:root {
  --bridge-green: #0d6b4f;
  --bridge-green-light: #10a37f;
  --bridge-gold: #c9a227;
  --bridge-navy: #1a2b3c;
  --bridge-bg: #f4f7f6;
  --bridge-card: #ffffff;
  --bridge-text: #1f2937;
  --bridge-muted: #6b7280;
  --bridge-border: #e5e7eb;
  --bridge-radius: 12px;
  --bridge-shadow: 0 4px 24px rgba(26, 43, 60, 0.08);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

body {
  margin: 0;
  color: var(--bridge-text);
  background: var(--bridge-bg);
  line-height: 1.6;
}

a {
  color: var(--bridge-green);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

.site-header {
  background: var(--bridge-navy);
  color: #fff;
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bridge-green), var(--bridge-gold));
  display: grid;
  place-items: center;
  font-size: 1.25rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: #e5e7eb;
  text-decoration: none;
  font-weight: 500;
}

.site-nav a:hover {
  color: #fff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--bridge-green);
  color: #fff;
}

.btn-primary:hover {
  background: var(--bridge-green-light);
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  text-decoration: none;
}

.btn-outline {
  background: #fff;
  color: var(--bridge-green);
  border: 1px solid var(--bridge-green);
}

.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--bridge-navy);
  margin: 0 0 1rem;
  line-height: 1.2;
}

.hero .tagline {
  font-size: 1.25rem;
  color: var(--bridge-muted);
  max-width: 720px;
  margin: 0 auto 2rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--bridge-green);
  margin: 0 0 0.5rem;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  padding-bottom: 4rem;
}

.capability-card {
  background: var(--bridge-card);
  border: 1px solid var(--bridge-border);
  border-radius: var(--bridge-radius);
  padding: 1.5rem;
  box-shadow: var(--bridge-shadow);
  transition: transform 0.15s, box-shadow 0.15s;
}

.capability-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(26, 43, 60, 0.12);
}

.capability-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--bridge-navy);
}

.capability-card p {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  color: var(--bridge-muted);
}

.capability-card .built-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bridge-green);
  background: #d1fae5;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}

.site-footer {
  background: var(--bridge-navy);
  color: #9ca3af;
  padding: 2rem 0;
  text-align: center;
  font-size: 0.9rem;
}

/* Workspace */
.hub-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - 72px);
}

.hub-sidebar {
  background: var(--bridge-navy);
  color: #fff;
  padding: 1.5rem 0;
  overflow-y: auto;
}

.hub-sidebar h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #9ca3af;
  padding: 0 1.25rem;
  margin: 1rem 0 0.5rem;
}

.hub-nav a {
  display: block;
  padding: 0.6rem 1.25rem;
  color: #e5e7eb;
  text-decoration: none;
  font-size: 0.9rem;
  border-left: 3px solid transparent;
}

.hub-nav a:hover,
.hub-nav a.active {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-left-color: var(--bridge-gold);
  text-decoration: none;
}

.hub-main {
  padding: 2rem;
  overflow-y: auto;
}

.hub-panel {
  display: none;
}

.hub-panel.active {
  display: block;
}

.card {
  background: var(--bridge-card);
  border: 1px solid var(--bridge-border);
  border-radius: var(--bridge-radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--bridge-shadow);
}

.card h2 {
  margin: 0 0 1rem;
  color: var(--bridge-navy);
}

.form-grid {
  display: grid;
  gap: 0.75rem;
}

.form-grid.two-up {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  font-weight: 600;
}

.form-grid input,
.form-grid textarea,
.form-grid select {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--bridge-border);
  border-radius: 6px;
  font: inherit;
}

.form-grid .full-width {
  grid-column: 1 / -1;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th,
.data-table td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--bridge-border);
}

.data-table th {
  background: #f9fafb;
  font-weight: 600;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.impact-card {
  background: linear-gradient(135deg, var(--bridge-green), var(--bridge-green-light));
  color: #fff;
  padding: 1rem;
  border-radius: var(--bridge-radius);
  text-align: center;
}

.impact-card .value {
  font-size: 1.75rem;
  font-weight: 800;
}

.impact-card .label {
  font-size: 0.8rem;
  opacity: 0.9;
}

.reese-greeting {
  background: linear-gradient(135deg, #ecfdf5, #f0fdf4);
  border: 1px solid #a7f3d0;
  border-radius: var(--bridge-radius);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.reese-greeting strong {
  color: var(--bridge-green);
}

.persona-appearance {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.persona-avatar {
  flex-shrink: 0;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--persona-accent, var(--bridge-green));
  box-shadow: var(--bridge-shadow);
}

.persona-avatar--photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.persona-avatar--lg { width: 72px; height: 72px; }
.persona-avatar--md { width: 56px; height: 56px; }

.persona-bubble {
  flex: 1;
  min-width: 0;
  padding: 1rem 1.15rem;
  border-radius: 16px 16px 16px 4px;
  background: var(--bridge-card);
  border: 1px solid #a7f3d0;
}

.persona-bubble__meta strong {
  display: block;
  color: var(--bridge-green);
}

.persona-bubble__title {
  display: block;
  font-size: 0.85rem;
  color: var(--bridge-muted);
  margin-bottom: 0.5rem;
}

.persona-bubble__text {
  margin: 0;
  color: var(--bridge-text);
  font-size: 0.95rem;
}

.output-preview {
  background: #f9fafb;
  border: 1px solid var(--bridge-border);
  border-radius: 8px;
  padding: 1rem;
  white-space: pre-wrap;
  font-family: ui-monospace, monospace;
  font-size: 0.85rem;
  max-height: 400px;
  overflow-y: auto;
}

.resource-list,
.course-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.resource-list li,
.course-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--bridge-border);
}

.chart-bars {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.chart-bar-row {
  display: grid;
  grid-template-columns: 120px 1fr 60px;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.chart-bar-track {
  background: #e5e7eb;
  border-radius: 4px;
  height: 20px;
  overflow: hidden;
}

.chart-bar-fill {
  background: var(--bridge-green);
  height: 100%;
  border-radius: 4px;
}

.brand-logo {
  width: clamp(36px, 6vw, 44px);
  height: clamp(36px, 6vw, 44px);
  border-radius: 8px;
  object-fit: contain;
  flex-shrink: 0;
}

.hero-banner {
  background: var(--bridge-navy);
  padding: 1rem 0 0.5rem;
  line-height: 0;
}

.hero-banner-image {
  display: block;
  width: min(100%, 760px);
  max-height: clamp(180px, 42vw, 360px);
  margin: 0 auto;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.auth-page {
  min-height: calc(100vh - 80px);
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}

.auth-card {
  width: min(420px, 100%);
  background: var(--bridge-card);
  border-radius: var(--bridge-radius);
  box-shadow: var(--bridge-shadow);
  padding: 2rem;
}

.auth-logo {
  display: block;
  margin: 0 auto 1rem;
  border-radius: 12px;
}

.auth-form label {
  display: block;
  margin-bottom: 1rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.auth-form input {
  width: 100%;
  padding: 0.6rem;
  margin-top: 0.25rem;
  border: 1px solid var(--bridge-border);
  border-radius: 6px;
}

.auth-links {
  margin-top: 1rem;
  text-align: center;
  font-size: 0.9rem;
}

.form-message.error {
  color: #b91c1c;
}

@media (max-width: 768px) {
  .hub-layout {
    grid-template-columns: 1fr;
  }

  .hub-sidebar {
    max-height: 200px;
  }
}