:root {
  color-scheme: dark;
  --bg: #081017;
  --panel: #0d1821;
  --panel-raised: #11212b;
  --line: rgba(174, 206, 218, 0.13);
  --line-strong: rgba(174, 206, 218, 0.23);
  --text: #eff8f6;
  --muted: #86a2a5;
  --faint: #577178;
  --accent: #27e6a1;
  --accent-soft: rgba(39, 230, 161, 0.11);
  --danger: #ff7f88;
  --panel-width: 340px;
  --topbar: 68px;
  --footer: 42px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-width: 320px;
  min-height: 100%;
  background: var(--bg);
}

body {
  color: var(--text);
  overflow: hidden;
}

button, input, select {
  font: inherit;
}

button {
  color: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-shell {
  display: grid;
  grid-template-columns: var(--panel-width) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  width: 100%;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  transition: grid-template-columns 260ms ease;
}

/* Keep the panel's contents from wrapping and growing the grid row while it closes. */
.control-panel {
  z-index: 30;
  display: flex;
  flex-direction: column;
  width: var(--panel-width);
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--panel);
  border-right: 1px solid var(--line);
  transition: transform 260ms ease, opacity 180ms ease;
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 25px 22px 20px;
  border-bottom: 1px solid var(--line);
}

.eyebrow, .field-label, .brand-name, .brand-subtitle, legend, .draft-status {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  color: var(--muted);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

h1 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 580;
  letter-spacing: -0.045em;
}

.icon-button, .toolbar-button {
  display: inline-grid;
  place-items: center;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.icon-button svg, .toolbar-button svg, .button svg, .text-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-button {
  color: var(--muted);
}

.icon-button:hover, .toolbar-button:hover, .text-button:hover {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--line-strong);
}

.panel-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 18px 22px 24px;
  scrollbar-color: var(--line-strong) transparent;
}

.url-output-card {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,255,255,0.025);
}

.url-output-header .field-label {
  display: block;
  margin-bottom: 8px;
  color: var(--faint);
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.76rem;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

legend {
  margin-bottom: 15px;
  color: var(--faint);
}

.field-group {
  margin-bottom: 17px;
}

.field-group > label, .toggle-group > div > label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 0.9rem;
  font-weight: 550;
}

.field-hint {
  color: var(--faint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 500;
}

input[type="number"], input[type="text"], select {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  outline: 0;
  color: var(--text);
  background: rgba(0,0,0,0.2);
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

select {
  appearance: none;
  color-scheme: dark;
  padding-right: 36px;
  background-color: var(--bg);
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 17px) 19px, calc(100% - 12px) 19px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

select option {
  color: var(--text);
  background-color: var(--panel);
}

input:focus-visible, select:focus-visible, button:focus-visible, .url-output-card code:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(39,230,161,0.14);
  outline: none;
}

input[type="number"]:hover, input[type="text"]:hover {
  background-color: rgba(255,255,255,0.035);
}

select:hover {
  background-color: var(--panel-raised);
}

.field-error {
  min-height: 0;
  margin: 5px 0 0;
  color: var(--danger);
  font-size: 0.75rem;
  line-height: 1.35;
}

.field-error:not(:empty) {
  min-height: 1em;
}

.is-invalid {
  border-color: rgba(255, 127, 136, 0.7) !important;
}

.field-description {
  margin: 5px 0 0;
  color: var(--faint);
  font-size: 0.74rem;
  line-height: 1.45;
}

.toggle-group, .auto-apply-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.toggle-group > div > label {
  justify-content: flex-start;
  margin-bottom: 0;
}

.switch {
  position: relative;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  cursor: pointer;
}

.switch input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.switch-track {
  position: relative;
  display: block;
  width: 42px;
  height: 24px;
  padding: 3px;
  border: 1px solid var(--line-strong);
  border-radius: 99px;
  background: #14252d;
  transition: background 160ms ease, border-color 160ms ease;
}

.switch-thumb {
  display: block;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--muted);
  transition: transform 160ms ease, background 160ms ease;
}

.switch input:checked + .switch-track {
  border-color: rgba(39,230,161,0.6);
  background: var(--accent);
}

.switch input:checked + .switch-track .switch-thumb {
  background: #062118;
  transform: translateX(18px);
}

.switch input:focus-visible + .switch-track {
  box-shadow: 0 0 0 3px rgba(39,230,161,0.14);
}

.color-input-row {
  display: grid;
  grid-template-columns: 50px minmax(0, 1fr);
  gap: 8px;
}

.color-picker {
  width: 50px;
  height: 44px;
  padding: 4px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: rgba(0,0,0,0.2);
  cursor: pointer;
}

.hex-input-wrap {
  display: flex;
  align-items: center;
  min-width: 0;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: rgba(0,0,0,0.2);
  color: var(--faint);
}

.hex-input-wrap:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(39,230,161,0.14);
}

.hex-input-wrap:has(.is-invalid) {
  border-color: var(--danger);
}

.hex-input-wrap span {
  padding-left: 12px;
  font-family: monospace;
}

.hex-input-wrap input {
  min-width: 0;
  padding-left: 4px;
  border: 0;
  background: transparent;
}

.auto-apply-row {
  margin-top: 24px;
  padding: 15px 0 0;
  border-top: 1px solid var(--line);
}

.url-output-card {
  margin-top: 25px;
}

.url-output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.draft-status {
  color: var(--accent);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
}

.draft-status.is-pending {
  color: #f7c66a;
}

.url-output-card code {
  display: block;
  max-height: 90px;
  overflow: auto;
  color: var(--accent);
}

.behavior-note {
  display: flex;
  gap: 9px;
  margin: 16px 2px 0;
  color: var(--faint);
  font-size: 0.75rem;
  line-height: 1.5;
}

.note-icon {
  display: inline-grid;
  flex: 0 0 16px;
  place-items: center;
  width: 16px;
  height: 16px;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 0.66rem;
}

.panel-actions {
  display: flex;
  gap: 10px;
  padding: 16px 22px calc(16px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.panel-actions[hidden] {
  display: none;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  padding: 0 16px;
  cursor: pointer;
  font-weight: 650;
  font-size: 0.86rem;
}

.button-primary {
  flex: 1;
  color: #062118;
  border-color: var(--accent);
  background: var(--accent);
}

.button-primary:hover {
  background: #60f4bd;
}

.button-secondary {
  color: var(--muted);
  background: transparent;
}

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

.button:disabled, .text-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.preview-shell {
  position: relative;
  min-width: 0;
  min-height: 0;
  background: #050a0d;
  overflow: hidden;
}

.topbar {
  position: absolute;
  z-index: 5;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--topbar);
  padding: 0 20px 0 24px;
  border-bottom: 1px solid rgba(174,206,218,0.11);
  background: linear-gradient(to bottom, rgba(5,10,13,0.88), rgba(5,10,13,0));
  pointer-events: none;
}

.brand-lockup, .topbar-actions {
  pointer-events: auto;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 11px;
}

.brand-mark {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 24px;
}

.brand-mark span {
  display: block;
  width: 4px;
  border-radius: 99px;
  background: var(--accent);
}

.brand-mark span:nth-child(1) {
  height: 12px;
  opacity: .48;
}

.brand-mark span:nth-child(2) {
  height: 20px;
}

.brand-mark span:nth-child(3) {
  height: 16px;
  opacity: .74;
}

.brand-name {
  display: block;
  color: var(--text);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
}

.brand-subtitle {
  display: block;
  margin-top: 2px;
  color: var(--faint);
  font-size: 0.58rem;
  letter-spacing: 0.09em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.toolbar-button {
  color: var(--muted);
}

.preview-stage {
  position: absolute;
  inset: 0;
}

.preview-stage iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #000;
}

.preview-loading {
  position: absolute;
  z-index: 2;
  top: calc(50% - 16px);
  left: 50%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--muted);
  background: rgba(8,16,23,.8);
  backdrop-filter: blur(9px);
  transform: translate(-50%, -50%);
  font-size: 0.75rem;
  transition: opacity 500ms ease;
  pointer-events: none;
}

.preview-loading.is-hidden {
  opacity: 0;
}

.loading-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(39,230,161,.6);
  animation: pulse 1.4s infinite;
}

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 7px rgba(39,230,161,0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(39,230,161,0);
  }
}

.preview-footer {
  position: absolute;
  z-index: 4;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  min-height: var(--footer);
  gap: 16px;
  padding: 8px 20px;
  color: var(--faint);
  border-top: 1px solid rgba(174,206,218,0.1);
  background: linear-gradient(to top, rgba(5,10,13,.95), rgba(5,10,13,.3));
  font-family: monospace;
  font-size: 0.68rem;
}

.footer-credit {
  color: var(--muted);
  white-space: nowrap;
}

.footer-credit a {
  color: var(--text);
}

.footer-credit a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.footer-actions {
  display: flex;
  align-items: center;
  gap: 3px;
}

.text-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 0 9px;
  border: 1px solid transparent;
  border-radius: 7px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.69rem;
}

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

.drawer-backdrop {
  display: none;
}

.toast {
  position: fixed;
  z-index: 100;
  right: 20px;
  bottom: 58px;
  max-width: min(360px, calc(100vw - 40px));
  padding: 10px 13px;
  border: 1px solid rgba(39,230,161,.35);
  border-radius: 9px;
  color: var(--text);
  background: #112b27;
  box-shadow: 0 12px 30px rgba(0,0,0,.25);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
  pointer-events: none;
  font-size: .8rem;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.app-shell.panel-collapsed {
  grid-template-columns: 0 minmax(0, 1fr);
}

.app-shell.panel-collapsed .control-panel {
  opacity: 0;
  transform: translateX(-100%);
  pointer-events: none;
}

@media (min-width: 900px) {
  .panel-close {
    display: inline-grid;
  }
}

@media (max-width: 899px) {
  body {
    overflow: hidden;
  }
  .app-shell {
    grid-template-columns: minmax(0, 1fr);
  }
  .control-panel {
    position: fixed;
    z-index: 50;
    right: 0;
    bottom: 0;
    left: 0;
    width: auto;
    height: auto;
    max-height: 85dvh;
    border-right: 0;
    border-top: 1px solid var(--line-strong);
    border-radius: 18px 18px 0 0;
    box-shadow: 0 -22px 60px rgba(0,0,0,.38);
    transform: translateY(102%);
    opacity: 0;
    pointer-events: none;
  }
  .control-panel.mobile-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .panel-header {
    padding-top: 18px;
  }
  .panel-header::before {
    position: absolute;
    top: 8px;
    left: 50%;
    width: 38px;
    height: 4px;
    border-radius: 99px;
    background: var(--line-strong);
    content: "";
    transform: translateX(-50%);
  }
  .panel-close {
    display: inline-grid;
  }
  .panel-scroll {
    padding-top: 16px;
  }
  .drawer-backdrop {
    position: fixed;
    z-index: 40;
    inset: 0;
    display: block;
    background: rgba(1,5,7,.64);
    opacity: 0;
    pointer-events: none;
    transition: opacity 260ms ease;
  }
  body.drawer-open .drawer-backdrop {
    opacity: 1;
    pointer-events: auto;
  }
  .topbar {
    padding-left: 17px;
  }
  .preview-footer {
    padding-right: 13px;
    padding-left: 13px;
  }
  .preview-footer > #applied-label {
    max-width: 45%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

@media (max-width: 500px) {
  :root {
    --topbar: 58px;
    --footer: 43px;
  }
  .brand-subtitle {
    display: none;
  }
  .brand-name {
    font-size: .7rem;
  }
  .topbar {
    padding-right: 10px;
    padding-left: 13px;
  }
  .footer-actions {
    gap: 0;
  }
  .text-button {
    padding: 0 6px;
    font-size: 0.66rem;
  }
  .text-button svg {
    width: 14px;
    height: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}