/* ═══════════════════════════════════════════════
   ThumbAI — Canvas Editor Page CSS
   ═══════════════════════════════════════════════ */

/* Override page-content for full-bleed editor */
.page-content {
  padding: 0 !important;
  max-width: none !important;
}

/* ── Editor Layout (3-column) ────────────────── */
.editor-layout {
  display: grid;
  grid-template-columns: 240px 1fr 260px;
  height: calc(100vh - var(--topbar-h));
  overflow: hidden;
}

/* ── Left Tool Panel ─────────────────────────── */
.tool-panel {
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 0.6rem;
}

.tool-section {
  padding: 0.7rem;
  border-bottom: 1px solid var(--border);
}
.tool-section:last-child { border-bottom: none; }

.tool-section-title {
  font-size: 0.68rem; font-weight: 700;
  color: var(--text3); text-transform: uppercase;
  letter-spacing: 0.8px; margin-bottom: 0.6rem;
}

.tool-btn {
  display: flex; align-items: center; gap: 0.5rem;
  width: 100%; padding: 0.5rem 0.65rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 8px; cursor: pointer;
  color: var(--text); font-family: inherit;
  font-size: 0.78rem; font-weight: 600;
  transition: background 0.15s, border-color 0.15s;
  margin-bottom: 0.35rem;
}
.tool-btn:hover { background: var(--primary-bg); border-color: var(--primary-light); color: var(--primary); }

.tool-btn-icon { font-size: 0.9rem; width: 20px; text-align: center; }

.tool-subsection {
  margin: 0.4rem 0;
}
.tool-sub-label {
  font-size: 0.65rem; font-weight: 600; color: var(--text3);
  margin-bottom: 0.35rem; display: block;
}

.shape-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.3rem;
}

.shape-btn {
  aspect-ratio: 1; display: grid; place-items: center;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 6px; cursor: pointer;
  font-size: 0.9rem; color: var(--text2);
  transition: background 0.15s, color 0.15s;
}
.shape-btn:hover { background: var(--primary-bg); color: var(--primary); border-color: var(--primary-light); }

/* Template mini grid */
.template-mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.3rem;
}

.tpl-mini {
  aspect-ratio: 16 / 9;
  display: grid; place-items: center;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 6px; cursor: pointer;
  font-size: 0.75rem; color: var(--text2);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.tpl-mini:hover, .tpl-mini.active {
  background: var(--primary-bg); color: var(--primary);
  border-color: var(--primary);
}

/* Background controls */
.bg-controls { display: flex; flex-direction: column; gap: 0.35rem; }
.bg-color-row {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.35rem 0.5rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 8px;
}
.bg-color-row input[type="color"] {
  width: 28px; height: 28px; border: 1px solid var(--border);
  border-radius: 6px; padding: 1px; cursor: pointer; background: transparent;
}
.bg-label { font-size: 0.75rem; color: var(--text2); font-weight: 500; }

.tool-select {
  width: 100%; padding: 0.45rem 0.6rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text);
  font-family: inherit; font-size: 0.75rem;
  cursor: pointer; outline: none;
}
.tool-select:focus { border-color: var(--primary); }
.tool-select option { background: var(--bg2); }

/* ── Center Canvas Area ──────────────────────── */
.canvas-area {
  display: flex; flex-direction: column;
  background: var(--bg);
  overflow: hidden;
}

.canvas-toolbar {
  display: flex; align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0.8rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 0.5rem;
}

.toolbar-left, .toolbar-right { display: flex; align-items: center; gap: 0.3rem; }

.tb-btn {
  padding: 0.35rem 0.6rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 6px; cursor: pointer;
  color: var(--text2); font-family: inherit;
  font-size: 0.75rem; font-weight: 600;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.tb-btn:hover { background: var(--primary-bg); color: var(--primary); border-color: var(--primary-light); }
.tb-btn.danger:hover { background: rgba(239,68,68,0.08); color: var(--red); border-color: rgba(239,68,68,0.3); }
.tb-btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; border: none;
}
.tb-btn.primary:hover { opacity: 0.9; }

.tb-divider { width: 1px; height: 20px; background: var(--border); margin: 0 0.2rem; }

.canvas-scroll {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.canvas-container {
  box-shadow: var(--shadow-lg);
  border-radius: 4px;
  overflow: hidden;
  line-height: 0;
}

#editorCanvas {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - var(--topbar-h) - 60px);
  height: auto;
  cursor: default;
  touch-action: none;
}

/* ── Right Panel ─────────────────────────────── */
.right-panel {
  background: var(--surface);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  display: flex; flex-direction: column;
}

.panel-block { border-bottom: 1px solid var(--border); }
.panel-block:last-child { border-bottom: none; flex: 1; }

.panel-block-header {
  padding: 0.7rem 0.9rem;
  font-size: 0.72rem; font-weight: 700;
  color: var(--text3); text-transform: uppercase;
  letter-spacing: 0.8px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}

.panel-block-body {
  padding: 0.7rem;
}

/* ── Properties ──────────────────────────────── */
.prop-empty, .layer-empty {
  padding: 1.5rem 0.5rem;
  text-align: center;
  font-size: 0.75rem; color: var(--text3);
}

.prop-section-title {
  font-size: 0.72rem; font-weight: 700;
  color: var(--primary); margin-bottom: 0.6rem;
}

.prop-row {
  display: flex; align-items: center; gap: 0.4rem;
  margin-bottom: 0.5rem;
}

.prop-row label {
  font-size: 0.65rem; font-weight: 600;
  color: var(--text3); width: auto; min-width: 22px;
  margin-bottom: 0;
}

.prop-input {
  flex: 1; padding: 0.3rem 0.45rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 5px; color: var(--text);
  font-family: inherit; font-size: 0.72rem;
  outline: none; min-width: 0;
}
.prop-input:focus { border-color: var(--primary); }
.prop-input.sm { max-width: 50px; }

.prop-range {
  flex: 1; height: 4px; accent-color: var(--primary);
}

.prop-val {
  font-size: 0.65rem; color: var(--text3);
  min-width: 30px; text-align: right;
}

.prop-color {
  width: 28px; height: 28px; padding: 1px;
  border: 1px solid var(--border); border-radius: 5px;
  background: transparent; cursor: pointer;
}

.prop-select {
  flex: 1; padding: 0.3rem 0.4rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 5px; color: var(--text);
  font-family: inherit; font-size: 0.72rem;
  cursor: pointer; outline: none;
}
.prop-select:focus { border-color: var(--primary); }
.prop-select option { background: var(--bg2); }

.prop-group { margin-bottom: 0.5rem; }
.prop-group label {
  font-size: 0.65rem; font-weight: 600;
  color: var(--text3); display: block;
  margin-bottom: 0.25rem;
}

.prop-textarea {
  width: 100%; padding: 0.35rem 0.5rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 5px; color: var(--text);
  font-family: inherit; font-size: 0.75rem;
  resize: vertical; min-height: 48px; outline: none;
}
.prop-textarea:focus { border-color: var(--primary); }

.prop-divider { height: 1px; background: var(--border); margin: 0.6rem 0; }

.prop-btn-group {
  display: flex; gap: 0.2rem;
}

.prop-btn {
  padding: 0.25rem 0.5rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 4px; cursor: pointer;
  color: var(--text2); font-size: 0.72rem;
  transition: background 0.15s;
}
.prop-btn:hover, .prop-btn.active {
  background: var(--primary-bg); color: var(--primary);
  border-color: var(--primary-light);
}

.prop-btn-sm {
  padding: 0.15rem 0.4rem;
  background: rgba(239,68,68,0.06); border: 1px solid rgba(239,68,68,0.15);
  color: var(--red); border-radius: 4px;
  cursor: pointer; font-size: 0.65rem;
}
.prop-btn-sm:hover { background: rgba(239,68,68,0.12); }

/* ── Layers ──────────────────────────────────── */
.layers-body {
  padding: 0.4rem;
}

.layer-item {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.12s;
  margin-bottom: 2px;
}
.layer-item:hover { background: var(--primary-bg); }
.layer-item.selected {
  background: var(--primary-bg2);
  border: 1px solid rgba(124,58,237,0.2);
}

.layer-icon {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  background: var(--bg3); border-radius: 4px;
  font-size: 0.7rem; color: var(--primary);
  font-weight: 700; flex-shrink: 0;
}

.layer-label {
  flex: 1; font-size: 0.72rem; font-weight: 500;
  color: var(--text); overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
}

.layer-vis-btn {
  background: none; border: none; cursor: pointer;
  font-size: 0.7rem; padding: 2px;
  opacity: 0.5; transition: opacity 0.15s;
}
.layer-vis-btn:hover { opacity: 1; }

/* ── AI Elements Section ─────────────────────── */
.ai-section .tool-section-title {
  display: flex; align-items: center; justify-content: space-between;
}

.ai-badge {
  font-size: 0.58rem; font-weight: 700;
  padding: 2px 7px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; letter-spacing: 0.3px;
}

.ai-prompt-box {
  display: flex; flex-direction: column; gap: 0.35rem;
  margin-bottom: 0.5rem;
}

.ai-input {
  width: 100%; padding: 0.45rem 0.6rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text);
  font-family: inherit; font-size: 0.75rem;
  outline: none; transition: border-color 0.2s;
}
.ai-input:focus { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(124,58,237,0.1); }
.ai-input::placeholder { color: var(--text3); }

.ai-style-select {
  width: 100%; padding: 0.35rem 0.5rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text);
  font-family: inherit; font-size: 0.7rem;
  cursor: pointer; outline: none;
}
.ai-style-select:focus { border-color: var(--primary); }
.ai-style-select option { background: var(--bg2); }

.ai-generate-btn {
  width: 100%; padding: 0.5rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; border: none; border-radius: 8px;
  font-family: inherit; font-size: 0.78rem; font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  box-shadow: 0 2px 10px rgba(124,58,237,0.25);
  display: flex; align-items: center; justify-content: center; gap: 0.3rem;
}
.ai-generate-btn:hover:not(:disabled) { opacity: 0.9; transform: translateY(-1px); }
.ai-generate-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.ai-error {
  padding: 0.4rem 0.6rem;
  background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.2);
  border-radius: 6px; color: var(--red);
  font-size: 0.7rem; margin-bottom: 0.4rem;
}

.ai-quick-prompts {
  display: flex; flex-wrap: wrap; gap: 0.25rem;
  margin-bottom: 0.5rem;
}

.ai-chip {
  padding: 0.2rem 0.5rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 14px; cursor: pointer;
  color: var(--text2); font-family: inherit;
  font-size: 0.62rem; font-weight: 500;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.ai-chip:hover {
  background: var(--primary-bg); color: var(--primary);
  border-color: var(--primary-light);
}

.ai-generated-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.3rem;
}

.ai-grid-item {
  aspect-ratio: 1;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.1s;
  background: var(--bg3);
}
.ai-grid-item:hover {
  border-color: var(--primary-light);
  box-shadow: 0 2px 8px rgba(124,58,237,0.15);
  transform: scale(1.03);
}
.ai-grid-item img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
}

/* ── Dark mode ───────────────────────────────── */
[data-theme="dark"] .tool-select option,
[data-theme="dark"] .prop-select option,
[data-theme="dark"] .ai-style-select option {
  background: var(--bg3);
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 1024px) {
  .editor-layout {
    grid-template-columns: 200px 1fr 220px;
  }
}

@media (max-width: 768px) {
  .editor-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
  }
  .tool-panel {
    border-right: none;
    border-bottom: 1px solid var(--border);
    display: flex;
    overflow-x: auto;
    gap: 0.3rem;
    padding: 0.5rem;
  }
  .tool-section {
    border-bottom: none;
    border-right: 1px solid var(--border);
    padding: 0.4rem 0.6rem;
    min-width: 160px;
    flex-shrink: 0;
  }
  .right-panel {
    border-left: none;
    border-top: 1px solid var(--border);
    max-height: 200px;
    flex-direction: row;
  }
  .panel-block { flex: 1; border-bottom: none; border-right: 1px solid var(--border); }
}