:root {
  color-scheme: dark;
  --bg: #111217;
  --bg-soft: #181a22;
  --panel: #20232d;
  --panel-strong: #292d39;
  --text: #f7f8fb;
  --muted: #aeb4c3;
  --border: #363b49;
  --accent: #ff3b5c;
  --accent-strong: #ff5b76;
  --focus: #75d5ff;
  --danger: #ff6b6b;
  --shadow: 0 22px 80px rgba(0, 0, 0, 0.38);
  --radius: 8px;
  font-family: Arial, Helvetica, sans-serif;
}

body.light-theme {
  color-scheme: light;
  --bg: #f6f7fb;
  --bg-soft: #eef1f6;
  --panel: #ffffff;
  --panel-strong: #f3f5fa;
  --text: #161922;
  --muted: #5d6678;
  --border: #d8deeb;
  --accent: #e83051;
  --accent-strong: #c91f3e;
  --focus: #006ecb;
  --shadow: 0 22px 70px rgba(24, 31, 48, 0.14);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.drop-zone:focus-visible,
a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.site-header {
  align-items: center;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 16px;
  justify-content: space-between;
  min-height: 68px;
  padding: 14px clamp(16px, 4vw, 42px);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
}

.brand {
  align-items: center;
  color: var(--text);
  display: inline-flex;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  flex: 0 0 auto;
}

.header-actions {
  align-items: center;
  display: inline-flex;
  gap: 10px;
}

.language-control select {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  min-height: 42px;
  padding: 8px 34px 8px 10px;
}

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

.icon-button,
.tool-button,
.primary-button,
.tool-icon-button {
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: inline-flex;
  gap: 8px;
  justify-content: center;
  min-height: 42px;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.icon-button {
  background: var(--panel);
  color: var(--text);
  min-width: 42px;
  padding: 8px;
}

.icon-button:hover,
.tool-button:hover {
  background: var(--panel-strong);
  border-color: var(--accent);
}

.icon-button svg,
.tool-button svg,
.drop-icon {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.icon-button svg,
.tool-button svg {
  height: 20px;
  width: 20px;
}

.start-screen {
  margin: 0 auto;
  max-width: 1180px;
  padding: clamp(30px, 6vw, 76px) clamp(16px, 4vw, 42px) 48px;
}

.hero-copy {
  max-width: 780px;
}

.privacy-badge {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 48%, transparent);
  border-radius: 999px;
  color: var(--text);
  display: inline-flex;
  font-size: 0.92rem;
  font-weight: 700;
  margin: 0 0 18px;
  padding: 8px 12px;
}

h1 {
  font-size: clamp(3rem, 9vw, 7rem);
  line-height: 0.92;
  margin: 0;
}

h2 {
  font-size: 1.25rem;
  margin: 0 0 16px;
}

.subtitle {
  color: var(--accent-strong);
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: 800;
  margin: 18px 0 0;
}

.description {
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.6;
  margin: 16px 0 0;
  max-width: 700px;
}

.start-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  margin-top: 42px;
}

.upload-panel,
.blank-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}

.drop-zone {
  align-items: center;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, var(--panel)), var(--panel-strong));
  border: 2px dashed color-mix(in srgb, var(--accent) 52%, var(--border));
  border-radius: var(--radius);
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: center;
  min-height: 310px;
  padding: 28px;
  text-align: center;
}

.drop-zone.is-dragging {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 18%, var(--panel));
}

.drop-icon {
  color: var(--accent-strong);
  height: 58px;
  width: 58px;
}

.primary-button {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 800;
  padding: 0 18px;
}

.primary-button:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  transform: translateY(-1px);
}

.drop-zone small,
.drop-zone span,
.bottom-toolbar,
.status-message {
  color: var(--muted);
}

.blank-form {
  display: grid;
  gap: 14px;
}

.blank-form label {
  color: var(--muted);
  display: grid;
  gap: 7px;
  font-size: 0.95rem;
}

.blank-form input[type="number"],
.blank-form input[type="color"] {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  min-height: 42px;
  padding: 8px 10px;
  width: 100%;
}

.blank-form input[type="color"] {
  padding: 4px;
}

.checkbox-label {
  align-items: center;
  display: flex !important;
  flex-direction: row;
  gap: 10px !important;
}

.status-message {
  min-height: 24px;
}

.status-message.is-error {
  color: var(--danger);
}

.status-message.is-success {
  color: #58d68d;
}

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

.editor-screen {
  height: calc(100vh - 68px);
  height: calc(100dvh - 68px);
  min-height: 0;
  overflow: hidden;
}

.top-toolbar,
.bottom-toolbar {
  align-items: center;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 10px;
  min-height: 58px;
  overflow-x: auto;
  padding: 8px 12px;
}

.bottom-toolbar {
  border-bottom: 0;
  border-top: 1px solid var(--border);
  justify-content: flex-start;
  min-height: 82px;
  padding-bottom: calc(18px + env(safe-area-inset-bottom));
}

.toolbar-group {
  display: inline-flex;
  gap: 8px;
}

.toolbar-spacer {
  flex: 1;
}

.tool-button {
  background: var(--bg-soft);
  color: var(--text);
  padding: 0 12px;
  white-space: nowrap;
}

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

.tool-button.accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.zoom-readout {
  align-items: center;
  color: var(--muted);
  display: inline-flex;
  font-variant-numeric: tabular-nums;
  min-width: 64px;
  justify-content: center;
}

.editor-body {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  height: calc(100% - 140px);
  min-height: 0;
}

.tool-palette {
  background: var(--panel);
  border-bottom: 0;
  border-left: 0;
  border-right: 1px solid var(--border);
  border-radius: 0;
  border-top: 0;
  box-shadow: none;
  min-height: 0;
  overflow-y: auto;
  padding: 10px;
}

.tool-palette-inner {
  display: grid;
  gap: 8px;
}

.tool-icon-button {
  background: var(--bg-soft);
  color: var(--text);
  flex-direction: column;
  font-size: 0.74rem;
  line-height: 1.1;
  min-height: 64px;
  padding: 8px 4px;
  width: 100%;
}

.tool-icon-button svg {
  fill: none;
  height: 22px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
  width: 22px;
}

.tool-icon-button:hover,
.tool-icon-button.is-active {
  background: color-mix(in srgb, var(--accent) 18%, var(--panel-strong));
  border-color: var(--accent);
  color: var(--text);
}

.workspace {
  align-items: center;
  background:
    linear-gradient(45deg, color-mix(in srgb, var(--bg) 78%, #fff 0%) 25%, transparent 25%),
    linear-gradient(-45deg, color-mix(in srgb, var(--bg) 78%, #fff 0%) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, color-mix(in srgb, var(--bg) 78%, #fff 0%) 75%),
    linear-gradient(-45deg, transparent 75%, color-mix(in srgb, var(--bg) 78%, #fff 0%) 75%),
    #0b0c10;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-size: 16px 16px;
  display: flex;
  justify-content: center;
  min-height: 0;
  overflow: hidden;
  padding: 28px;
  position: relative;
}

.workspace.is-hand-tool,
.workspace.is-hand-tool #overlayCanvas {
  cursor: grab;
}

.workspace.is-panning,
.workspace.is-panning #overlayCanvas {
  cursor: grabbing;
}

.canvas-stack {
  position: relative;
  transform-origin: center center;
  touch-action: none;
}

.canvas-stack canvas {
  display: block;
  inset: 0;
}

#overlayCanvas {
  left: 0;
  pointer-events: auto;
  position: absolute;
  top: 0;
}

.compact-select,
.quality-control,
.setting-control {
  align-items: center;
  display: inline-flex;
  gap: 8px;
  white-space: nowrap;
}

.compact-select span,
.quality-control span,
.setting-control span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.compact-select select,
.setting-control select,
.setting-control input,
.quality-control input {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  min-height: 36px;
}

.compact-select select,
.setting-control select {
  padding: 0 30px 0 10px;
}

.setting-control input[type="number"] {
  padding: 0 8px;
  width: 76px;
}

.setting-control input[type="color"] {
  min-width: 42px;
  padding: 3px;
}

.setting-control input[type="range"],
.quality-control input {
  touch-action: pan-x;
  width: 112px;
}

.setting-control.checkbox {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-height: 36px;
  padding: 0 10px;
}

.settings-panel {
  align-items: center;
  display: flex;
  flex: 1;
  gap: 10px;
  min-width: 260px;
  overflow-x: auto;
}

#imageInfo {
  background: color-mix(in srgb, var(--bg-soft) 82%, var(--accent) 18%);
  border: 1px solid color-mix(in srgb, var(--border) 78%, var(--accent) 22%);
  border-radius: var(--radius);
  color: var(--text);
  flex: 0 0 auto;
  font-size: 0.78rem;
  font-weight: 700;
  max-width: 280px;
  overflow: hidden;
  padding: 8px 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-status {
  display: none;
}

.settings-divider {
  background: var(--border);
  height: 28px;
  min-width: 1px;
}

.arrow-style-control {
  align-items: center;
  display: inline-flex;
  gap: 8px;
  white-space: nowrap;
}

.arrow-style-control > span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.arrow-style-options {
  display: inline-flex;
  gap: 6px;
}

.arrow-style-option {
  align-items: center;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  display: inline-flex;
  height: 38px;
  justify-content: center;
  min-width: 48px;
  padding: 0 8px;
}

.arrow-style-option:hover,
.arrow-style-option.is-active {
  background: color-mix(in srgb, var(--accent) 18%, var(--panel-strong));
  border-color: var(--accent);
}

.arrow-style-option svg {
  fill: none;
  height: 24px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.6;
  width: 44px;
}

.canvas-text-editor {
  background: rgba(17, 18, 23, 0.92);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  color: #fff;
  line-height: 1.15;
  max-height: min(220px, calc(100% - 16px));
  max-width: calc(100% - 16px);
  min-height: 44px;
  min-width: 180px;
  overflow: auto;
  padding: 8px 10px;
  position: absolute;
  resize: both;
  z-index: 12;
}

.toast {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  bottom: 82px;
  box-shadow: var(--shadow);
  color: var(--text);
  left: 50%;
  max-width: min(540px, calc(100vw - 32px));
  padding: 12px 16px;
  position: fixed;
  transform: translateX(-50%);
  z-index: 50;
}

.toast.is-error {
  border-color: var(--danger);
}

.toast.is-success {
  border-color: #58d68d;
}

@media (max-width: 760px) {
  .site-header {
    min-height: 48px;
    padding: 7px 10px;
  }

  .brand {
    gap: 8px;
  }

  .brand img {
    height: 28px;
    width: 28px;
  }

  .brand span {
    font-size: 0.86rem;
  }

  .site-header .icon-button {
    min-height: 34px;
    min-width: 34px;
    padding: 6px;
  }

  .header-actions {
    gap: 6px;
  }

  .language-control select {
    font-size: 0.78rem;
    max-width: 112px;
    min-height: 34px;
    padding: 6px 24px 6px 8px;
  }

  .start-grid {
    grid-template-columns: 1fr;
  }

  .drop-zone {
    min-height: 250px;
  }

  .editor-screen {
    height: calc(100vh - 48px);
    height: calc(100dvh - 48px);
    min-height: 0;
  }

  .top-toolbar,
  .bottom-toolbar {
    gap: 6px;
    min-height: 42px;
    padding: 5px 6px;
  }

  .bottom-toolbar {
    min-height: 58px;
  }

  .editor-body {
    display: flex;
    flex-direction: column;
    height: calc(100% - 174px);
    min-height: 0;
  }

  .toolbar-group {
    gap: 5px;
  }

  .toolbar-spacer {
    min-width: 6px;
  }

  .tool-button {
    font-size: 0.82rem;
    gap: 5px;
    min-height: 36px;
    padding: 0 8px;
  }

  .tool-button svg {
    height: 18px;
    width: 18px;
  }

  .zoom-readout {
    font-size: 0.78rem;
    min-width: 46px;
  }

  .tool-palette {
    border-bottom: 1px solid var(--border);
    border-right: 0;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 5px 6px;
  }

  .tool-palette-inner {
    display: flex;
    gap: 5px;
    min-width: max-content;
  }

  .tool-icon-button {
    font-size: 0.62rem;
    gap: 4px;
    min-height: 42px;
    min-width: 44px;
    padding: 5px 4px;
  }

  .tool-icon-button svg {
    height: 18px;
    width: 18px;
  }

  .tool-icon-button span {
    display: none;
  }

  .workspace {
    flex: 1;
    min-height: 0;
    padding: 6px;
  }

  .bottom-toolbar {
    align-items: center;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    min-height: 132px;
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
  }

  .settings-panel {
    grid-column: 1 / -1;
    grid-row: 1;
    gap: 6px;
    min-width: 0;
    order: 1;
    padding-bottom: 8px;
    width: 100%;
  }

  #imageInfo {
    align-self: center;
    grid-column: 1 / -1;
    grid-row: 2;
    justify-self: center;
    max-width: min(62vw, 260px);
    order: 3;
    padding: 6px 8px;
    text-align: center;
  }

  .tool-status {
    align-self: center;
    background: color-mix(in srgb, var(--bg-soft) 88%, var(--accent) 12%);
    border: 1px solid color-mix(in srgb, var(--border) 86%, var(--accent) 14%);
    border-radius: 999px;
    color: var(--muted);
    display: inline-flex;
    font-size: 0.64rem;
    font-weight: 700;
    grid-column: 3;
    grid-row: 2;
    justify-self: end;
    letter-spacing: 0;
    order: 2;
    padding: 3px 7px;
  }

  .quality-control,
  .compact-select {
    min-height: 34px;
  }

  .compact-select,
  .quality-control,
  .setting-control,
  .arrow-style-control {
    gap: 5px;
  }

  .compact-select span,
  .quality-control span,
  .setting-control span,
  .arrow-style-control > span {
    font-size: 0.66rem;
  }

  .compact-select select,
  .setting-control select,
  .setting-control input,
  .quality-control input {
    border-radius: 6px;
    font-size: 0.78rem;
    min-height: 30px;
  }

  .compact-select select,
  .setting-control select {
    padding: 0 24px 0 8px;
  }

  .setting-control input[type="number"] {
    padding: 0 6px;
    width: 58px;
  }

  .setting-control input[type="color"] {
    height: 30px;
    min-width: 32px;
    padding: 2px;
    width: 32px;
  }

  .setting-control.color-setting span {
    display: none;
  }

  .setting-control input[type="range"],
  .quality-control input {
    width: 86px;
  }

  .setting-control.checkbox {
    min-height: 30px;
    padding: 0 8px;
  }

  .settings-divider {
    height: 24px;
  }

  .arrow-style-options {
    gap: 4px;
  }

  .arrow-style-option {
    border-radius: 6px;
    height: 30px;
    min-width: 38px;
    padding: 0 5px;
  }

  .arrow-style-option svg {
    height: 20px;
    width: 34px;
  }

  .canvas-text-editor {
    max-height: 120px;
    min-height: 36px;
    min-width: 120px;
    padding: 6px;
    resize: none;
  }

  .bottom-toolbar > span {
    font-size: 0.72rem;
  }

  .bottom-toolbar .tool-status {
    font-size: 0.64rem;
  }

  .bottom-toolbar > span:last-child {
    display: block;
    font-size: 0.62rem;
    grid-column: 1 / -1;
    grid-row: 3;
    justify-self: center;
    max-width: 100%;
    overflow: hidden;
    text-align: center;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

@media (max-width: 480px) {
  .brand span,
  .top-toolbar .tool-button span,
  .top-toolbar .compact-select span,
  .top-toolbar .quality-control span {
    display: none;
  }

  .top-toolbar .tool-button {
    min-width: 36px;
  }

  .tool-icon-button {
    min-width: 42px;
  }

  .setting-control input[type="range"],
  .quality-control input {
    width: 72px;
  }

  .settings-panel {
    scrollbar-width: thin;
  }
}