/* ==========================================================================
   Interactive Roadmaps (Founder & Architecture Tech Trees)
   ========================================================================== */

.roadmap-shell { background: var(--bg); }

.roadmap-container {
  padding-block: clamp(40px, 6vw, 68px) 80px;
}

.roadmap-head {
  max-width: 900px;
  margin-bottom: 30px;
}

.roadmap-eyebrow {
  display: block;
  font: 700 0.8rem var(--font-text);
  color: var(--accent-text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.roadmap-title {
  font-size: clamp(2.3rem, 5vw, 3.7rem);
  letter-spacing: -0.03em;
  line-height: 1.06;
  color: var(--ink);
  margin: 0;
}

.roadmap-lead {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-top: 16px;
  max-width: 72ch;
}

.roadmap-track-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}

.roadmap-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 10px;
  color: var(--muted);
  min-height: 42px;
  padding: 9px 16px;
  cursor: pointer;
  font: 600 0.9rem var(--font-text);
  transition: all 0.16s ease;
}

.roadmap-tab-btn:hover {
  color: var(--ink);
  border-color: var(--line-strong);
  background: var(--surface-2);
}

.roadmap-tab-btn.is-active {
  background: var(--accent);
  color: var(--accent-ink, #ffffff);
  border-color: var(--accent);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--accent) 30%, transparent);
}

.roadmap-section {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  padding: clamp(20px, 3.5vw, 36px);
  margin-top: 24px;
  box-shadow: var(--card-shadow);
  color: var(--ink);
}

.roadmap-section-header {
  margin-bottom: 2rem;
}

.roadmap-badge-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.roadmap-badge {
  font: 700 0.72rem var(--font-text);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--accent-text);
  border: 1px solid var(--line);
}

.roadmap-badge.ai {
  background: var(--accent-soft);
  color: var(--accent-text);
  border-color: color-mix(in srgb, var(--accent) 30%, transparent);
}

.roadmap-badge.saas {
  background: var(--amber-bg);
  color: var(--amber);
  border-color: var(--amber-line);
}

.roadmap-length {
  font: 500 0.82rem var(--font-text);
  color: var(--muted);
}

.roadmap-section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 0.5rem;
}

.roadmap-section-desc {
  font-size: 1rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.6;
}

/* Timeline & Phases */
.roadmap-timeline {
  display: grid;
  gap: 2.5rem;
  position: relative;
}

.roadmap-phase {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

@media (max-width: 860px) {
  .roadmap-phase {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

.phase-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.phase-number {
  font: 700 0.75rem var(--font-mono);
  color: var(--accent-text);
  letter-spacing: 0.06em;
}

.phase-name {
  font: 700 1.2rem var(--font-text);
  color: var(--ink);
  margin: 0;
}

.phase-pill {
  align-self: flex-start;
  font: 600 0.68rem var(--font-text);
  text-transform: uppercase;
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--line);
  padding: 2px 8px;
  border-radius: 999px;
  margin-top: 6px;
}

.phase-nodes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.roadmap-node-card {
  display: flex;
  flex-direction: column;
  padding: 20px 22px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-m, 12px);
  text-decoration: none;
  transition: all 0.2s ease;
}

.roadmap-node-card:hover {
  background: var(--surface);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
}

.node-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.node-badge {
  font: 700 0.68rem var(--font-text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 7px;
  border-radius: 999px;
}

.node-badge.core {
  background: var(--accent-soft);
  color: var(--accent-text);
}

.node-badge.architecture {
  background: var(--sky-bg);
  color: var(--sky);
}

.node-badge.safety {
  background: var(--amber-bg);
  color: var(--amber);
}

.node-badge.evals {
  background: var(--olive-bg);
  color: var(--olive);
}

.node-badge.saas {
  background: var(--kraft-bg);
  color: var(--kraft);
}

.node-arrow {
  font: 600 0.78rem var(--font-text);
  color: var(--accent-text);
}

.node-title {
  font: 700 1.05rem var(--font-text);
  color: var(--ink);
  margin: 0 0 6px;
}

.node-desc {
  font: 400 0.88rem/1.55 var(--font-text);
  color: var(--muted);
  margin: 0;
}

@media (max-width: 700px) {
  .roadmap-container {
    padding-block: 28px 48px !important;
  }
  .roadmap-head {
    margin-bottom: 20px !important;
  }
  .roadmap-title {
    font-size: clamp(1.85rem, 7vw, 2.5rem) !important;
  }
  .roadmap-lead {
    font-size: 0.94rem !important;
    line-height: 1.6 !important;
    margin-top: 10px !important;
  }
  .roadmap-track-tabs {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    margin-top: 18px !important;
    gap: 6px !important;
  }
  .roadmap-tab-btn {
    justify-content: flex-start;
    min-height: 38px !important;
    padding: 7px 14px !important;
    font-size: 0.85rem !important;
  }
  .roadmap-section {
    padding: 14px 16px !important;
    margin-top: 16px !important;
    border-radius: 14px !important;
  }
  .roadmap-section-header {
    margin-bottom: 1.25rem !important;
  }
  .roadmap-section-title {
    font-size: 1.35rem !important;
  }
  .roadmap-section-desc {
    font-size: 0.9rem !important;
  }
  .roadmap-timeline {
    gap: 1.5rem !important;
  }
  .roadmap-phase {
    grid-template-columns: 1fr !important;
    gap: 0.75rem !important;
    padding-top: 1rem !important;
  }
  .phase-name {
    font-size: 1.05rem !important;
  }
  .phase-nodes {
    grid-template-columns: 1fr !important;
    gap: 8px !important;
  }
  .roadmap-node-card {
    padding: 12px 14px !important;
    border-radius: 10px !important;
  }
  .node-title {
    font-size: 0.96rem !important;
  }
  .node-desc {
    font-size: 0.84rem !important;
    line-height: 1.45 !important;
  }
}