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

:root {
  --bg: #f7f7f5;
  --panel: #ffffff;
  --line: rgba(0, 0, 0, 0.12);
  --accent: #eaff00;
  --accent-dim: #b8cc00;
  --accent-glow: rgba(234, 255, 0, 0.45);
  --text: #141414;
  --muted: rgba(20, 20, 20, 0.55);
  --danger: #e6003a;
  --shadow: 0 10px 36px rgba(0, 0, 0, 0.08);
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Mono", "Consolas", monospace;
}

body {
  background:
    radial-gradient(circle at 14% 16%, rgba(234, 255, 0, 0.18), transparent 34%),
    radial-gradient(circle at 86% 84%, rgba(234, 255, 0, 0.1), transparent 30%),
    var(--bg);
}

a {
  color: var(--text);
}

.shell {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 28px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand__title {
  margin: 0;
  font-size: clamp(1.4rem, 4vw, 2rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand__tag {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.topbar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 10px 14px;
  font: inherit;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
  text-decoration: none;
}

.btn:hover {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 1px var(--accent), 0 0 18px var(--accent-glow);
}

.btn--primary {
  border-color: #1a1a1a;
  background: var(--accent);
  color: #141414;
  box-shadow: 0 0 16px var(--accent-glow);
}

.btn--primary:hover {
  background: #f4ff33;
  box-shadow: 0 0 22px var(--accent-glow);
}

.btn--ghost {
  opacity: 0.9;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.view {
  display: none;
}

.view.is-active {
  display: block;
}

.hero {
  border: 1px solid var(--line);
  padding: 24px;
  margin-bottom: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero p {
  margin: 0;
  max-width: 62ch;
  line-height: 1.65;
  color: var(--muted);
  font-size: 0.85rem;
}

.hero p + p {
  margin-top: 12px;
}

.sync-note {
  margin-top: 14px;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--accent-dim);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.wall-card {
  border: 1px solid var(--line);
  background: var(--panel);
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
  position: relative;
}

.wall-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-dim);
  box-shadow: 0 8px 28px var(--accent-glow);
}

.wall-card__img {
  aspect-ratio: 4 / 3;
  width: 100%;
  object-fit: cover;
  display: block;
  background: #ececea;
}

.wall-card__body {
  padding: 12px 14px 14px;
}

.wall-card__remove {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  border: 1px solid rgba(230, 0, 58, 0.35);
  background: rgba(255, 255, 255, 0.96);
  color: var(--danger);
  padding: 6px 10px;
  font: inherit;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.wall-card__remove:hover {
  background: rgba(230, 0, 58, 0.1);
  border-color: var(--danger);
}

.wall-card--owned {
  outline: 1px solid rgba(234, 255, 0, 0.35);
}

.paint-actions .btn--danger {
  margin-left: auto;
}

.btn--danger {
  border-color: rgba(230, 0, 58, 0.35);
  color: var(--danger);
}

.btn--danger:hover {
  background: rgba(230, 0, 58, 0.08);
  border-color: var(--danger);
  box-shadow: none;
}

.wall-card__loc {
  margin: 0 0 6px;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.wall-card__meta {
  margin: 0;
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.empty-state {
  border: 1px dashed var(--line);
  padding: 48px 24px;
  text-align: center;
  color: var(--muted);
  background: var(--panel);
}

.upload-panel,
.paint-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.upload-panel {
  max-width: 560px;
  padding: 24px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.field label {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.field input[type="text"],
.field input[type="file"] {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  padding: 10px 12px;
  font: inherit;
  font-size: 0.82rem;
}

.field input[type="text"]:focus {
  outline: none;
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.dropzone {
  border: 1px dashed var(--line);
  padding: 28px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
  background: #fafafa;
}

.dropzone.is-dragover {
  border-color: var(--accent-dim);
  background: rgba(234, 255, 0, 0.12);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.dropzone__hint {
  margin: 0;
  font-size: 0.78rem;
  color: var(--muted);
}

.preview-wrap {
  margin-top: 16px;
  display: none;
}

.preview-wrap.is-visible {
  display: block;
}

.preview-wrap img {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  border: 1px solid var(--line);
  background: #ececea;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.paint-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 16px;
  align-items: start;
}

@media (max-width: 900px) {
  .paint-layout {
    grid-template-columns: 1fr;
  }
}

.canvas-wrap {
  position: relative;
  border: 1px solid var(--line);
  background: #ececea;
  overflow: hidden;
  touch-action: none;
  user-select: none;
  box-shadow: var(--shadow);
}

.canvas-wrap canvas {
  display: block;
  width: 100%;
  height: auto;
}

.canvas-wrap canvas.paint-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.toolbar {
  border: 1px solid var(--line);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.toolbar__heading {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text);
  background: var(--accent);
  display: inline-block;
  padding: 4px 8px;
  width: fit-content;
}

.tool-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tool-btn {
  flex: 1 1 calc(50% - 4px);
  min-width: 96px;
}

.tool-btn.is-active {
  border-color: #1a1a1a;
  color: #141414;
  background: var(--accent);
  box-shadow: 0 0 14px var(--accent-glow);
}

.palette {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

.swatch {
  aspect-ratio: 1;
  border: 1px solid rgba(0, 0, 0, 0.12);
  cursor: pointer;
  padding: 0;
}

.swatch.is-active {
  outline: 2px solid #141414;
  outline-offset: 2px;
  box-shadow: 0 0 10px var(--accent-glow);
}

.range-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

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

#color-picker {
  width: 100%;
  height: 36px;
  border: 1px solid var(--line);
  padding: 2px;
  background: #fff;
  cursor: pointer;
}

.paint-meta {
  margin: 0;
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--muted);
}

.status {
  min-height: 1.2em;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--accent-dim);
}

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

.hidden {
  display: none !important;
}