:root {
  /* Color Palette — Light Theme */
  --bg-color: #f8f9fb;
  --bg-secondary: #ffffff;
  --surface-color: #ffffff;
  --surface-border: #e2e5ea;
  --surface-border-hover: #cbd0d8;

  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;

  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-light: rgba(29, 78, 216, 0.08);

  --accent: #7c3aed;

  --success: #059669;
  --success-bg: rgba(5, 150, 105, 0.08);
  --danger: #dc2626;
  --danger-bg: rgba(220, 38, 38, 0.08);
  --warning: #d97706;
  --warning-bg: rgba(217, 119, 6, 0.08);

  /* Layout & Utils */
  --sidebar-width: 280px;
  --topbar-height: 70px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: all 0.2s ease;
}

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

body {
  font-family: 'Outfit', 'Noto Sans TC', system-ui, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Background — no decorative radial gradients */
.app-background {
  display: none;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-hover);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* Layout */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-right: 1px solid var(--surface-border);
  padding: 1.5rem 1rem;
  z-index: 40;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem;
  color: var(--primary);
  margin-bottom: 2rem;
}

.logo-wrapper i {
  width: 32px;
  height: 32px;
  stroke-width: 2.5;
}

.logo-text .logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  line-height: 1.2;
}

.logo-text .subtitle {
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.sidebar-scroll::-webkit-scrollbar {
  width: 4px;
}
.sidebar-scroll::-webkit-scrollbar-track {
  background: transparent;
}
.sidebar-scroll::-webkit-scrollbar-thumb {
  background: var(--surface-border);
  border-radius: 4px;
}

.sidebar-group {
  margin-bottom: 2rem;
}

.sidebar-group-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  padding-left: 0.75rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
  transition: var(--transition);
}

.nav-link i {
  width: 18px;
  height: 18px;
  opacity: 0.7;
  transition: var(--transition);
}

.nav-link:hover {
  background: var(--primary-light);
  color: var(--text-primary);
  transform: translateX(4px);
}

.nav-link:hover i {
  opacity: 1;
  color: var(--primary);
}

.nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
  border-left: 3px solid var(--primary);
}

.nav-link.active i {
  color: var(--primary);
  opacity: 1;
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--surface-border);
}

.user-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
}

.user-avatar {
  background: var(--primary-light);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--surface-border);
  color: var(--primary);
}

.user-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

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

.user-role {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.btn-logout {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-logout:hover {
  color: var(--danger);
  background: var(--danger-bg);
}

/* Content Area */
.content-shell {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100vh;
}

.content-topbar {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--surface-border);
  position: sticky;
  top: 0;
  z-index: 30;
}

.topbar-left {
  display: flex;
  flex-direction: column;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.breadcrumb i {
  width: 12px;
  height: 12px;
}

.breadcrumb .divider {
  color: var(--surface-border);
}

.page-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
}

.topbar-actions {
  display: flex;
  gap: 1rem;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--surface-border);
  color: var(--text-secondary);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.icon-btn i {
  width: 18px;
  height: 18px;
}

.icon-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-light);
}

.page-shell {
  padding: 2rem;
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

/* Components */
.glass-card {
  background: var(--surface-color);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
}

.card {
  margin-bottom: 2rem;
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--surface-border-hover);
}

.card-header {
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid var(--surface-border);
}

.card-title {
  font-size: 1.15rem;
  color: var(--text-primary);
}

.card-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.card-body {
  padding: 1.5rem;
}

/* Metrics Grid */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.metric-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
}

.hover-lift {
  transition: var(--transition);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08), 0 0 0 1px var(--primary);
}

.metric-content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.metric-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  border: 1px solid rgba(29, 78, 216, 0.15);
}

/* Forms */
.form-stack {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

input, select, textarea {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--surface-border);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.12);
  background: var(--bg-secondary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  min-height: 48px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn i {
  width: 20px;
  height: 20px;
}

/* CTA links share button sizing */
.cta-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  min-height: 48px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary, .primary, .cta-link:not(.ghost) {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.btn-primary:hover, .primary:hover, .cta-link:not(.ghost):hover {
  background: var(--primary-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
}

.btn-secondary, .btn-ghost, .cta-link.ghost, button[type="submit"]:not(.btn):not(.primary) {
  background: var(--bg-secondary);
  border-color: var(--surface-border);
  color: var(--text-primary);
}

.btn-secondary:hover, .cta-link.ghost:hover, button[type="submit"]:not(.btn):not(.primary):hover {
  background: var(--bg-color);
  border-color: var(--surface-border-hover);
}

/* Ensure all standalone submit buttons have usable size */
button[type="submit"]:not(.btn):not(.primary):not(.btn-logout):not(.icon-btn) {
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  min-height: 48px;
  border-radius: var(--radius-md);
  cursor: pointer;
}

/* Tables */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
}

.modern-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  table-layout: fixed;
}

.modern-table th,
.modern-table td {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.modern-table th {
  padding: 1rem 1.5rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--surface-border);
  font-weight: 600;
  background: var(--bg-color);
}

.modern-table td {
  padding: 1.25rem 1.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--surface-border);
}

.table-row {
  transition: var(--transition);
}

.table-row:hover td {
  background: var(--bg-color);
  color: var(--text-primary);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-active, .badge-success, .badge-COMPLETED, .badge-PUBLISHED {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.badge-pending, .badge-warning, .badge-SUBMITTED {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(217, 119, 6, 0.2);
}

.badge-error, .badge-danger, .badge-FAILED {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(220, 38, 38, 0.2);
}

/* Flash Messages */
.flash-message {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  background: var(--bg-secondary);
  border: 1px solid var(--primary);
  color: var(--text-primary);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  font-weight: 500;
  animation: toast-slide 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transition: opacity 0.3s, transform 0.3s;
}

/* Animations */
@keyframes fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animated-fade-in {
  animation: fade-in 0.4s ease-out forwards;
}

@keyframes toast-slide {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Inline forms (like tables with input) */
.inline-form {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.inline-form input, .inline-form select {
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
  width: auto;
  border-radius: var(--radius-sm);
}

.inline-form button {
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--surface-border);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
}

.inline-form button:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

/* Hero blocks / Login forms */
.hint-block {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--bg-color);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent);
}

.hint-block p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.hint-block code {
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.06);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
}

/* Flow Steps (Stepper) — connector-line design */
.flow-header {
  margin-bottom: 2.5rem;
}

.flow-steps {
  display: flex;
  align-items: flex-start;
  counter-reset: step;
  padding: 1rem 0;
}

.flow-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  gap: 0.5rem;
  color: var(--text-tertiary);
  font-size: 0.85rem;
  font-weight: 600;
}

/* Connector line between steps */
.flow-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 16px;
  left: calc(50% + 20px);
  width: calc(100% - 40px);
  height: 2px;
  background: var(--surface-border);
  z-index: 0;
}

.flow-step.done:not(:last-child)::after {
  background: var(--success);
}

/* Numbered circle */
.flow-step-no {
  position: relative;
  z-index: 1;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--surface-border);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-tertiary);
  transition: var(--transition);
}

.flow-step.active .flow-step-no {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.flow-step.done .flow-step-no {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

/* Step label */
.flow-step-label {
  text-align: center;
  letter-spacing: 0.03em;
  line-height: 1.3;
  max-width: 110px;
}

.flow-step.active {
  color: var(--primary);
}

.flow-step.done {
  color: var(--success);
}

/* Editor Layout */
.editor-shell {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  align-items: start;
}

.editor-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.editor-side {
  position: sticky;
  top: calc(var(--topbar-height) + 2rem);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Option Grids & Cards */
.option-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.option-card, .module-card {
  padding: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  color: var(--text-primary);
  text-decoration: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.option-card:hover, .module-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08), 0 0 0 1px var(--primary);
  transform: translateY(-2px);
}

.option-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.score-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: var(--success-bg);
  color: var(--success);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  border: 1px solid rgba(5, 150, 105, 0.2);
}

/* Metrics Details */
.option-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
  gap: 0.5rem;
  margin: 1.25rem 0;
}

.option-metric {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.6rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--bg-color);
  border: 1px solid var(--surface-border);
  text-align: center;
}

.option-metric strong {
  font-size: 1.05rem;
  color: var(--text-primary);
}

.option-metric span, .option-metric small {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Route Node Timeline */
.route-outline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin-top: 1rem;
}

.route-outline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--surface-border);
  border-radius: 2px;
}

.route-node {
  position: relative;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 1rem;
  align-items: center;
}

.route-node-no {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--surface-border);
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.9rem;
  transition: var(--transition);
}

.route-node.active .route-node-no {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.route-node-body {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--surface-border);
  transition: var(--transition);
}

.route-node:hover .route-node-body {
  background: var(--bg-color);
  border-color: var(--surface-border-hover);
}

.route-node-body p {
  margin: 0.25rem 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Chat Panel & Processing */
.chat-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--bg-color);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--surface-border);
}

.chat-msg {
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  max-width: 85%;
  line-height: 1.6;
}

.chat-msg.system {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  align-self: flex-start;
  border-top-left-radius: 4px;
  border: 1px solid var(--surface-border);
}

.chat-msg.user {
  background: var(--primary);
  color: #fff;
  align-self: flex-end;
  border-top-right-radius: 4px;
}

.progress-ring {
  width: 140px;
  height: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background:
    radial-gradient(closest-side, var(--bg-secondary) 85%, transparent 86% 100%),
    conic-gradient(var(--primary) var(--progress, 0deg), var(--surface-border) 0deg);
  position: relative;
}

.progress-ring::after {
  content: '';
  position: absolute;
  top: -4px; left: -4px; right: -4px; bottom: -4px;
  border-radius: 50%;
  border: 1px solid var(--surface-border);
  pointer-events: none;
}

.progress-ring-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.progress-ring-label {
  color: var(--primary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

.processing-hero {
  display: flex;
  align-items: center;
  gap: 3rem;
  padding: 2rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--surface-border);
  margin-bottom: 2rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.hero-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  background: var(--primary-light);
  padding: 3rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(29, 78, 216, 0.15);
  margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
  .hero-panel {
    grid-template-columns: 1.5fr 1fr;
    align-items: center;
  }
}

.hero-copy {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
}

.action-stack, .hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Full-width button inside option cards */
.option-card .action-stack {
  margin-top: 1.25rem;
}

.option-card .action-stack .primary,
.option-card .action-stack .btn-primary {
  width: 100%;
  padding: 0.85rem 1.5rem;
  font-size: 1rem;
  min-height: 48px;
  border-radius: var(--radius-md);
}

.preview-hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.preview-hero-copy, .preview-hero-media {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--surface-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.preview-hero-media {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-color);
}

.preview-image, .preview-hero-image {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--surface-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.preview-hero-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: var(--radius-md);
  background: var(--bg-color);
  border: 2px dashed var(--surface-border);
  color: var(--text-tertiary);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Timeline Days inside product editing */
.timeline-day, .preview-day {
  padding: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
  transition: var(--transition);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.timeline-day:hover, .preview-day:hover {
  border-color: var(--surface-border-hover);
}

.timeline-day-head, .preview-day-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--surface-border);
  padding-bottom: 1rem;
  margin-bottom: 1rem;
}

.timeline-meta {
  color: var(--text-tertiary);
  font-size: 0.85rem;
  font-weight: 500;
}

.timeline-items, .preview-day-items, .plain-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.timeline-items li, .preview-day-items li, .plain-list li {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-color);
  color: var(--text-secondary);
  border: 1px solid transparent;
  transition: var(--transition);
}

.plain-list li {
  background: transparent;
  padding: 0.25rem 0;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.plain-list li::before {
  content: "•";
  color: var(--primary);
}

.timeline-items span, .preview-day-items span {
  display: block;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.inline-note {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}

/* Clickable route nodes */
.route-node.clickable {
  cursor: pointer;
}

.route-node.clickable:hover .route-node-no {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.route-node.clickable:hover .route-node-body {
  border-color: var(--primary);
}

/* Inline item list inside route nodes */
.route-item-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.route-item-list li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--surface-border);
}

.route-item-list li:last-child {
  border-bottom: none;
}

.route-item-list strong {
  color: var(--text-primary);
  font-weight: 600;
}

.route-item-meta {
  color: var(--text-tertiary);
  font-size: 0.8rem;
}

.route-add-hint {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 600;
}

/* Day Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.modal-overlay.open {
  display: flex;
}

.modal-panel {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  width: 680px;
  max-width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  border: 1px solid var(--surface-border);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--surface-border);
}

.modal-header h3 {
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--text-tertiary);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--text-primary);
  background: var(--bg-color);
}

.modal-body {
  padding: 1.5rem;
}

.modal-body .form-stack {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--surface-border);
}