/* ============================================================
   sections.css — Story, Numbers, Architecture, How It Works,
                  Projects, Timeline, Journal, Stack
   ============================================================ */

/* ---------- Story ---------- */
.story-header { margin-bottom: 64px; }
.story-header h2 { margin-bottom: 16px; }
.story-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 64px; align-items: start; }
.story-text p { margin-bottom: 16px; }
.story-versions { display: flex; flex-direction: column; }
.version-connector { display: flex; flex-direction: column; align-items: center; padding: 6px 0; }
.vc-line { width: 2px; height: 24px; background: var(--border); }
.vc-arrow { font-size: 1rem; color: var(--faint); }

/* ---------- Numbers / Stats ---------- */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* ---------- Architecture ---------- */
.arch-diagram { display: flex; flex-direction: column; gap: 16px; align-items: center; margin-bottom: 0; }
.arch-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; width: 100%; }
.arch-arrow { display: flex; align-items: center; color: var(--faint); font-size: 1.4rem; padding: 0 4px; }

.arch-node {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 20px; text-align: center; min-width: 120px;
  position: relative; cursor: default;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.arch-node:hover { border-color: var(--teal); box-shadow: var(--glow); transform: translateY(-3px) scale(1.03); }
.arch-node .node-icon  { font-size: 1.5rem; margin-bottom: 8px; }
.arch-node .node-label { font-size: 0.82rem; font-weight: 700; color: var(--text); }
.arch-node .node-sub   { font-size: 0.68rem; color: var(--muted); margin-top: 3px; }
.arch-node.primary {
  background: linear-gradient(135deg, rgba(45,212,191,0.12), rgba(56,189,248,0.06));
  border-color: rgba(45,212,191,0.4);
}
.worker-node { min-width: 110px; }

.node-tooltip {
  position: absolute; bottom: calc(100% + 10px); left: 50%; transform: translateX(-50%);
  background: var(--surface2); border: 1px solid var(--border);
  color: var(--muted); font-size: 0.72rem; padding: 8px 12px;
  border-radius: 8px; white-space: nowrap; max-width: 240px; white-space: normal;
  text-align: left; line-height: 1.5;
  opacity: 0; pointer-events: none; transition: opacity 0.2s; z-index: 10;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.arch-node:hover .node-tooltip, .paw-component:hover .node-tooltip { opacity: 1; }

.arch-connector-vert {
  width: 2px; height: 28px;
  background: linear-gradient(to bottom, var(--teal), rgba(45,212,191,0.2));
  margin: 0 auto; position: relative;
}
.connector-pulse {
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 6px; height: 6px; border-radius: 50%; background: var(--teal);
  animation: connectorPulse 2s ease-in-out infinite; margin-left: -2px;
}
@keyframes connectorPulse { 0%{ top: 0; opacity: 1; } 100%{ top: 22px; opacity: 0; } }

.arch-paw-box {
  background: var(--surface); border: 1px solid rgba(45,212,191,0.3);
  border-radius: var(--radius-lg); padding: 32px 24px 24px;
  width: 100%; max-width: 760px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  position: relative;
}
.arch-paw-label {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--navy2); padding: 0 14px;
  font-size: 0.62rem; font-weight: 800; letter-spacing: 2.5px;
  color: var(--teal); white-space: nowrap;
}
.paw-component {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px 12px; text-align: center;
  position: relative; cursor: default;
  transition: border-color 0.2s, transform 0.2s;
}
.paw-component:hover { border-color: rgba(45,212,191,0.4); transform: translateY(-2px); }
.paw-component .pc-icon  { font-size: 1.3rem; margin-bottom: 8px; }
.paw-component .pc-label { font-size: 0.78rem; font-weight: 700; color: var(--text); }
.paw-component .pc-desc  { font-size: 0.66rem; color: var(--muted); margin-top: 4px; line-height: 1.4; }

.tier-label {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--faint); margin-bottom: 16px;
}
.model-tiers { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; }
.tier-badge {
  padding: 7px 14px; border-radius: 100px; font-size: 0.72rem; font-weight: 700;
  border: 1px solid; font-family: var(--mono);
  display: inline-flex; flex-direction: column; align-items: center; gap: 2px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.tier-badge:hover { transform: translateY(-2px); }
.tier-badge span { font-size: 0.6rem; opacity: 0.7; font-weight: 400; }
.tier-micro    { background: rgba(167,139,250,0.1); border-color: rgba(167,139,250,0.4); color: var(--purple); }
.tier-small    { background: rgba(56,189,248,0.1);  border-color: rgba(56,189,248,0.4);  color: var(--blue); }
.tier-medium   { background: rgba(45,212,191,0.1);  border-color: rgba(45,212,191,0.4);  color: var(--teal); }
.tier-standard { background: rgba(52,211,153,0.1);  border-color: rgba(52,211,153,0.4);  color: var(--green); }
.tier-strong   { background: rgba(251,191,36,0.1);  border-color: rgba(251,191,36,0.4);  color: var(--amber); }
.tier-arrow    { color: var(--faint); display: flex; align-items: center; font-size: 0.9rem; }

/* ---------- How It Works ---------- */
.flow-steps { display: flex; flex-direction: column; max-width: 720px; margin: 0 auto 64px; }
.flow-step {
  display: flex; gap: 24px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px 28px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.flow-step:hover { border-color: rgba(45,212,191,0.25); box-shadow: var(--glow); }
.flow-step-num {
  flex-shrink: 0; font-family: var(--mono); font-size: 1.8rem; font-weight: 900;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1; padding-top: 2px;
}
.flow-step-content h4 { color: var(--text); margin-bottom: 6px; }
.flow-step-content p  { font-size: 0.9rem; }
.flow-connector { display: flex; justify-content: center; padding: 4px 0; }
.fc-line {
  width: 2px; height: 24px;
  background: linear-gradient(to bottom, var(--teal), rgba(45,212,191,0.2));
}

/* ---------- Projects ---------- */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }

/* ---------- Timeline ---------- */
.timeline { display: flex; flex-direction: column; max-width: 720px; margin: 0 auto; }
.tl-event { display: grid; grid-template-columns: 80px 28px 1fr; gap: 20px; }
.tl-date {
  text-align: right; font-family: var(--mono); font-size: 0.72rem;
  font-weight: 700; color: var(--teal); padding-top: 2px;
}
.tl-marker-wrap { display: flex; flex-direction: column; align-items: center; }
.tl-dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--surface2); border: 2px solid var(--teal);
  flex-shrink: 0; z-index: 1; margin-top: 2px;
  transition: background 0.2s, box-shadow 0.2s;
}
.tl-dot-bright { background: var(--teal); box-shadow: 0 0 12px var(--teal); }
.tl-line {
  width: 2px; flex: 1;
  background: linear-gradient(to bottom, rgba(45,212,191,0.3), rgba(45,212,191,0.05));
  min-height: 24px;
}
.tl-body { padding: 0 0 40px; }
.tl-body h4 { color: var(--text); font-size: 1rem; margin-bottom: 6px; }
.tl-body p  { font-size: 0.88rem; color: var(--muted); margin-bottom: 12px; }
.highlight-body h4 { color: var(--teal); }
.tl-chip {
  display: inline-block; padding: 3px 10px; border-radius: 100px;
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.5px;
  background: var(--surface2); border: 1px solid var(--border); color: var(--muted);
}
.tl-chip-bright {
  background: rgba(45,212,191,0.1); border-color: rgba(45,212,191,0.4); color: var(--teal);
}
.tl-event:hover .tl-dot { background: var(--teal); box-shadow: 0 0 8px var(--teal); }

/* ---------- Journal ---------- */
.journal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }

/* ---------- Stack ---------- */
.stack-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; }
.stack-item {
  padding: 22px 16px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border);
  text-align: center; transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.stack-item:hover { border-color: var(--teal); transform: translateY(-3px); box-shadow: var(--glow); }
.stack-item .si-icon { font-size: 2rem; margin-bottom: 10px; }
.stack-item .si-name { font-size: 0.9rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.stack-item .si-desc { font-size: 0.72rem; color: var(--muted); }