:root {
  --primary: #4a90d9;
  --primary-dark: #1a365d;
  --bg: #f7f9fc;
  --surface: #ffffff;
  --text: #2d3748;
  --text-light: #718096;
  --border: #e2e8f0;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
}

[data-theme="dark"] {
  --primary: #63b3ed;
  --primary-dark: #1a202c;
  --bg: #171923;
  --surface: #1e2533;
  --text: #e2e8f0;
  --text-light: #a0aec0;
  --border: #2d3748;
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

[data-theme="dark"] .app-header { background: #0d1117; }
[data-theme="dark"] .tab-nav { background: #0d1117; }
[data-theme="dark"] .tab-btn { color: #a0aec0; }
[data-theme="dark"] .tab-btn.active { color: #fff; border-color: var(--primary); }
[data-theme="dark"] textarea,
[data-theme="dark"] input,
[data-theme="dark"] select { background: #2d3748; color: #e2e8f0; border-color: #4a5568; }
[data-theme="dark"] .theme-card { background: #2d3748; border-color: #4a5568; color: #e2e8f0; }
[data-theme="dark"] .theme-card.active { border-color: var(--primary); }
[data-theme="dark"] .file-upload { background: #2d3748; border-color: #4a5568; color: #a0aec0; }
[data-theme="dark"] .output-panel { background: var(--surface); }
[data-theme="dark"] .generate-btn { background: var(--primary); }
[data-theme="dark"] .studio-sidebar { background: #1a202c; border-color: #2d3748; }
[data-theme="dark"] .toolbar { background: #2d3748; border-color: #4a5568; }
[data-theme="dark"] .toolbar-btn { color: #e2e8f0; }
[data-theme="dark"] .jd-tab { background: #2d3748; color: #a0aec0; border-color: #4a5568; }
[data-theme="dark"] .jd-tab.active { background: var(--primary); color: #fff; }
[data-theme="dark"] .small-btn { background: #2d3748; color: #e2e8f0; border-color: #4a5568; }
[data-theme="dark"] #generation-log { background: #0d1117; color: #68d391; }

/* Dark mode toggle */
.theme-toggle-btn { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); border-radius: 20px; padding: 4px 12px; cursor: pointer; font-size: 16px; transition: all 0.2s; }
.theme-toggle-btn:hover { background: rgba(255,255,255,0.2); }

/* Batch button */
.batch-btn { background: #2d7d46 !important; margin-top: 8px; }
.batch-btn:hover:not(:disabled) { background: #276c3d !important; }
.batch-btn:disabled { opacity: 0.5; }
.batch-progress { margin-top: 8px; font-size: 0.8em; color: var(--text-light); }
.batch-progress .batch-item { display: flex; align-items: center; gap: 6px; padding: 4px 0; }
.batch-progress .batch-item.done { color: #48bb78; }
.batch-progress .batch-item.active { color: var(--primary); font-weight: 600; }
.batch-progress .batch-item.pending { opacity: 0.5; }

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

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

/* ─── Header ─────────────────────────────────────────────────── */
.app-header {
  background: var(--primary-dark);
  color: white;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.app-header h1 { font-size: 1.3em; font-weight: 600; }
.header-right { display: flex; align-items: center; gap: 16px; }
.model-selector { display: flex; align-items: center; gap: 6px; font-size: 0.8em; }
.model-selector select { padding: 3px 8px; border-radius: 4px; border: 1px solid rgba(255,255,255,0.3); background: rgba(255,255,255,0.1); color: white; font-size: 0.9em; }
.model-selector label { opacity: 0.7; }

.status { display: flex; align-items: center; gap: 6px; font-size: 0.75em; padding: 4px 10px; border-radius: 12px; background: rgba(255,255,255,0.1); }
.status .dot { width: 8px; height: 8px; border-radius: 50%; background: #e53e3e; }
.status.connected .dot { background: #48bb78; }

/* ─── Tabs ────────────────────────────────────────────────────── */
.tab-nav {
  background: var(--primary-dark);
  padding: 0 24px;
  display: flex;
  gap: 2px;
  border-bottom: 2px solid rgba(255,255,255,0.1);
}
.tab-btn {
  padding: 10px 20px;
  background: transparent;
  color: rgba(255,255,255,0.6);
  border: none;
  border-bottom: 2px solid transparent;
  font-size: 0.9em;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: -2px;
}
.tab-btn:hover { color: rgba(255,255,255,0.9); }
.tab-btn.active { color: white; border-bottom-color: var(--primary); background: rgba(255,255,255,0.05); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ─── Main Layout ─────────────────────────────────────────────── */
.app-main { flex: 1; padding: 20px; }

.generator-layout { display: flex; flex-direction: column; gap: 20px; }

/* ─── Input Panel ─────────────────────────────────────────────── */
.input-panel { background: var(--surface); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }

.form-section { margin-bottom: 16px; }
.form-section label { display: block; margin-bottom: 6px; }
.label-text { font-weight: 600; font-size: 0.85em; }
.label-hint { font-size: 0.75em; color: var(--text-light); margin-left: 6px; }

.file-upload {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}
.file-upload:hover { border-color: var(--primary); background: rgba(74,144,217,0.03); }
.file-upload.has-file { border-color: var(--primary); border-style: solid; background: rgba(74,144,217,0.05); }
.upload-content { display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--text-light); }
.upload-content svg { opacity: 0.5; }
.upload-content p { font-size: 0.85em; }

textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.85em;
  resize: vertical;
  transition: border-color 0.2s;
}
textarea:focus { border-color: var(--primary); outline: none; }

/* ─── Multi-JD Tabs ───────────────────────────────────────────── */
.jd-tabs { display: flex; gap: 2px; margin-bottom: 6px; }
.jd-tab {
  padding: 4px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px 4px 0 0;
  font-size: 0.75em;
  cursor: pointer;
  border-bottom: none;
}
.jd-tab.active { background: var(--surface); font-weight: 600; }
.jd-tab-add {
  padding: 4px 10px;
  background: transparent;
  border: 1px dashed var(--border);
  border-radius: 4px;
  font-size: 0.8em;
  cursor: pointer;
  color: var(--primary);
}
.jd-tab-add:hover { background: rgba(74,144,217,0.05); }

/* ─── Theme Grid ──────────────────────────────────────────────── */
.theme-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; margin-bottom: 8px; }
.theme-card {
  padding: 8px 4px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  cursor: pointer;
  text-align: center;
  font-size: 0.7em;
  transition: all 0.15s;
}
.theme-card:hover { border-color: var(--primary); }
.theme-card.active { border-color: var(--primary); background: rgba(74,144,217,0.08); font-weight: 600; }

.template-actions-row { display: flex; align-items: center; gap: 8px; margin-top: 6px; }
.import-hint { font-size: 0.75em; color: var(--text-light); }
.saved-templates-list { margin-top: 6px; }
.template-item { display: flex; justify-content: space-between; align-items: center; padding: 4px 8px; background: var(--bg); border-radius: 4px; margin: 2px 0; font-size: 0.8em; }
.template-item.selected { background: rgba(74,144,217,0.1); }
.template-btn { padding: 2px 8px; font-size: 0.75em; border: 1px solid var(--border); border-radius: 3px; background: white; cursor: pointer; }

/* ─── Buttons ─────────────────────────────────────────────────── */
.generate-btn {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 0.95em;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.generate-btn:hover:not(:disabled) { background: #3a7bc8; }
.generate-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.small-btn {
  padding: 5px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.75em;
  cursor: pointer;
  transition: all 0.15s;
}
.small-btn:hover { background: var(--bg); border-color: var(--primary); }

.action-btn {
  padding: 6px 12px;
  background: var(--primary-dark);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 0.8em;
  cursor: pointer;
  font-weight: 500;
}
.action-btn:hover { background: #2a4a6d; }
.action-btn.editing { background: #e53e3e; }

.refine-btn {
  padding: 8px 16px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 0.85em;
  cursor: pointer;
}

.spinner { width: 16px; height: 16px; animation: spin 1s linear infinite; display: inline-block; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Output Panel ────────────────────────────────────────────── */
.output-panel { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.output-header { padding: 12px 16px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); flex-wrap: wrap; gap: 8px; }
.output-header h2 { font-size: 1em; }
.output-actions { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.theme-switcher { padding: 4px 8px; border-radius: 4px; border: 1px solid var(--border); font-size: 0.8em; }

.cv-preview-container { padding: 16px; background: #f0f0f0; }
.cv-preview { width: 100%; height: 700px; border: none; background: white; box-shadow: 0 2px 12px rgba(0,0,0,0.1); }

/* ─── ATS Panel ───────────────────────────────────────────────── */
.ats-panel { padding: 12px 16px; background: #f8fafc; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 16px; }
.ats-header { display: flex; align-items: center; gap: 8px; }
.ats-score { font-size: 1.5em; font-weight: 700; color: var(--primary); }
.ats-label { font-size: 0.8em; color: var(--text-light); }
.ats-details { font-size: 0.75em; color: var(--text-light); flex: 1; }
.ats-details .matched { color: #48bb78; }
.ats-details .missing { color: #e53e3e; }

/* ─── Editor Toolbar ──────────────────────────────────────────── */
.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 6px 12px;
  background: #1a202c;
  flex-wrap: wrap;
}
.toolbar-btn {
  padding: 4px 8px;
  background: #2d3748;
  color: #e2e8f0;
  border: 1px solid #4a5568;
  border-radius: 3px;
  font-size: 11px;
  cursor: pointer;
}
.toolbar-btn:hover { background: #4a5568; color: white; }
.toolbar-btn.ai-btn { background: #2b4c7e; border-color: #4a90d9; }
.toolbar-btn.ai-btn:hover { background: #3a6298; }
.toolbar-sep { width: 1px; height: 18px; background: #4a5568; margin: 0 3px; }
.toolbar-select { padding: 3px 6px; background: #2d3748; color: #e2e8f0; border: 1px solid #4a5568; border-radius: 3px; font-size: 11px; }

/* ─── Refinement ──────────────────────────────────────────────── */
.refinement-section { padding: 12px 16px; display: flex; gap: 8px; align-items: flex-start; border-top: 1px solid var(--border); }
.refinement-section textarea { flex: 1; }

/* ─── Version History ─────────────────────────────────────────── */
.version-history { padding: 8px 16px; border-top: 1px solid var(--border); }
.version-history h4 { font-size: 0.8em; color: var(--text-light); margin-bottom: 4px; }
.version-list { display: flex; gap: 4px; flex-wrap: wrap; }
.version-item {
  padding: 3px 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: 0.7em;
  cursor: pointer;
}
.version-item:hover { border-color: var(--primary); }
.version-item.active { background: rgba(74,144,217,0.1); border-color: var(--primary); }

/* ─── Document Studio ─────────────────────────────────────────── */
.studio-layout { display: grid; grid-template-columns: 280px 1fr; gap: 16px; height: calc(100vh - 130px); }
.studio-sidebar {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  overflow-y: auto;
}
.studio-sidebar h3 { font-size: 1em; margin-bottom: 4px; }
.studio-hint { font-size: 0.75em; color: var(--text-light); margin-bottom: 12px; }
.studio-editor {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.studio-iframe-container { flex: 1; padding: 12px; background: #f0f0f0; min-height: 0; }
.studio-preview { width: 100%; height: 100%; border: none; background: white; box-shadow: 0 1px 6px rgba(0,0,0,0.1); min-height: 500px; }

.studio-export { display: flex; gap: 8px; margin-top: 12px; }
.studio-export .action-btn { flex: 1; text-align: center; }

/* ─── Progress Bar ────────────────────────────────────────────── */
#generate-progress { margin-top: 10px; }
.progress-bar { height: 4px; background: var(--border); border-radius: 2px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--primary); transition: width 0.3s; width: 0%; }
.progress-text { font-size: 0.75em; color: var(--text-light); margin-top: 4px; display: block; }

/* ─── Log Panel ───────────────────────────────────────────────── */
#generation-log {
  margin-top: 8px;
  max-height: 120px;
  overflow-y: auto;
  font-size: 10px;
  font-family: monospace;
  background: #1e1e1e;
  color: #d4d4d4;
  padding: 6px 8px;
  border-radius: 4px;
}

/* ─── Theme Builder Tab (Canvas Layout) ───────────────────────── */
.tb-canvas-layout { display: flex; flex-direction: column; height: calc(100vh - 130px); gap: 0; }
.tb-action-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; background: var(--surface); border-radius: var(--radius) var(--radius) 0 0;
  border-bottom: 1px solid var(--border); box-shadow: var(--shadow); flex-shrink: 0;
}
.tb-action-left, .tb-action-right { display: flex; align-items: center; gap: 6px; }
.tb-action-center { display: flex; align-items: center; gap: 4px; }
.tb-preset-label { font-size: 0.7em; color: var(--text-light); margin-right: 4px; }
.tb-preset { width: 30px; height: 30px; border: 1px solid var(--border); border-radius: 6px; cursor: pointer; font-size: 13px; display: flex; align-items: center; justify-content: center; background: var(--surface); transition: all 0.15s; }
.tb-preset:hover { transform: scale(1.15); box-shadow: 0 2px 8px rgba(0,0,0,0.15); border-color: var(--primary); }
.tb-theme-select { padding: 5px 8px; border: 1px solid var(--border); border-radius: 4px; font-size: 0.75em; max-width: 160px; }
.tb-preview-name { font-size: 0.72em; color: var(--text-light); font-style: italic; }
.tb-ai-bar {
  display: flex; gap: 6px; padding: 6px 12px; background: var(--surface);
  border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.tb-ai-input { flex: 1; padding: 6px 10px; border: 1px solid var(--border); border-radius: 4px; font-size: 0.8em; }
.tb-canvas-container { flex: 1; padding: 12px; background: #e8e8e8; overflow: hidden; min-height: 0; }
.tb-canvas-iframe { width: 100%; height: 100%; border: none; background: white; box-shadow: 0 2px 12px rgba(0,0,0,0.12); border-radius: 2px; min-height: 500px; }
.toolbar-color-label { display: inline-flex; align-items: center; gap: 2px; cursor: pointer; font-size: 12px; font-weight: bold; padding: 2px 4px; border-radius: 3px; position: relative; }
.toolbar-color { width: 20px; height: 20px; border: none; padding: 0; cursor: pointer; border-radius: 3px; vertical-align: middle; }
.theme-builder-actions { display: flex; gap: 6px; margin-top: 12px; }
.primary-btn { background: var(--primary); color: white; border-color: var(--primary); }
.primary-btn:hover { background: #3a7bc8; }

/* ─── Format Painter ──────────────────────────────────────────── */
.format-painter-btn { position: relative; }
.format-painter-btn.active { background: #48bb78 !important; border-color: #38a169 !important; color: white !important; }

/* ─── Responsive ──────────────────────────────────────────────── */
@media (max-width: 900px) {
  .studio-layout { grid-template-columns: 1fr; height: auto; }
  .tb-canvas-layout { height: auto; }
  .tb-action-bar { flex-wrap: wrap; }
  .theme-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ─── LLM Settings Button ─────────────────────────────────────── */
.llm-settings-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 14px; border-radius: 20px;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.25);
  color: white; cursor: pointer; font-size: 0.8em; font-weight: 500;
  transition: all 0.2s;
}
.llm-settings-btn:hover { background: rgba(255,255,255,0.2); border-color: rgba(255,255,255,0.4); }

/* ─── Modal Overlay ───────────────────────────────────────────── */
.modal-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
  z-index: 1000; display: flex; align-items: center; justify-content: center;
  animation: fadeIn 0.2s ease;
}
.modal-overlay[hidden] { display: none; }
.modal-content {
  background: var(--surface); border-radius: 12px; box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  width: 520px; max-width: 92vw; max-height: 85vh; overflow-y: auto;
  animation: slideUp 0.25s ease;
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px 16px; border-bottom: 1px solid var(--border);
}
.modal-header h2 { font-size: 1.15em; font-weight: 600; }
.modal-close {
  background: none; border: none; font-size: 1.5em; cursor: pointer;
  color: var(--text-light); padding: 4px 8px; border-radius: 6px;
  transition: all 0.15s;
}
.modal-close:hover { background: var(--bg); color: var(--text); }
.modal-body { padding: 20px 24px 24px; }

.settings-group { margin-bottom: 18px; }
.settings-group label {
  display: block; font-size: 0.82em; font-weight: 600;
  margin-bottom: 6px; color: var(--text);
}
.settings-group input, .settings-group select {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border);
  border-radius: 6px; font-size: 0.88em; font-family: inherit;
  background: var(--surface); color: var(--text); transition: border-color 0.2s;
}
.settings-group input:focus, .settings-group select:focus {
  border-color: var(--primary); outline: none;
  box-shadow: 0 0 0 3px rgba(74,144,217,0.12);
}
.settings-hint { font-size: 0.72em; color: var(--text-light); margin-top: 4px; display: block; }

.key-input-wrapper { position: relative; display: flex; }
.key-input-wrapper input { padding-right: 40px; }
.key-toggle {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; font-size: 14px; padding: 4px;
}

.settings-actions { display: flex; gap: 10px; margin-top: 22px; }
.settings-actions .action-btn { flex: 1; padding: 10px; text-align: center; font-size: 0.88em; border-radius: 6px; }

.test-result {
  margin-top: 14px; padding: 10px 14px; border-radius: 6px;
  font-size: 0.82em; line-height: 1.5;
}
.test-result.success { background: #f0fff4; color: #276749; border: 1px solid #c6f6d5; }
.test-result.error { background: #fed7d7; color: #9b2c2c; border: 1px solid #feb2b2; }
.test-result.testing { background: #ebf8ff; color: #2b6cb0; border: 1px solid #bee3f8; }

/* Dark mode additions for modal */
[data-theme="dark"] .modal-content { background: #1e2533; border: 1px solid #2d3748; }
[data-theme="dark"] .modal-header { border-color: #2d3748; }
[data-theme="dark"] .modal-close:hover { background: #2d3748; }
[data-theme="dark"] .test-result.success { background: #1a2e1a; color: #68d391; border-color: #276749; }
[data-theme="dark"] .test-result.error { background: #2d1515; color: #fc8181; border-color: #742a2a; }
[data-theme="dark"] .test-result.testing { background: #1a2338; color: #63b3ed; border-color: #2b6cb0; }
[data-theme="dark"] .llm-settings-btn { background: rgba(255,255,255,0.08); }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }