html,
body {
  width: 100%;
  max-width: 100%;
  min-height: 100%;
  overflow-x: hidden;
  overflow-x: clip;
}

html {
  background: var(--color-bg);
}

body {
  background:
    radial-gradient(circle at 76% 8%, rgba(124, 58, 237, 0.08), transparent 28%),
    var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
}

body,
main,
header,
section,
aside,
article,
form,
fieldset,
div,
figure {
  min-width: 0;
}

::selection {
  background: rgba(168, 85, 247, 0.36);
  color: #fff;
}

svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  background: #fff;
  color: var(--color-bg);
  font-size: 12px;
  font-weight: 700;
  transform: translateY(-170%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid var(--color-purple-light);
  outline-offset: 3px;
}

/* Product identity now lives inside the tool instead of a navbar. */
.tool-brand {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  align-items: center;
  gap: 11px;
  margin-bottom: 18px;
}

.tool-brand__mark {
  position: relative;
  display: grid;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  overflow: hidden;
  place-items: center;
  border: 1px solid rgba(192, 132, 252, 0.34);
  border-radius: 13px;
  background: var(--gradient-accent);
  box-shadow: 0 9px 24px rgba(124, 58, 237, 0.25);
}

.tool-brand__mark::after {
  position: absolute;
  inset: 1px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 11px;
  content: "";
  pointer-events: none;
}

.tool-brand__mark img {
  width: 68px;
  max-width: none;
  height: 68px;
  object-fit: contain;
}

.tool-brand__copy {
  display: grid;
  line-height: 1.15;
}

.tool-brand__copy strong {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.tool-brand__copy span {
  margin-top: 4px;
  color: var(--color-muted-dark);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.creator-credit {
  display: grid;
  width: 100%;
  min-width: 0;
  min-height: 58px;
  margin-top: -6px;
  padding: 9px 11px;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  color: var(--color-muted);
  transition: color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition);
}

.creator-credit:hover {
  border-color: var(--color-purple-border);
  background: rgba(168, 85, 247, 0.06);
  color: var(--color-text);
  transform: translateY(-1px);
}

.creator-credit__copy {
  display: grid;
  line-height: 1.25;
}

.creator-credit__copy strong:first-child {
  color: var(--color-muted);
  font-size: 11px;
  font-weight: 600;
}

.creator-credit__copy strong:last-child {
  margin-top: 2px;
  color: var(--color-text);
  font-size: 13px;
  font-weight: 750;
}

.creator-credit__logo {
  display: grid;
  width: 88px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  overflow: hidden;
  border-radius: 8px;
  background: #fff;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.creator-credit__logo img {
  width: 78px;
  height: auto;
  object-fit: contain;
}

.creator-credit > svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  color: var(--color-purple-light);
}

.install-button {
  display: inline-flex;
  width: 100%;
  min-height: 42px;
  margin-top: -8px;
  padding: 9px 13px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--color-purple-border);
  border-radius: var(--radius-pill);
  background: var(--color-purple-soft);
  color: var(--color-purple-light);
  font-size: 12px;
  font-weight: 700;
  transition: border-color var(--transition), background var(--transition), color var(--transition), transform var(--transition);
}

.install-button:hover {
  border-color: var(--color-purple-light);
  background: rgba(168, 85, 247, 0.2);
  color: #fff;
  transform: translateY(-1px);
}

.install-button svg {
  width: 16px;
  height: 16px;
}

/* Full-width application workspace. */
.app-workspace {
  position: relative;
  width: 100%;
  max-width: 100%;
}

.control-panel {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 26px 16px 24px;
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(150deg, rgba(22, 22, 29, 0.98), rgba(13, 13, 19, 0.99)),
    var(--color-surface);
}

.tool-intro {
  padding-bottom: 23px;
  border-bottom: 1px solid var(--color-border);
}

.tool-intro__eyebrow,
.step-label {
  color: var(--color-purple-light);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.tool-intro__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border: 1px solid var(--color-purple-border);
  border-radius: var(--radius-pill);
  background: var(--color-purple-soft);
}

.tool-intro__eyebrow svg {
  width: 13px;
  height: 13px;
}

.tool-intro h1 {
  margin-top: 15px;
  font-size: clamp(25px, 7.5vw, 34px);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.tool-intro h1 span {
  color: transparent;
  background: linear-gradient(100deg, #c084fc, #a855f7 48%, #7c3aed);
  background-clip: text;
  -webkit-background-clip: text;
}

.tool-intro p {
  max-width: 390px;
  margin-top: 11px;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.6;
}

.panel-heading,
.results-header,
.setting-heading,
.selection-bar,
.progress-panel__heading,
.result-card__header,
.result-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 13px;
}

.panel-heading {
  margin-top: 22px;
}

.panel-heading h2,
.results-header h2 {
  margin-top: 1px;
  color: var(--color-text);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.format-badge {
  padding: 5px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-muted-dark);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* File drop area. */
.drop-zone {
  position: relative;
  display: grid;
  width: 100%;
  min-height: 106px;
  margin-top: 15px;
  padding: 15px;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  border: 1px dashed rgba(168, 85, 247, 0.46);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.075), rgba(168, 85, 247, 0.015));
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.drop-zone:hover,
.drop-zone.is-dragging {
  border-color: var(--color-purple-light);
  background: rgba(168, 85, 247, 0.11);
  box-shadow: inset 0 0 32px rgba(168, 85, 247, 0.04);
  transform: translateY(-1px);
}

.drop-zone__icon {
  display: grid;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--color-purple-border);
  border-radius: 14px;
  background: var(--color-purple-soft);
  color: var(--color-purple-light);
}

.drop-zone__icon svg {
  width: 21px;
  height: 21px;
}

.drop-zone__copy {
  overflow: hidden;
}

.drop-zone__title {
  overflow: hidden;
  color: var(--color-text-soft);
  font-size: 14px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.drop-zone__subtitle {
  margin-top: 1px;
  color: var(--color-muted-dark);
  font-size: 11px;
  line-height: 1.4;
}

.drop-zone__button {
  padding: 7px 10px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.selection-bar {
  margin-top: 9px;
  padding: 8px 11px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
}

.selection-bar__count,
.selection-bar__size {
  display: block;
  line-height: 1.3;
}

.selection-bar__count {
  color: var(--color-text-soft);
  font-size: 12px;
  font-weight: 700;
}

.selection-bar__size {
  color: var(--color-muted-dark);
  font-size: 10px;
}

.text-button {
  padding: 5px;
  background: transparent;
  color: var(--color-muted);
  font-size: 11px;
  font-weight: 600;
  transition: color var(--transition);
}

.text-button:hover {
  color: var(--color-red);
}

/* Settings. */
.settings {
  display: grid;
  margin-top: 20px;
  gap: 18px;
}

.setting-group {
  display: grid;
  gap: 10px;
}

.setting-heading {
  align-items: flex-start;
}

.setting-heading label,
.field-label,
.setting-group legend {
  color: var(--color-text-soft);
  font-size: 13px;
  font-weight: 700;
}

.setting-heading p {
  margin-top: 1px;
  color: var(--color-muted-dark);
  font-size: 10px;
  line-height: 1.45;
}

.quality-output {
  min-width: 44px;
  padding: 4px 7px;
  border: 1px solid var(--color-purple-border);
  border-radius: 7px;
  background: var(--color-purple-soft);
  color: var(--color-purple-light);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
}

.range-input {
  width: 100%;
  height: 5px;
  border-radius: var(--radius-pill);
  appearance: none;
  background: linear-gradient(to right, var(--color-purple) var(--range-progress, 80%), rgba(255, 255, 255, 0.1) var(--range-progress, 80%));
  cursor: pointer;
}

.range-input::-webkit-slider-thumb {
  width: 17px;
  height: 17px;
  border: 3px solid var(--color-surface);
  border-radius: 50%;
  appearance: none;
  background: var(--color-purple-light);
  box-shadow: 0 0 0 1px var(--color-purple), 0 3px 10px rgba(168, 85, 247, 0.28);
}

.range-input::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border: 3px solid var(--color-surface);
  border-radius: 50%;
  background: var(--color-purple-light);
}

.range-labels {
  display: flex;
  justify-content: space-between;
  color: var(--color-muted-dark);
  font-size: 10px;
}

.switch {
  position: relative;
  flex: 0 0 auto;
  cursor: pointer;
}

.switch input {
  position: absolute;
  opacity: 0;
}

.switch__track {
  position: relative;
  display: block;
  width: 36px;
  height: 20px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.12);
  transition: background var(--transition);
}

.switch__track::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-muted);
  content: "";
  transition: transform var(--transition), background var(--transition);
}

.switch input:checked + .switch__track {
  background: var(--color-purple-deep);
}

.switch input:checked + .switch__track::after {
  background: #fff;
  transform: translateX(16px);
}

.switch input:focus-visible + .switch__track {
  outline: 2px solid var(--color-purple-light);
  outline-offset: 3px;
}

.dimension-fields {
  display: grid;
  width: 100%;
  grid-template-columns: minmax(0, 1fr) 19px minmax(0, 1fr);
  align-items: end;
  gap: 6px;
  transition: opacity var(--transition);
}

.dimension-fields.is-disabled {
  opacity: 0.4;
}

.dimension-fields > label {
  display: grid;
  min-width: 0;
  gap: 4px;
  color: var(--color-muted);
  font-size: 10px;
  font-weight: 600;
}

.input-with-unit {
  display: flex;
  width: 100%;
  min-width: 0;
  height: 37px;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.025);
  transition: border-color var(--transition), background var(--transition);
}

.input-with-unit:focus-within {
  border-color: var(--color-purple);
  background: rgba(168, 85, 247, 0.04);
}

.input-with-unit input {
  width: 100%;
  min-width: 0;
  height: 100%;
  border: 0;
  outline: 0;
  padding: 0 3px 0 9px;
  background: transparent;
  color: var(--color-text-soft);
  font-size: 13px;
  font-weight: 600;
  -moz-appearance: textfield;
}

.input-with-unit input::-webkit-inner-spin-button,
.input-with-unit input::-webkit-outer-spin-button {
  margin: 0;
  appearance: none;
}

.input-with-unit > span {
  padding-right: 8px;
  color: var(--color-muted-dark);
  font-size: 10px;
}

.dimension-link {
  display: grid;
  width: 19px;
  height: 37px;
  place-items: center;
  color: var(--color-muted-dark);
}

.dimension-link svg {
  width: 11px;
  height: 11px;
}

.format-options {
  display: grid;
  width: 100%;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 5px;
}

.format-options label {
  min-width: 0;
  cursor: pointer;
}

.format-options input {
  position: absolute;
  opacity: 0;
}

.format-options span {
  display: grid;
  min-height: 33px;
  padding-inline: 4px;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.02);
  color: var(--color-muted);
  font-size: 11px;
  font-weight: 700;
  transition: color var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.format-options label:hover span {
  border-color: var(--color-purple-border);
  color: var(--color-text-soft);
}

.format-options input:checked + span {
  border-color: transparent;
  background: var(--gradient-accent);
  box-shadow: 0 7px 17px rgba(124, 58, 237, 0.18);
  color: #fff;
}

.format-options input:focus-visible + span {
  outline: 2px solid var(--color-purple-light);
  outline-offset: 3px;
}

.primary-button,
.secondary-button,
.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  font-weight: 700;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), opacity var(--transition);
}

.primary-button {
  width: 100%;
  min-height: 47px;
  gap: 9px;
  padding: 10px 16px;
  background: var(--gradient-accent);
  box-shadow: var(--shadow-purple);
  color: #fff;
  font-size: 14px;
}

.primary-button:hover:not(:disabled),
.secondary-button:hover:not(:disabled),
.download-button:hover {
  transform: translateY(-1px);
}

.primary-button:hover:not(:disabled) {
  background: var(--gradient-accent-hover);
  box-shadow: 0 16px 38px rgba(124, 58, 237, 0.31);
}

.primary-button:disabled,
.secondary-button:disabled {
  cursor: not-allowed;
  opacity: 0.4;
  box-shadow: none;
}

.button-icon,
.button-arrow {
  width: 16px;
  height: 16px;
}

.button-icon {
  display: grid;
  place-items: center;
}

.button-icon svg {
  width: 15px;
  height: 15px;
}

.button-arrow {
  margin-left: auto;
}

.privacy-note {
  display: flex;
  margin-top: 18px;
  padding: 10px 11px;
  align-items: flex-start;
  gap: 9px;
  border: 1px solid rgba(74, 222, 128, 0.12);
  border-radius: var(--radius-md);
  background: rgba(74, 222, 128, 0.035);
}

.privacy-note svg {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  margin-top: 1px;
  color: var(--color-green);
}

.privacy-note p {
  color: var(--color-muted-dark);
  font-size: 11px;
  line-height: 1.5;
}

.privacy-note strong {
  color: var(--color-text-soft);
}

/* Results workspace. */
.results-panel {
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: 620px;
  overflow: hidden;
  padding: 26px 16px 34px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.008), rgba(255, 255, 255, 0)),
    #0d0d12;
}

.results-glow {
  position: absolute;
  z-index: -1;
  top: -180px;
  right: -140px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(124, 58, 237, 0.08);
  filter: blur(100px);
  pointer-events: none;
}

.results-header {
  align-items: flex-start;
  flex-direction: column;
  padding-bottom: 17px;
  border-bottom: 1px solid var(--color-border);
}

.results-heading p {
  margin-top: 4px;
  color: var(--color-muted-dark);
  font-size: 12px;
}

.secondary-button {
  width: 100%;
  min-height: 38px;
  padding: 8px 13px;
  gap: 7px;
  border: 1px solid var(--color-border-strong);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-soft);
  font-size: 12px;
}

.secondary-button svg,
.download-button svg {
  width: 14px;
  height: 14px;
}

.workspace-chips {
  display: flex;
  width: 100%;
  margin-top: 13px;
  flex-wrap: wrap;
  gap: 6px;
}

.workspace-chips span {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 5px;
  padding: 5px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.018);
  color: var(--color-muted-dark);
  font-size: 10px;
  font-weight: 600;
  white-space: nowrap;
}

.workspace-chips svg {
  width: 10px;
  height: 10px;
  color: var(--color-purple-light);
  stroke-width: 2.4;
}

.progress-panel {
  margin-top: 14px;
  padding: 12px;
  border: 1px solid var(--color-purple-border);
  border-radius: var(--radius-md);
  background: rgba(168, 85, 247, 0.06);
}

.progress-panel__heading {
  color: var(--color-text-soft);
  font-size: 12px;
  font-weight: 600;
}

#progress-value {
  color: var(--color-purple-light);
  font-variant-numeric: tabular-nums;
}

.progress-track {
  height: 5px;
  margin-top: 8px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.08);
}

.progress-bar {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--gradient-accent);
  transition: width 240ms ease;
}

.progress-panel p {
  overflow: hidden;
  margin-top: 6px;
  color: var(--color-muted-dark);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.batch-summary {
  display: grid;
  width: 100%;
  margin-top: 14px;
  padding: 12px;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 9px 11px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
}

.summary-icon {
  display: grid;
  width: 32px;
  height: 32px;
  grid-row: span 2;
  place-items: center;
  border-radius: 9px;
  background: rgba(74, 222, 128, 0.1);
  color: var(--color-green);
}

.summary-icon svg {
  width: 16px;
  height: 16px;
  stroke-width: 2.5;
}

.summary-copy,
.summary-stat {
  display: grid;
}

.summary-copy span,
.summary-stat span {
  color: var(--color-muted-dark);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.summary-copy strong,
.summary-stat strong {
  overflow: hidden;
  color: var(--color-text-soft);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.summary-stat {
  padding-left: 43px;
}

.accent-text {
  color: var(--color-purple-light) !important;
}

.empty-state {
  display: flex;
  width: 100%;
  min-height: 440px;
  padding: 40px 10px;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.empty-state__visual {
  position: relative;
  display: grid;
  width: min(158px, 56vw);
  aspect-ratio: 1;
  place-items: center;
}

.empty-orbit {
  position: absolute;
  border: 1px solid rgba(168, 85, 247, 0.14);
  border-radius: 50%;
}

.empty-orbit--outer {
  inset: 0;
}

.empty-orbit--inner {
  inset: 23px;
  border-style: dashed;
  animation: orbit 24s linear infinite;
}

.empty-icon {
  display: grid;
  width: 62px;
  height: 62px;
  place-items: center;
  border: 1px solid var(--color-purple-border);
  border-radius: 19px;
  background: linear-gradient(145deg, rgba(168, 85, 247, 0.18), rgba(124, 58, 237, 0.06));
  box-shadow: 0 18px 46px rgba(124, 58, 237, 0.16);
  color: var(--color-purple-light);
  transform: rotate(-4deg);
}

.empty-icon svg {
  width: 28px;
  height: 28px;
}

.spark {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 2px;
  background: var(--color-purple);
  box-shadow: 0 0 12px var(--color-purple);
  transform: rotate(45deg);
}

.spark--one { top: 24px; right: 18px; }
.spark--two { bottom: 31px; left: 14px; width: 4px; height: 4px; opacity: 0.55; }
.spark--three { top: 46px; left: 25px; width: 3px; height: 3px; opacity: 0.4; }

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

.empty-state h3 {
  margin-top: 20px;
  font-size: 20px;
  font-weight: 700;
}

.empty-state > p {
  max-width: 430px;
  margin-top: 6px;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.65;
}

.empty-state__hint {
  display: flex;
  max-width: 100%;
  margin-top: 16px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px;
  color: var(--color-muted-dark);
  font-size: 10px;
}

.empty-state__hint kbd {
  min-width: 21px;
  padding: 2px 5px;
  border: 1px solid var(--color-border-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.045);
  color: var(--color-muted);
  font-family: inherit;
  font-size: 10px;
}

.empty-state__hint span:last-child {
  margin-left: 4px;
}

/* Generated result cards. */
.results-list {
  display: grid;
  width: 100%;
  margin-top: 15px;
  gap: 13px;
}

/* Visible supporting content helps users and search engines understand the tool. */
.seo-content {
  width: 100%;
  margin-top: 28px;
  padding: 25px 0 4px;
  border-top: 1px solid var(--color-border);
}

.seo-content__heading {
  max-width: 760px;
}

.seo-content__heading h2 {
  margin-top: 4px;
  font-size: clamp(21px, 3vw, 28px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.seo-content__heading p {
  margin-top: 9px;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.7;
}

.seo-content__grid {
  display: grid;
  margin-top: 18px;
  gap: 10px;
}

.seo-content__grid article {
  padding: 17px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.018);
}

.seo-content__grid h3 {
  color: var(--color-text-soft);
  font-size: 14px;
  font-weight: 700;
}

.seo-content__grid p {
  margin-top: 6px;
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.65;
}

.result-card {
  width: 100%;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(22, 22, 29, 0.82);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.result-card:hover {
  border-color: rgba(168, 85, 247, 0.22);
  box-shadow: 0 15px 36px rgba(0, 0, 0, 0.17);
  transform: translateY(-1px);
}

.result-card.is-processing { border-color: var(--color-purple-border); }
.result-card.is-error { border-color: rgba(251, 113, 133, 0.3); }

.result-card__header {
  padding: 11px 12px;
  border-bottom: 1px solid var(--color-border);
}

.file-identity {
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
  align-items: center;
  gap: 9px;
  overflow: hidden;
}

.file-icon {
  display: grid;
  width: 31px;
  height: 31px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 9px;
  background: var(--color-purple-soft);
  color: var(--color-purple-light);
}

.file-icon svg {
  width: 16px;
  height: 16px;
}

.file-identity > div {
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
}

.file-identity h3 {
  overflow: hidden;
  width: 100%;
  color: var(--color-text-soft);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-identity p {
  color: var(--color-muted-dark);
  font-size: 10px;
  text-transform: uppercase;
}

.icon-button {
  display: grid;
  width: 29px;
  height: 29px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: var(--color-muted-dark);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.icon-button:hover {
  border-color: var(--color-border);
  background: rgba(251, 113, 133, 0.07);
  color: var(--color-red);
}

.icon-button svg {
  width: 13px;
  height: 13px;
}

.comparison {
  display: grid;
  width: 100%;
  padding: 11px;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}

.preview {
  width: 100%;
  min-width: 0;
}

.preview__image-wrap {
  position: relative;
  width: 100%;
  height: 156px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background:
    linear-gradient(45deg, #17171f 25%, transparent 25%),
    linear-gradient(-45deg, #17171f 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #17171f 75%),
    linear-gradient(-45deg, transparent 75%, #17171f 75%),
    #111117;
  background-position: 0 0, 0 6px, 6px -6px, -6px 0;
  background-size: 12px 12px;
}

.preview__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.preview__label {
  position: absolute;
  top: 7px;
  left: 7px;
  padding: 3px 6px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius-pill);
  background: rgba(10, 10, 15, 0.74);
  color: var(--color-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
}

.preview__label--accent {
  border-color: var(--color-purple-border);
  background: rgba(76, 29, 149, 0.72);
  color: #e9d5ff;
}

.preview figcaption {
  display: flex;
  min-width: 0;
  padding: 6px 2px 0;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.preview figcaption strong,
.preview figcaption span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview figcaption strong {
  color: var(--color-text-soft);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.preview figcaption span {
  color: var(--color-muted-dark);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

.preview-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  background: rgba(12, 12, 17, 0.8);
  color: var(--color-muted-dark);
  font-size: 10px;
}

.mini-spinner {
  width: 19px;
  height: 19px;
  border: 2px solid rgba(168, 85, 247, 0.15);
  border-top-color: var(--color-purple);
  border-radius: 50%;
  animation: spin 900ms linear infinite;
  animation-play-state: paused;
}

.is-processing .mini-spinner { animation-play-state: running; }

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

.comparison-arrow {
  display: none;
  width: 23px;
  height: 23px;
  place-items: center;
  align-self: center;
  border: 1px solid var(--color-purple-border);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-purple-light);
}

.comparison-arrow svg {
  width: 11px;
  height: 11px;
}

.result-card__footer {
  min-height: 48px;
  padding: 8px 11px;
  border-top: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.012);
}

.saving-badge {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 4px;
  padding: 4px 7px;
  border: 1px solid rgba(74, 222, 128, 0.15);
  border-radius: var(--radius-pill);
  background: rgba(74, 222, 128, 0.07);
  color: var(--color-green);
  font-size: 10px;
  font-weight: 700;
}

.saving-badge.is-larger {
  border-color: rgba(251, 113, 133, 0.18);
  background: rgba(251, 113, 133, 0.07);
  color: var(--color-red);
}

.saving-badge svg {
  width: 10px;
  height: 10px;
}

.file-status {
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
  color: var(--color-muted-dark);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-status.is-error { color: var(--color-red); }

.download-button {
  min-height: 30px;
  flex: 0 0 auto;
  padding: 6px 10px;
  gap: 5px;
  background: var(--gradient-accent);
  box-shadow: 0 7px 17px rgba(124, 58, 237, 0.17);
  color: #fff;
  font-size: 10px;
}

/* Notifications. */
.toast {
  position: fixed;
  z-index: 100;
  right: 14px;
  bottom: 14px;
  left: 14px;
  display: flex;
  max-width: 420px;
  min-height: 48px;
  padding: 9px 13px;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: rgba(24, 24, 32, 0.95);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
  color: var(--color-text-soft);
  font-size: 12px;
  backdrop-filter: blur(16px);
  animation: toast-in 220ms ease both;
}

.toast__icon {
  display: grid;
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: rgba(74, 222, 128, 0.1);
  color: var(--color-green);
}

.toast__icon svg { width: 12px; height: 12px; }
.toast.is-error .toast__icon { background: rgba(251, 113, 133, 0.1); color: var(--color-red); }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(10px); }
}

@media (max-width: 359px) {
  .tool-brand__copy strong { font-size: 13px; }
  .tool-brand__mark { width: 42px; height: 42px; }
  .creator-credit { gap: 8px; padding-inline: 9px; }
  .creator-credit__logo { width: 72px; }
  .creator-credit__logo img { width: 64px; }
  .format-badge { display: none; }
  .drop-zone { padding: 12px 10px; gap: 8px; }
  .drop-zone__icon { width: 40px; height: 40px; }
  .drop-zone__subtitle { display: none; }
  .result-card__footer { align-items: flex-start; flex-wrap: wrap; }
  .file-status { flex-basis: 100%; order: 3; }
}

@media (min-width: 480px) {
  .control-panel,
  .results-panel {
    padding-inline: 24px;
  }

  .results-header {
    align-items: center;
    flex-direction: row;
  }

  .secondary-button {
    width: auto;
    flex: 0 0 auto;
  }

  .batch-summary {
    grid-template-columns: auto minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
  }

  .summary-icon { grid-row: auto; }
  .summary-stat { padding-left: 11px; border-left: 1px solid var(--color-border); }

  .comparison {
    grid-template-columns: minmax(0, 1fr) 23px minmax(0, 1fr);
    align-items: start;
  }

  .comparison-arrow {
    display: grid;
    margin-top: 65px;
  }

  .preview__image-wrap { height: 164px; }

  .toast {
    right: 22px;
    bottom: 22px;
    left: auto;
  }
}

@media (min-width: 760px) {
  .control-panel,
  .results-panel {
    padding-inline: 34px;
  }

  .control-panel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 0 28px;
  }

  .tool-intro {
    grid-column: 1 / -1;
  }

  .panel-heading,
  .drop-zone,
  .selection-bar {
    grid-column: 1;
  }

  .settings {
    grid-column: 2;
    grid-row: 2 / span 4;
    margin-top: 22px;
  }

  .privacy-note {
    grid-column: 1;
  }

  .results-panel { min-height: 680px; }
  .empty-state { min-height: 500px; }
  .preview__image-wrap { height: 205px; }

  .seo-content__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Desktop workspace: fills exactly the available viewport width and height. */
@media (min-width: 1024px) {
  html,
  body {
    overflow: hidden;
  }

  .app-workspace {
    display: grid;
    height: 100vh;
    height: 100dvh;
    grid-template-columns: 400px minmax(0, 1fr);
    overflow: hidden;
  }

  .control-panel,
  .results-panel {
    height: 100%;
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
    scrollbar-color: rgba(168, 85, 247, 0.38) transparent;
    scrollbar-width: thin;
  }

  .control-panel::-webkit-scrollbar,
  .results-panel::-webkit-scrollbar { width: 7px; }
  .control-panel::-webkit-scrollbar-thumb,
  .results-panel::-webkit-scrollbar-thumb { border-radius: 10px; background: rgba(168, 85, 247, 0.3); }

  .control-panel {
    display: block;
    padding: 24px 25px 22px;
    border-right: 1px solid var(--color-border);
    border-bottom: 0;
  }

  .tool-intro { padding-bottom: 20px; }
  .tool-intro h1 { font-size: 30px; }
  .panel-heading { margin-top: 19px; }
  .drop-zone { min-height: 96px; margin-top: 13px; }
  .settings { margin-top: 17px; gap: 15px; }
  .privacy-note { margin-top: 15px; }

  .results-panel {
    padding: 28px 30px 36px;
  }

  .empty-state {
    min-height: calc(100% - 105px);
  }

  .preview__image-wrap {
    height: clamp(170px, 18vw, 230px);
  }

  .comparison-arrow {
    margin-top: clamp(68px, 8vw, 95px);
  }
}

@media (min-width: 1280px) {
  .app-workspace {
    grid-template-columns: 420px minmax(0, 1fr);
  }

  .control-panel {
    padding-inline: 28px;
  }

  .results-panel {
    padding-inline: 36px;
  }
}

@media (min-width: 1500px) {
  .app-workspace {
    grid-template-columns: 430px minmax(0, 1fr);
  }

  .results-panel {
    padding: 30px 40px 40px;
  }

  .results-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .preview__image-wrap {
    height: clamp(160px, 10vw, 205px);
  }

  .comparison-arrow {
    margin-top: clamp(64px, 4.4vw, 83px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}