*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --accent: #6b8afd;
  --accent-hover: #5578f5;
  --border-focus: #6b8afd;
  --radius: 12px;
  --radius-sm: 8px;
  --font: "DM Sans", system-ui, -apple-system, sans-serif;
}

:root,
[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f5f8;
  --bg-elevated: #ffffff;
  --bg-panel: #ffffff;
  --border: #dde1ea;
  --text: #1a1d26;
  --text-muted: #6b7289;
  --accent-soft: rgba(107, 138, 253, 0.12);
  --crop-border: #ffffff;
  --crop-shadow: rgba(15, 17, 23, 0.5);
  --crop-grid: rgba(255, 255, 255, 0.35);
  --shadow: 0 8px 32px rgba(15, 17, 23, 0.08);
  --btn-primary-text: #ffffff;
  --body-gradient:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(107, 138, 253, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(107, 138, 253, 0.06), transparent);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1117;
  --bg-elevated: #181b24;
  --bg-panel: #1e2230;
  --border: #2d3348;
  --text: #e8eaf0;
  --text-muted: #9399ad;
  --accent-soft: rgba(107, 138, 253, 0.15);
  --crop-border: #ffffff;
  --crop-shadow: rgba(0, 0, 0, 0.55);
  --crop-grid: rgba(255, 255, 255, 0.35);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --btn-primary-text: #ffffff;
  --body-gradient:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(107, 138, 253, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(107, 138, 253, 0.08), transparent);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    color-scheme: dark;
    --bg: #0f1117;
    --bg-elevated: #181b24;
    --bg-panel: #1e2230;
    --border: #2d3348;
    --text: #e8eaf0;
    --text-muted: #9399ad;
    --accent-soft: rgba(107, 138, 253, 0.15);
    --crop-border: #ffffff;
    --crop-shadow: rgba(0, 0, 0, 0.55);
    --crop-grid: rgba(255, 255, 255, 0.35);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    --btn-primary-text: #ffffff;
    --body-gradient:
      radial-gradient(ellipse 80% 50% at 50% -20%, rgba(107, 138, 253, 0.18), transparent),
      radial-gradient(ellipse 60% 40% at 100% 100%, rgba(107, 138, 253, 0.08), transparent);
  }
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

body {
  background-image: var(--body-gradient);
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.header__brand {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.header__logo {
  width: 40px;
  height: 40px;
  color: var(--accent);
  flex-shrink: 0;
}

.header__title {
  margin: 0;
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header__tagline {
  margin: 0.125rem 0 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  color: var(--text-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.app {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2.5rem;
}

.ad-slot {
  margin-bottom: 1.25rem;
  padding: 0.625rem 0.75rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  overflow: hidden;
}

.ad-slot--bottom {
  margin-bottom: 0;
  margin-top: 1.25rem;
}

.ad-slot__label {
  display: block;
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.375rem;
  text-align: center;
}

.ad-slot__frame {
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-slot__frame .adsbygoogle {
  width: 100%;
}

.main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 960px) {
  .main {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

[hidden] {
  display: none !important;
}

.panel__header {
  padding: 1rem 1.25rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.panel__header--with-action {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.panel__header h2 {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.panel__hint {
  margin: 0.25rem 0 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.dropzone {
  position: relative;
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.dropzone--has-image {
  min-height: 0;
  padding: 0;
}

.dropzone--dragover .dropzone__card {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: scale(1.01);
}

.dropzone__empty {
  width: 100%;
  display: flex;
  justify-content: center;
}

.dropzone__card {
  width: 100%;
  max-width: 380px;
  padding: 2.5rem 2rem;
  text-align: center;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.dropzone__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
}

.dropzone__title {
  margin: 0 0 0.375rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.dropzone__subtitle {
  margin: 0 0 1.25rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.dropzone__browse {
  min-width: 10rem;
}

.crop-stage {
  position: relative;
  width: 100%;
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  user-select: none;
}

.crop-workspace {
  position: relative;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

#sourceCanvas {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: top;
}

.crop-ui {
  position: absolute;
  inset: 0;
  touch-action: none;
  cursor: grab;
}

.crop-ui--dragging {
  cursor: grabbing;
}

.crop-ui--locked {
  cursor: default;
}

.crop-shade {
  position: absolute;
  background: var(--crop-shadow);
  pointer-events: none;
}

.crop-box {
  position: absolute;
  border: 2px solid var(--crop-border);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.3);
  pointer-events: none;
}

.crop-box__grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to right, var(--crop-grid) 1px, transparent 1px) calc(100% / 3) 0 / calc(100% / 3) 100%,
    linear-gradient(to bottom, var(--crop-grid) 1px, transparent 1px) 0 calc(100% / 3) / 100% calc(100% / 3);
  opacity: 0.5;
}

.crop-controls {
  padding: 0.75rem 1.25rem 1.25rem;
  border-top: 1px solid var(--border);
}

.crop-controls__hint {
  margin: 0.5rem 0 0;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.controls {
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
}

.control-group {
  margin: 0;
  padding: 0;
  border: none;
}

.control-group legend {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.625rem;
}

.control {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.control--inline {
  flex: 1;
  min-width: 0;
}

.control span {
  font-weight: 500;
}

.control input[type="number"],
.control select {
  width: 100%;
  padding: 0.5rem 0.625rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 0.9375rem;
}

.control input[type="number"]:focus,
.control select:focus,
.control input[type="range"]:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 1px;
}

.dimension-row {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
}

.dimension-row .control--inline {
  position: relative;
}

.dimension-row .unit {
  position: absolute;
  right: 0.625rem;
  bottom: 0.5625rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  pointer-events: none;
}

.dimension-row input[type="number"] {
  padding-right: 1.75rem;
}

.scale-source {
  margin: 0 0 0.625rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.scale-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.scale-row input[type="range"] {
  flex: 1;
}

.scale-input {
  position: relative;
  width: 6.5rem;
  flex-shrink: 0;
}

.scale-input input[type="number"] {
  padding-right: 1.75rem;
}

.scale-note {
  margin: 0.625rem 0 0;
  font-size: 0.75rem;
  color: var(--accent);
  line-height: 1.4;
}

.link-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  margin-bottom: 0.125rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

.link-btn[aria-pressed="false"] {
  color: var(--text-muted);
}

.link-btn:hover {
  border-color: var(--accent);
}

.preset-row {
  margin-top: 0.75rem;
}

.preset-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.375rem;
}

.preset-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.preset-btn {
  padding: 0.3125rem 0.625rem;
  font: inherit;
  font-size: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  color: var(--text-muted);
  cursor: pointer;
}

.preset-btn:hover,
.preset-btn--active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.export-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

#qualityGroup {
  flex: 1;
  min-width: 140px;
}

#qualityGroup input[type="range"] {
  flex: 1;
}

#qualityValue {
  font-size: 0.8125rem;
  color: var(--text);
  min-width: 2.5rem;
  text-align: right;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.action-row {
  display: flex;
  gap: 0.625rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.125rem;
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

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

.btn--primary {
  background: var(--accent);
  color: var(--btn-primary-text);
}

.btn--primary:not(:disabled):hover {
  background: var(--accent-hover);
}

.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn--ghost:not(:disabled):hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.btn--sm {
  padding: 0.4375rem 0.75rem;
  font-size: 0.8125rem;
  flex-shrink: 0;
}

.preview {
  padding: 1.25rem;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview__empty {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.preview__empty p {
  margin: 0;
}

.preview__content {
  width: 100%;
  text-align: center;
}

#previewCanvas {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background:
    linear-gradient(45deg, var(--border) 25%, transparent 25%) 0 0 / 12px 12px,
    linear-gradient(-45deg, var(--border) 25%, transparent 25%) 0 0 / 12px 12px,
    linear-gradient(45deg, transparent 75%, var(--border) 75%) 0 0 / 12px 12px,
    linear-gradient(-45deg, transparent 75%, var(--border) 75%) 0 0 / 12px 12px;
  background-color: var(--bg);
}

.preview__meta {
  margin: 0.625rem 0 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
}