:root {
  --page-bg: #edf7f2;
  --paper: #ffffff;
  --panel: rgba(255, 255, 255, 0.86);
  --line: rgba(104, 136, 121, 0.26);
  --line-strong: rgba(75, 119, 93, 0.34);
  --ink: #172033;
  --muted: #6d7892;
  --accent: #2f9b67;
  --accent-strong: #257a51;
  --danger: #db4a78;
  --focus: #25c3d8;
  --shadow: 0 24px 60px rgba(22, 31, 54, 0.12);
  --shadow-soft: 0 10px 30px rgba(22, 31, 54, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(47, 155, 103, 0.12), transparent 32%),
    radial-gradient(circle at top right, rgba(126, 211, 168, 0.12), transparent 28%),
    linear-gradient(180deg, #f8faff 0%, var(--page-bg) 48%, #e2efe8 100%);
  font-family: "Aptos", "Segoe UI", Arial, sans-serif;
}

button,
input {
  font: inherit;
}

button,
input[type="text"],
input[type="number"] {
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease,
    background-color 160ms ease,
    color 160ms ease;
}

button {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  cursor: pointer;
  min-height: 42px;
  padding: 0 14px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-soft);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
  transform: none;
  box-shadow: none;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.68);
  backdrop-filter: blur(18px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.75);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 16px;
  background: linear-gradient(135deg, #43b37c 0%, #2f9b67 52%, #7ed3a8 100%);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 16px 32px rgba(47, 155, 103, 0.25);
}

.brand-copy {
  min-width: 0;
}

.topbar h1 {
  margin: 0 0 4px;
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.topbar p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(47, 155, 103, 0.16);
  color: var(--accent-strong);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(47, 155, 103, 0.1));
  border-radius: 999px;
  padding: 10px 14px;
  white-space: nowrap;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow-soft);
}

.status-pill:hover,
.status-pill:focus-visible {
  border-color: rgba(47, 155, 103, 0.42);
  box-shadow: 0 12px 24px rgba(47, 155, 103, 0.14);
}

.workspace {
  display: grid;
  grid-template-columns: 320px minmax(460px, 1fr) 300px;
  gap: 18px;
  align-items: start;
  padding: 18px;
  min-height: 0;
  flex: 1;
}

.panel,
.stage-panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.controls-panel,
.preview-panel {
  padding: 16px;
  overflow: auto;
}

.control-group {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 22px;
  padding: 18px;
  box-shadow: var(--shadow-soft);
}

.control-group + .control-group {
  margin-top: 16px;
}

.section-kicker {
  margin-bottom: 8px;
  color: #5f8a71;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.control-group h2 {
  margin: 0 0 14px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.group-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.file-drop {
  display: block;
  border: 1px dashed rgba(47, 155, 103, 0.3);
  border-radius: 20px;
  padding: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(47, 155, 103, 0.04));
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.85) inset;
}

.file-drop:hover {
  border-color: rgba(47, 155, 103, 0.55);
  background: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(47, 155, 103, 0.08));
}

.file-drop.is-drag-over {
  border-color: rgba(47, 155, 103, 0.72);
  background: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(47, 155, 103, 0.14));
  box-shadow: 0 0 0 4px rgba(47, 155, 103, 0.1);
}

.file-drop + .file-drop {
  margin-top: 12px;
}

.file-drop span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 6px;
}

.file-drop strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 16px;
}

.file-drop small {
  display: block;
  margin-top: 8px;
  color: #6d8e7a;
  font-size: 12px;
  line-height: 1.5;
}

.file-drop input,
.hidden {
  display: none;
}

.field-row,
.range-field,
.text-field {
  display: block;
  margin-top: 14px;
}

.size-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.field-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.field-row label {
  font-weight: 600;
}

.range-field span,
.text-field span {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

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

.text-field input {
  width: 100%;
  border: 1px solid rgba(47, 155, 103, 0.14);
  border-radius: 16px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.85) inset;
}

.text-field input::placeholder {
  color: #8aa595;
}

.text-field p,
.field-note {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.field-note {
  margin-top: 10px;
}

.align-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 16px;
}

.align-grid button,
.icon-button {
  min-height: 44px;
  font-size: 14px;
  font-weight: 600;
}

.icon-button {
  padding-inline: 16px;
}

.format-toggle {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 16px 0;
}

.format-toggle label {
  position: relative;
}

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

.format-toggle span {
  display: grid;
  place-items: center;
  min-height: 44px;
  border: 1px solid rgba(47, 155, 103, 0.14);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.92);
  cursor: pointer;
  font-weight: 700;
}

.format-toggle input:checked + span {
  border-color: rgba(47, 155, 103, 0.5);
  color: var(--accent-strong);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(47, 155, 103, 0.14));
  box-shadow: 0 10px 24px rgba(47, 155, 103, 0.12);
}

.primary-button,
.danger-button {
  width: 100%;
  color: #fff;
  border: 0;
  margin-top: 10px;
  font-weight: 700;
}

.primary-button {
  background: linear-gradient(135deg, #43b37c 0%, #2f9b67 100%);
  box-shadow: 0 18px 28px rgba(47, 155, 103, 0.26);
}

.primary-button:hover:not(:disabled) {
  background: linear-gradient(135deg, #4bbb82 0%, #349f6d 100%);
}

.danger-button {
  background: linear-gradient(135deg, #f16994 0%, #db4a78 100%);
  box-shadow: 0 16px 26px rgba(219, 74, 120, 0.18);
}

.project-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.project-actions .primary-button,
.project-actions .icon-button {
  margin-top: 0;
}

.progress-wrap {
  margin-top: 14px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(47, 155, 103, 0.06);
}

progress {
  width: 100%;
  height: 12px;
  accent-color: var(--accent);
}

#progressText {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
}

.stage-panel {
  display: flex;
  flex-direction: column;
  align-self: start;
  min-width: 0;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.85), rgba(242, 248, 244, 0.8));
}

.stage-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(160, 174, 204, 0.18);
  background: rgba(255, 255, 255, 0.62);
}

.stage-toolbar strong,
.stage-toolbar span {
  display: block;
}

.stage-toolbar strong {
  font-size: 18px;
  letter-spacing: -0.02em;
}

.stage-toolbar span {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

.stage-toolbar button {
  padding: 0 16px;
}

.canvas-frame {
  flex: 0 0 auto;
  min-height: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  overflow: auto;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.55), transparent 46%), linear-gradient(180deg, #eef5f0 0%, #e3ede6 100%);
  position: relative;
}

.canvas-frame::before {
  content: "";
  position: absolute;
  inset: 22px;
  border-radius: 28px;
  background-image:
    linear-gradient(45deg, rgba(194, 202, 222, 0.35) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(194, 202, 222, 0.35) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(194, 202, 222, 0.35) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(194, 202, 222, 0.35) 75%);
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
  border: 1px solid rgba(255, 255, 255, 0.7);
  pointer-events: none;
}

#stageCanvas {
  position: relative;
  z-index: 1;
  max-width: 100%;
  max-height: min(62vh, 640px);
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 26px 60px rgba(41, 55, 94, 0.2);
  touch-action: none;
}

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

.preview-item {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(47, 155, 103, 0.1);
  border-radius: 18px;
  padding: 10px;
  box-shadow: var(--shadow-soft);
}

.preview-item img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: linear-gradient(180deg, #ffffff 0%, #f4faf6 100%);
  border-radius: 14px;
}

.preview-item span,
.empty-state {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 8px;
  overflow-wrap: anywhere;
  line-height: 1.45;
}

.empty-state {
  padding: 18px;
  border-radius: 18px;
  background: rgba(47, 155, 103, 0.06);
}

button:focus-visible,
input:focus-visible,
.file-drop:focus-within {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

button:focus-visible,
input[type="text"]:focus-visible,
input[type="number"]:focus-visible {
  box-shadow: 0 0 0 5px rgba(37, 195, 216, 0.18);
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: 300px minmax(360px, 1fr);
  }

  .preview-panel {
    grid-column: 1 / -1;
  }

  .preview-list {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
}

@media (max-width: 760px) {
  .topbar,
  .stage-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .workspace {
    grid-template-columns: 1fr;
    padding: 12px;
  }

  .topbar {
    padding: 18px;
  }

  .brand-block {
    align-items: flex-start;
  }

  .controls-panel,
  .preview-panel {
    padding: 12px;
  }

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

  .canvas-frame {
    min-height: 340px;
    padding: 18px;
  }

  .canvas-frame::before {
    inset: 14px;
  }
}