badge-good {
  background: color-mix(in srgb, var(--ok) 13%, var(--panel-strong));
  border-color: color-mix(in srgb, var(--ok) 45%, var(--line));
  color: var(--ok);
}

.badge-soft {
  color: var(--muted);
}

.stats-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stats-grid article {
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 4px;
  padding: 13px;
}

.stats-grid span {
  color: var(--accent);
}

.stats-grid p {
  color: var(--ink);
  font-weight: 800;
}

.stats-grid small {
  color: var(--muted);
}

.friendly-note {
  background: color-mix(in srgb, var(--accent) 10%, var(--panel-strong));
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  border-radius: 8px;
  color: var(--ink);
  padding: 12px;
}

.technical-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 10px 0;
}

.technical-grid span {
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  padding: 10px;
}

@media (max-width: 980px) {
  .hero,
  .dashboard-head,
  .workbench,
  .control-grid,
  .background-control,
  .feature-grid,
  .preview-grid,
  .simple-hero,
  .quick-strip,
  .simple-presets,
  .advanced-row,
  .help-row {
    grid-template-columns: 1fr;
  }

  .step-flow {
    grid-template-columns: 1fr;
  }

  .stats-grid,
  .technical-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 640px) {
  .site-header,
  .nav,
  .footer {
    align-items: flex-start;
    display: grid;
  }

  .hero h1 {
    font-size: 46px;
  }

  .validation-grid,
  .before-after {
    grid-template-columns: 1fr;
  }

  .auth-card,
  .upload-panel,
  .side-panel,
  .results-section {
    padding: 16px;
  }
}

/* Premium 4K studio */
:root {
  --bg: #07090f;
  --bg-soft: #0d111b;
  --panel: rgba(16, 21, 32, 0.86);
  --panel-strong: #121824;
  --ink: #f6f8fc;
  --muted: #929daf;
  --line: rgba(177, 194, 220, 0.13);
  --accent: #7cf5d5;
  --accent-2: #8e9cff;
  --accent-3: #c084fc;
}

body {
  background:
    radial-gradient(circle at 18% -8%, rgba(93, 88, 255, 0.19), transparent 34%),
    radial-gradient(circle at 88% 14%, rgba(36, 220, 173, 0.10), transparent 31%),
    linear-gradient(180deg, #090b12 0%, var(--bg) 42%, #080a10 100%);
}

body::before {
  background-image: linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 44px 44px;
  content: "";
  inset: 0;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
  pointer-events: none;
  position: fixed;
  z-index: -1;
}

.site-header {
  background: rgba(7, 9, 15, 0.7);
  min-height: 72px;
}

.brand-mark {
  border-radius: 11px;
  box-shadow: 0 0 30px rgba(124, 245, 213, .2);
  font-size: 16px;
  height: 38px;
  width: 38px;
}

.nav a:not(.button) { font-size: 14px; }
.nav a:hover { color: var(--ink); }

.button,
.theme-toggle { border-radius: 12px; transition: transform .18s ease, border-color .18s ease, filter .18s ease; }
.button:hover { filter: brightness(1.06); transform: translateY(-1px); }
.button-primary { box-shadow: 0 12px 35px rgba(74, 221, 187, .14); }

.studio-app {
  display: grid;
  gap: 28px;
  margin: 0 auto;
  max-width: 1320px;
  padding: clamp(42px, 6vw, 82px) clamp(18px, 4vw, 52px) 84px;
}

.studio-hero {
  align-items: center;
  display: grid;
  gap: clamp(32px, 7vw, 94px);
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  min-height: 390px;
}

.studio-hero-copy { display: grid; gap: 18px; }
.status-pill {
  align-items: center;
  background: rgba(124, 245, 213, .07);
  border: 1px solid rgba(124, 245, 213, .2);
  border-radius: 999px;
  color: #bbfbea;
  display: inline-flex;
  font-size: 12px;
  font-weight: 750;
  gap: 8px;
  justify-self: start;
  padding: 7px 11px;
}
.status-pill span { background: var(--accent); border-radius: 50%; box-shadow: 0 0 12px var(--accent); height: 7px; width: 7px; }
.studio-hero h1,
.premium-landing h1 { font-size: clamp(50px, 7vw, 92px); letter-spacing: -.055em; line-height: .94; }
.studio-hero h1 em,
.premium-landing h1 em { background: linear-gradient(100deg, var(--accent), var(--accent-2) 55%, var(--accent-3)); background-clip: text; color: transparent; font-style: normal; }
.studio-lead { color: var(--muted); font-size: clamp(17px, 1.8vw, 21px); line-height: 1.65; max-width: 760px; }
.trust-row { color: #c7d0dc; display: flex; flex-wrap: wrap; font-size: 13px; gap: 18px; }
.trust-row span::first-letter { color: var(--accent); }

.engine-orb-card {
  align-items: center;
  background: linear-gradient(145deg, rgba(24,31,48,.86), rgba(12,16,25,.82));
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: 0 28px 90px rgba(0,0,0,.32), inset 0 1px rgba(255,255,255,.04);
  display: grid;
  gap: 22px;
  grid-template-columns: 126px 1fr;
  padding: 22px;
  position: relative;
}
.engine-orb-card::after { background: linear-gradient(90deg, transparent, rgba(124,245,213,.55), transparent); content: ""; height: 1px; inset: auto 18% 0; position: absolute; }
.engine-orb { background: radial-gradient(circle at 32% 28%, #b8fff0, #4fcbb5 30%, #5964d8 68%, #1c1736); border-radius: 34px; box-shadow: 0 18px 48px rgba(77,89,221,.35); display: grid; height: 126px; place-items: center; transform: rotate(-4deg); }
.engine-orb span { color: white; font-size: 33px; font-weight: 950; letter-spacing: -.05em; text-shadow: 0 3px 18px rgba(0,0,0,.35); transform: rotate(4deg); }
.engine-orb-card strong { font-size: 16px; }
.engine-orb-card p { color: var(--muted); font-size: 13px; line-height: 1.55; margin-top: 8px; }

.flow-rail { align-items: center; color: var(--muted); display: grid; font-size: 13px; grid-template-columns: auto 1fr auto 1fr auto; margin: 2px auto 0; max-width: 760px; width: 100%; }
.flow-rail span { align-items: center; display: flex; gap: 9px; white-space: nowrap; }
.flow-rail b { align-items: center; border: 1px solid var(--line); border-radius: 50%; display: inline-flex; height: 30px; justify-content: center; width: 30px; }
.flow-rail .is-active { color: var(--ink); }
.flow-rail .is-active b { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border: 0; color: #081019; }
.flow-rail i { background: var(--line); height: 1px; margin: 0 14px; }

.studio-workbench { display: grid; gap: 20px; grid-template-columns: minmax(0, 1.02fr) minmax(420px, .98fr); }
.studio-panel { background: linear-gradient(145deg, rgba(18,24,36,.9), rgba(11,15,24,.92)); border: 1px solid var(--line); border-radius: 24px; box-shadow: 0 26px 75px rgba(0,0,0,.25), inset 0 1px rgba(255,255,255,.035); padding: clamp(20px, 3vw, 30px); }
.panel-heading { align-items: center; display: flex; justify-content: space-between; margin-bottom: 21px; }
.panel-heading h2 { font-size: 23px; margin-top: 4px; }
.step-kicker { color: var(--accent); font-size: 10px; font-weight: 850; letter-spacing: .14em; }
.soft-badge { background: rgba(255,255,255,.04); border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 11px; padding: 7px 10px; }

.studio-dropzone { border: 1px dashed rgba(124,245,213,.34); border-radius: 20px; gap: 15px; min-height: 410px; padding: 34px; transition: background .2s ease, border-color .2s ease, transform .2s ease; }
.studio-dropzone:hover,
.studio-dropzone.is-dragging { background: rgba(124,245,213,.045); border-color: var(--accent); transform: translateY(-2px); }
.studio-dropzone strong { font-size: 23px; }
.studio-dropzone span { line-height: 1.5; }
.studio-dropzone small { color: #707c8e; display: block; font-size: 11px; margin-top: 8px; }
.upload-glyph { background: linear-gradient(145deg, rgba(124,245,213,.16), rgba(142,156,255,.11)); border: 1px solid rgba(124,245,213,.24); border-radius: 19px; display: grid; height: 76px; place-items: center; width: 76px; }
.upload-glyph svg { fill: none; height: 34px; stroke: var(--accent); stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.6; width: 34px; }
.browse-button { background: rgba(255,255,255,.055); border: 1px solid var(--line); border-radius: 11px; color: var(--ink) !important; font-size: 13px; font-weight: 750; padding: 10px 14px; }

.settings-stage { display: flex; flex-direction: column; }
.scale-lever { background: rgba(5,8,13,.48); border-radius: 16px; display: grid; gap: 6px; grid-template-columns: repeat(4, 1fr); padding: 6px; }
.scale-lever label { display: block; }
.scale-lever span { align-items: center; border: 0; border-radius: 12px; display: grid; gap: 2px; justify-items: center; min-height: 66px; padding: 9px 5px; width: 100%; }
.scale-lever b { font-size: 19px; }
.scale-lever small { color: var(--muted); font-size: 9px; text-transform: uppercase; }
.scale-lever input:checked + span { background: linear-gradient(135deg, var(--accent), #77dbe8 55%, var(--accent-2)); border: 0; box-shadow: 0 9px 25px rgba(97,225,205,.17); color: #071018; }
.scale-lever input:checked + span small { color: rgba(7,16,24,.65); }
.scale-summary { align-items: center; background: rgba(124,245,213,.055); border: 1px solid rgba(124,245,213,.13); border-radius: 14px; display: flex; gap: 12px; margin-top: 12px; padding: 12px; }
.scale-summary.has-error { background: rgba(255,154,139,.07); border-color: rgba(255,154,139,.3); }
.summary-icon { align-items: center; background: rgba(124,245,213,.12); border-radius: 9px; color: var(--accent); display: inline-flex; font-size: 18px; height: 37px; justify-content: center; width: 37px; }
.scale-summary div { display: grid; gap: 2px; }
.scale-summary small { color: var(--muted); font-size: 11px; line-height: 1.4; }

.quality-heading { align-items: end; display: flex; justify-content: space-between; margin: 27px 0 12px; }
.quality-heading h3 { font-size: 16px; }
.quality-heading span { color: var(--muted); font-size: 11px; }
.quality-grid { display: grid; gap: 10px; grid-template-columns: repeat(2, 1fr); }
.quality-option { cursor: pointer; display: block; }
.quality-option input { height: 1px; opacity: 0; position: absolute; width: 1px; }
.quality-option > span { background: rgba(255,255,255,.025); border: 1px solid var(--line); border-radius: 15px; display: grid; gap: 5px; min-height: 138px; padding: 15px; position: relative; }
.quality-option input:checked + span { background: linear-gradient(145deg, rgba(124,245,213,.075), rgba(142,156,255,.055)); border-color: rgba(124,245,213,.45); box-shadow: inset 0 0 0 1px rgba(124,245,213,.1); }
.quality-option input:disabled + span { cursor: not-allowed; opacity: .45; }
.quality-icon { color: var(--accent); font-size: 21px; font-style: normal; }
.quality-option b { font-size: 14px; }
.quality-option small { color: var(--muted); font-size: 11px; line-height: 1.45; }
.quality-option em { bottom: 13px; color: var(--accent); font-size: 9px; font-style: normal; font-weight: 800; letter-spacing: .06em; position: absolute; text-transform: uppercase; }

.premium-details { border-radius: 14px; margin-top: 15px; }
.premium-details summary { align-items: center; display: flex; justify-content: space-between; padding: 14px; }
.premium-details summary small { color: var(--muted); font-size: 10px; font-weight: 500; }
.premium-details .simple-presets { grid-template-columns: repeat(2, minmax(0,1fr)); }
.premium-details .simple-presets label span { min-height: 70px; padding: 12px; }
.studio-submit { display: grid; margin-top: auto; padding-top: 20px; }
.studio-submit .big-action { border-radius: 14px; display: flex; font-size: 14px; justify-content: space-between; min-height: 54px; padding: 13px 17px; width: 100%; }
.studio-submit .big-action b { font-size: 20px; }
.studio-submit .big-action:disabled { cursor: not-allowed; filter: grayscale(.8); opacity: .48; transform: none; }
.studio-submit .progress-shell { min-width: 100%; }
.studio-submit p { color: #6f7b8d; font-size: 10px; text-align: center; width: 100%; }

.validation-grid { grid-template-columns: 1fr; }
.validation-card { background: rgba(255,255,255,.025); border-radius: 14px; }
.validation-card.is-oversized { border-color: rgba(255,154,139,.45); }
.validation-card .target-size { font-weight: 750; margin: 3px 0; }
.soft-info { color: #aab5c5; }

.studio-results { background: linear-gradient(145deg, rgba(18,24,36,.92), rgba(11,15,24,.94)); border-radius: 24px; padding: clamp(20px, 3vw, 30px); scroll-margin-top: 90px; }
.studio-results .preview-card { border-radius: 18px; }
.studio-results .comparison-slider { border-radius: 15px; }
.download-action { white-space: nowrap; }
.studio-benefits { border-top: 1px solid var(--line); display: grid; gap: 22px; grid-template-columns: repeat(3, 1fr); margin-top: 24px; padding-top: 30px; }
.studio-benefits article { display: flex; gap: 14px; }
.studio-benefits article > span { color: var(--accent); font-size: 11px; font-weight: 850; }
.studio-benefits strong { font-size: 14px; }
.studio-benefits p { color: var(--muted); font-size: 12px; line-height: 1.55; margin-top: 5px; }

.premium-landing { min-height: calc(100vh - 72px); }
.premium-landing .hero-copy { gap: 20px; }
.premium-landing .hero-tagline { font-size: clamp(17px, 1.8vw, 21px); max-width: 660px; }
.landing-cta { gap: 35px; min-height: 54px; padding: 13px 18px; }
.landing-cta b { font-size: 20px; }
.cta-note { color: var(--muted); font-size: 12px; }
.showcase-card { background: linear-gradient(145deg, rgba(21,28,43,.95), rgba(10,14,22,.94)); border: 1px solid var(--line); border-radius: 28px; box-shadow: 0 35px 100px rgba(0,0,0,.4); overflow: hidden; padding: 18px; transform: perspective(1200px) rotateY(-4deg) rotateX(2deg); }
.showcase-top { color: var(--muted); display: flex; font-size: 11px; justify-content: space-between; padding: 3px 5px 15px; }
.showcase-top strong { color: var(--accent); }
.showcase-visual { aspect-ratio: 1.25; background: #0b1019; border-radius: 19px; display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; position: relative; }
.pixel-field { position: relative; }
.pixel-field::before { background: radial-gradient(circle at 62% 35%, #8b9cff 0 5%, transparent 6%), radial-gradient(circle at 48% 48%, #4bc9ae, #354274 35%, #111827 68%); content: ""; inset: 0; position: absolute; }
.pixel-field.is-before::before { filter: blur(4px) saturate(.7); transform: scale(1.04); }
.pixel-field.is-after { border-left: 1px solid rgba(255,255,255,.85); }
.pixel-field.is-after::after { background-image: linear-gradient(rgba(255,255,255,.1) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.1) 1px, transparent 1px); background-size: 18px 18px; content: ""; inset: 0; opacity: .24; position: absolute; }
.showcase-visual > i { align-items: center; background: white; border-radius: 50%; color: #0a1018; display: flex; font-style: normal; height: 54px; justify-content: center; left: 50%; position: absolute; top: 50%; transform: translate(-50%,-50%); width: 54px; z-index: 2; }
.showcase-stats { align-items: center; display: grid; gap: 10px; grid-template-columns: 1fr auto 1fr; padding: 17px 6px 3px; }
.showcase-stats span { display: grid; gap: 3px; }
.showcase-stats span:last-child { text-align: right; }
.showcase-stats small { color: var(--muted); font-size: 10px; }
.showcase-stats b { font-size: 13px; }
.showcase-stats em { color: var(--accent); font-style: normal; }
.landing-features .feature-grid article { border-radius: 18px; }

@media (max-width: 1040px) {
  .studio-hero { grid-template-columns: 1fr; }
  .engine-orb-card { max-width: 560px; }
  .studio-workbench { grid-template-columns: 1fr; }
  .studio-dropzone { min-height: 320px; }
}

@media (max-width: 700px) {
  .site-header { align-items: center; display: flex; }
  .site-header .nav a:not(.button), .site-header .nav > .button { display: none; }
  .studio-app { padding-top: 35px; }
  .studio-hero { min-height: 0; }
  .studio-hero h1, .premium-landing h1 { font-size: clamp(43px, 13vw, 66px); }
  .engine-orb-card { grid-template-columns: 86px 1fr; padding: 16px; }
  .engine-orb { border-radius: 25px; height: 86px; }
  .engine-orb span { font-size: 25px; }
  .flow-rail { font-size: 0; }
  .flow-rail span { justify-content: center; }
  .studio-panel { border-radius: 19px; padding: 18px; }
  .studio-dropzone { min-height: 285px; padding: 22px 14px; }
  .scale-lever { gap: 3px; }
  .scale-lever span { min-height: 59px; }
  .scale-lever b { font-size: 16px; }
  .quality-grid, .premium-details .simple-presets { grid-template-columns: 1fr; }
  .quality-option > span { min-height: 125px; }
  .result-summary { align-items: stretch; flex-direction: column; }
  .studio-benefits { grid-template-columns: 1fr; }
  .premium-landing { padding-top: 50px; }
  .showcase-card { transform: none; }
  .trust-row { gap: 10px 16px; }
  .footer { align-items: start; display: grid; }
}

/* Simple one-page upload flow */
.onepage-app {
  display: grid;
  gap: 20px;
  margin: 0 auto;
  max-width: 790px;
  min-height: calc(100vh - 160px);
  padding: clamp(30px, 5vh, 54px) 18px 64px;
}

.onepage-intro {
  display: grid;
  gap: 8px;
  justify-items: center;
  text-align: center;
}

.onepage-intro h1 {
  font-size: clamp(36px, 6vw, 58px);
  letter-spacing: -.045em;
  line-height: 1;
  margin-top: 5px;
}

.onepage-intro > p {
  color: var(--muted);
  font-size: 17px;
}

.onepage-card,
.onepage-result {
  background: linear-gradient(145deg, rgba(18,24,36,.94), rgba(10,14,22,.96));
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 30px 90px rgba(0,0,0,.34), inset 0 1px rgba(255,255,255,.04);
  display: grid;
  gap: 18px;
  padding: clamp(18px, 3vw, 26px);
}

.onepage-dropzone {
  border-radius: 18px;
  gap: 11px;
  min-height: 205px;
  padding: 24px;
}

.onepage-dropzone .upload-glyph {
  border-radius: 15px;
  height: 58px;
  width: 58px;
}

.onepage-dropzone .upload-glyph svg {
  height: 27px;
  width: 27px;
}

.onepage-dropzone strong { font-size: 21px; }
.onepage-dropzone span { font-size: 14px; }
.onepage-dropzone small { color: #717c8d; display: block; font-size: 10px; margin-top: 7px; }

.onepage-files:has(.validation-grid:empty) { display: none; }
.onepage-files .validation-head { margin-bottom: 9px; }
.onepage-files .validation-head span { color: var(--muted); font-size: 12px; }
.onepage-files .validation-card { grid-template-columns: 58px minmax(0,1fr); padding: 9px; }
.onepage-files .validation-card img { width: 58px; }

.onepage-scale {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
  padding-top: 17px;
}

.simple-heading {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.simple-heading span { color: var(--muted); font-size: 11px; }
.onepage-scale .scale-lever { grid-template-columns: repeat(3, 1fr); }
.onepage-scale .scale-lever span { min-height: 61px; }
.onepage-scale .scale-summary { margin-top: 0; }

.onepage-format {
  align-items: center;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(150px, .55fr) minmax(280px, 1fr);
  padding-top: 15px;
}

.onepage-format .simple-heading {
  align-items: flex-start;
  display: grid;
  gap: 3px;
}

.format-lever {
  background: rgba(5,8,13,.48);
  border-radius: 13px;
  display: grid;
  gap: 5px;
  grid-template-columns: repeat(2, 1fr);
  padding: 5px;
}

.format-lever label { display: block; }
.format-lever input { height: 1px; opacity: 0; position: absolute; width: 1px; }
.format-lever span { align-items: center; border: 0; border-radius: 9px; display: flex; gap: 8px; justify-content: center; min-height: 46px; padding: 7px; width: 100%; }
.format-lever b { font-size: 14px; }
.format-lever small { color: var(--muted); font-size: 9px; }
.format-lever input:checked + span { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #071018; }
.format-lever input:checked + span small { color: rgba(7,16,24,.65); }

.onepage-submit {
  display: grid;
  gap: 10px;
}

.onepage-submit .big-action {
  border-radius: 14px;
  display: flex;
  justify-content: space-between;
  min-height: 55px;
  padding: 13px 18px;
  width: 100%;
}

.onepage-submit .big-action b { font-size: 20px; }
.onepage-submit .big-action:disabled { cursor: not-allowed; filter: grayscale(.8); opacity: .5; transform: none; }
.onepage-submit small { color: #697587; font-size: 10px; text-align: center; }

.onepage-app.has-results .onepage-intro,
.onepage-app.has-results .onepage-card { display: none; }

.onepage-app.has-results {
  align-content: center;
  max-width: 880px;
}

.onepage-result { gap: 16px; }
.result-ready,
.result-ready > div,
.result-actions {
  align-items: center;
  display: flex;
  gap: 12px;
}

.result-ready { justify-content: space-between; }
.result-ready p { color: var(--muted); font-size: 13px; margin-top: 2px; }
.done-mark { align-items: center; background: rgba(124,245,213,.12); border: 1px solid rgba(124,245,213,.35); border-radius: 50%; color: var(--accent); display: inline-flex; font-size: 20px; height: 44px; justify-content: center; width: 44px; }

.simple-download-card {
  align-items: center;
  background: rgba(255,255,255,.025);
  border: 1px solid var(--line);
  border-radius: 16px;
  display: grid;
  gap: 15px;
  grid-template-columns: 82px minmax(0,1fr) auto;
  padding: 12px;
}

.result-thumb { background: var(--bg-soft); border-radius: 11px; height: 72px; overflow: hidden; width: 82px; }
.result-thumb img { height: 100%; object-fit: cover; width: 100%; }
.download-info { display: grid; gap: 4px; min-width: 0; }
.download-info strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.download-info span,
.download-info small { color: var(--muted); font-size: 12px; }

@media (min-width: 900px) and (min-height: 850px) {
  .onepage-app:not(.has-results) { align-content: center; padding-bottom: 80px; }
}

@media (max-width: 600px) {
  .onepage-app { padding-top: 25px; }
  .onepage-intro h1 { font-size: 39px; }
  .onepage-intro > p { font-size: 14px; }
  .onepage-card, .onepage-result { border-radius: 19px; padding: 15px; }
  .onepage-dropzone { min-height: 190px; }
  .onepage-scale .scale-lever b { font-size: 18px; }
  .onepage-scale .scale-summary { align-items: flex-start; }
  .onepage-format { grid-template-columns: 1fr; }
  .result-ready { align-items: flex-start; flex-direction: column; }
  .result-actions { width: 100%; }
  .simple-download-card { align-items: stretch; grid-template-columns: 64px minmax(0,1fr); }
  .result-thumb { height: 64px; width: 64px; }
  .simple-download-card .download-action { grid-column: 1 / -1; width: 100%; }
}

/* Full-width, no-scroll desktop workspace */
body:has(.onepage-app) .footer { display: none; }

.onepage-app {
  align-content: stretch;
  gap: 16px;
  grid-template-rows: auto minmax(0, 1fr);
  height: calc(100svh - 75px);
  max-width: 1380px;
  min-height: 0;
  overflow: hidden;
  padding: 20px clamp(24px, 4vw, 64px) 24px;
}

.onepage-intro {
  align-items: end;
  display: flex;
  justify-content: space-between;
  text-align: left;
}

.onepage-intro > div { display: grid; gap: 7px; }
.onepage-intro h1 { font-size: clamp(34px, 4vw, 52px); margin: 0; }
.onepage-intro > p { font-size: 15px; padding-bottom: 4px; }

.onepage-card {
  align-items: stretch;
  display: grid;
  gap: 0;
  grid-template-columns: minmax(0, 1.22fr) minmax(380px, .78fr);
  min-height: 0;
  overflow: hidden;
  padding: 0;
}

.onepage-upload-column {
  display: grid;
  min-height: 0;
  padding: 22px;
}

.onepage-dropzone {
  height: 100%;
  min-height: 0;
}

.onepage-card.has-files .onepage-dropzone { display: none; }
.onepage-files { display: grid; grid-template-rows: auto minmax(0,1fr); min-height: 0; }
.onepage-files:has(.validation-grid:empty) { display: none; }
.onepage-files .validation-head { align-items: center; margin: 0 0 12px; }
.onepage-files .validation-head > div { display: grid; gap: 2px; }
.change-image { font-size: 11px; min-height: 36px; padding: 7px 11px; }

.onepage-files .validation-grid { height: 100%; min-height: 0; }
.onepage-files .validation-card {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
  grid-template-rows: minmax(0,1fr) auto;
  height: 100%;
  min-height: 0;
  overflow: hidden;
  padding: 12px;
}

.onepage-files .validation-card > img {
  background: rgba(0,0,0,.18);
  height: 100%;
  max-height: 100%;
  object-fit: contain;
  width: 100%;
}

.onepage-files .validation-card > div {
  display: grid;
  gap: 2px;
  grid-template-columns: minmax(0,1fr) auto;
}

.onepage-files .validation-card strong,
.onepage-files .validation-card span { grid-column: 1 / -1; }
.onepage-files .validation-card small { margin-right: 14px; }

.onepage-controls-column {
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: clamp(20px, 2.4vw, 30px);
}

.controls-heading { display: grid; gap: 5px; }
.controls-heading > span { color: var(--accent); font-size: 10px; font-weight: 850; letter-spacing: .13em; }
.controls-heading h2 { font-size: clamp(23px, 2vw, 29px); }
.controls-heading p { color: var(--muted); font-size: 12px; }
.onepage-controls-column .onepage-scale { margin-top: 20px; }
.onepage-controls-column .onepage-format { grid-template-columns: 1fr; }
.onepage-controls-column .onepage-format .simple-heading { align-items: center; display: flex; }
.onepage-controls-column .onepage-submit { margin-top: auto; padding-top: 18px; }

.onepage-app.has-results { display: block; height: calc(100svh - 75px); max-width: 1240px; padding: 24px clamp(24px,4vw,64px); }
.onepage-result { height: 100%; min-height: 0; overflow: hidden; }
.onepage-result .simple-download-card { grid-template-columns: minmax(0,1.35fr) minmax(300px,.65fr); min-height: 0; }
.onepage-result .result-thumb { height: 100%; min-height: 0; width: 100%; }
.onepage-result .result-thumb img { object-fit: contain; }
.onepage-result .download-info { align-content: center; gap: 8px; padding: 18px; }
.onepage-result .download-info strong { font-size: 22px; }
.onepage-result .download-info .download-action { margin-top: 12px; width: 100%; }
.ready-label { color: var(--accent) !important; font-size: 10px !important; font-weight: 850; letter-spacing: .12em; }

@media (max-width: 900px) {
  .onepage-app,
  .onepage-app.has-results { height: auto; min-height: calc(100svh - 72px); overflow: visible; padding: 26px 16px 38px; }
  .onepage-intro { align-items: center; display: grid; justify-items: center; text-align: center; }
  .onepage-intro > div { justify-items: center; }
  .onepage-card { grid-template-columns: 1fr; overflow: visible; }
  .onepage-upload-column { min-height: 340px; padding: 15px; }
  .onepage-controls-column { border-left: 0; border-top: 1px solid var(--line); padding: 18px; }
  .onepage-controls-column .onepage-submit { margin-top: 0; }
  .onepage-files .validation-card > img { max-height: 420px; }
  .onepage-result { height: auto; overflow: visible; }
  .onepage-result .simple-download-card { grid-template-columns: 1fr; }
  .onepage-result .result-thumb { height: min(55svh, 480px); }
}

@media (max-width: 600px) {
  .onepage-intro h1 { font-size: 38px; }
  .onepage-upload-column { min-height: 300px; }
  .onepage-files .validation-card > div { grid-template-columns: 1fr; }
  .onepage-result .download-info { padding: 8px 2px 2px; }
}