/* ============================
   Pathway Automation — Design System
   Claude-inspired, blue accent
   ============================ */

:root {
  --bg-primary: #f7f8fa;
  --bg-secondary: #ffffff;
  --bg-sidebar: #1a1a2e;
  --bg-sidebar-hover: #252545;
  --bg-sidebar-active: #2d2d5e;
  --bg-overlay: rgba(0, 0, 0, 0.45);
  --bg-input: #f0f2f5;

  --text-primary: #1a1a2e;
  --text-secondary: #5a5a7a;
  --text-muted: #8e8ea0;
  --text-sidebar: #b0b0cc;
  --text-sidebar-active: #ffffff;
  --text-on-accent: #ffffff;
  --text-danger: #e53e3e;

  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-light: #dbeafe;
  --accent-lighter: #eff6ff;

  --success: #10b981;
  --success-light: #d1fae5;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --danger: #ef4444;
  --danger-light: #fee2e2;

  --border: #e5e7eb;
  --border-focus: var(--accent);

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', 'Consolas', monospace;

  --sidebar-width: 220px;
  --transition: 150ms ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow: hidden;
  height: 100vh;
}

/* ---- Login Overlay ---- */
.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-overlay);
  backdrop-filter: blur(6px);
}

.login-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  width: 400px;
  max-width: 90vw;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.login-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.login-card p {
  color: var(--text-secondary);
  margin-bottom: 28px;
  font-size: 0.93rem;
}

.login-card .logo-icon {
  width: 48px;
  height: 48px;
  background: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.5rem;
  color: white;
  font-weight: 800;
}

/* ---- Layout ---- */
.app-layout {
  display: flex;
  height: 100vh;
  width: 100vw;
}

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

.sidebar-header {
  padding: 24px 20px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-header h2 {
  color: var(--text-sidebar-active);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sidebar-header .subtitle {
  color: var(--text-sidebar);
  font-size: 0.75rem;
  margin-top: 2px;
  opacity: 0.7;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  background: transparent;
  color: var(--text-sidebar);
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  text-align: left;
}

.sidebar-nav button:hover {
  background: var(--bg-sidebar-hover);
  color: var(--text-sidebar-active);
}

.sidebar-nav button.active {
  background: var(--bg-sidebar-active);
  color: var(--text-sidebar-active);
}

.sidebar-nav button .icon {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 12px 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-footer button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  background: transparent;
  color: var(--text-sidebar);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.sidebar-footer button:hover {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

/* ---- Main Content ---- */
.main-content {
  flex: 1;
  overflow-y: auto;
  padding: 32px 40px;
}

.tab-header {
  margin-bottom: 28px;
}

.tab-header h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.tab-header p {
  color: var(--text-secondary);
  margin-top: 4px;
  font-size: 0.93rem;
}

/* ---- Cards ---- */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.card + .card {
  margin-top: 16px;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

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

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--border);
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 6px 10px;
}

.btn-ghost:hover {
  background: var(--bg-input);
  color: var(--text-primary);
}

.btn-sm {
  padding: 5px 12px;
  font-size: 0.82rem;
}

/* ---- Inputs ---- */
.input, .textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background: var(--bg-input);
  color: var(--text-primary);
  transition: border-color var(--transition);
  outline: none;
}

.input:focus, .textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.input-password {
  padding-right: 44px;
}

.textarea {
  resize: vertical;
  min-height: 200px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ---- Select ---- */
.select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background: var(--bg-input);
  color: var(--text-primary);
  cursor: pointer;
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%235a5a7a' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-light);
}

/* ---- Tables ---- */
.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

thead th {
  text-align: left;
  padding: 10px 14px;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border);
}

tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--accent-lighter);
}

/* ---- Upload Zone ---- */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--bg-input);
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-lighter);
}

.upload-zone .upload-icon {
  font-size: 2rem;
  margin-bottom: 8px;
  color: var(--text-muted);
}

.upload-zone p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.upload-zone .upload-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---- Progress Steps ---- */
.progress-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.progress-step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  position: relative;
}

.progress-step + .progress-step {
  border-top: 1px solid var(--border);
}

.step-indicator {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.step-indicator.pending {
  background: var(--bg-input);
  color: var(--text-muted);
  border: 2px solid var(--border);
}

.step-indicator.running {
  background: var(--accent-light);
  color: var(--accent);
  border: 2px solid var(--accent);
  animation: pulse 1.5s ease-in-out infinite;
}

.step-indicator.done {
  background: var(--success);
  color: white;
  border: 2px solid var(--success);
}

.step-indicator.error {
  background: var(--danger);
  color: white;
  border: 2px solid var(--danger);
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.08); opacity: 0.85; }
}

.step-content {
  flex: 1;
  padding-top: 4px;
}

.step-content .step-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.step-content .step-message {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.step-content .step-message.error {
  color: var(--danger);
}

/* ---- Results Card ---- */
.result-card {
  background: var(--success-light);
  border: 1px solid var(--success);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-top: 20px;
}

.result-card h3 {
  color: var(--success);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.result-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  font-size: 0.88rem;
}

.result-row .label {
  color: var(--text-secondary);
  min-width: 120px;
  font-weight: 500;
}

.result-row .value {
  color: var(--text-primary);
  font-weight: 600;
  word-break: break-all;
}

.result-row .value a {
  color: var(--accent);
  text-decoration: none;
}

.result-row .value a:hover {
  text-decoration: underline;
}

.copy-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 6px;
  font-size: 0.85rem;
  border-radius: 4px;
  transition: all var(--transition);
}

.copy-btn:hover {
  background: var(--bg-input);
  color: var(--text-primary);
}

/* ---- JSON Viewer ---- */
.json-viewer {
  background: #1e1e2e;
  color: #cdd6f4;
  border-radius: var(--radius);
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  max-height: 500px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-overlay);
  backdrop-filter: blur(4px);
}

.modal {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: 32px;
  width: 600px;
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-lg {
  width: 900px;
  max-width: 95vw;
  max-height: 90vh;
}

.modal h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 24px;
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.empty-state p {
  font-size: 0.9rem;
}

/* ---- Badge ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-blue {
  background: var(--accent-light);
  color: var(--accent);
}

.badge-green {
  background: var(--success-light);
  color: var(--success);
}

/* ---- Toasts ---- */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--bg-sidebar);
  color: white;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease;
  max-width: 360px;
}

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

/* ---- Error Message ---- */
.error-msg {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 8px;
}

/* ---- Tabs toggles (source mode) ---- */
.toggle-group {
  display: inline-flex;
  background: var(--bg-input);
  border-radius: var(--radius);
  padding: 3px;
  gap: 2px;
}

.toggle-group button {
  padding: 7px 16px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.toggle-group button.active {
  background: var(--bg-secondary);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ---- Loading spinner ---- */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---- Utility ---- */
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-4 { margin-bottom: 16px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.82rem; }
.mono { font-family: var(--font-mono); }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }