/* ============================================================
   Sertone Demo Pages — Extended Stylesheet
   Inherits: /style.css (colors, nav, footer, base)
   Colors: white #ffffff, dark slate #1e293b, teal #00b894
   ============================================================ */

/* ---------- Demo Hub Cards ---------- */
.demo-hub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.demo-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 2rem 1.75rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.demo-card:hover {
  border-color: rgba(0, 184, 148, 0.4);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
  color: inherit;
}

.demo-card-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 10px;
  background: rgba(0, 184, 148, 0.08);
  color: #00b894;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
}

.demo-card h3 {
  font-size: 1.2rem;
  color: #1e293b;
  margin: 0;
}

.demo-card p {
  color: #64748b;
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
  max-width: none;
}

.demo-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 0.5rem;
}

.demo-tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #00b894;
  background: rgba(0, 184, 148, 0.07);
  border: 1px solid rgba(0, 184, 148, 0.18);
  border-radius: 100px;
  padding: 0.2rem 0.65rem;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

/* ---------- Demo Page Layout ---------- */
.demo-page {
  padding-top: 5.5rem;
}

.demo-hero {
  padding: 4rem 0 3rem;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(0, 184, 148, 0.06) 0%, transparent 70%),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border-bottom: 1px solid #e2e8f0;
}

.demo-hero-breadcrumb {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-bottom: 1rem;
}

.demo-hero-breadcrumb a {
  color: #64748b;
}

.demo-hero-breadcrumb a:hover {
  color: #00b894;
}

.demo-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.demo-hero .value-prop {
  font-size: 1.15rem;
  color: #64748b;
  max-width: 44rem;
  line-height: 1.65;
}

/* ---------- Architecture Diagram ---------- */
.arch-diagram {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  overflow-x: auto;
}

.arch-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  min-width: 480px;
}

.arch-node {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1rem 1.25rem;
  min-width: 130px;
  text-align: center;
}

.arch-node.accent {
  background: rgba(0, 184, 148, 0.05);
  border-color: rgba(0, 184, 148, 0.3);
}

.arch-node .node-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #00b894;
  margin-bottom: 0.3rem;
}

.arch-node .node-desc {
  font-size: 0.82rem;
  color: #64748b;
  line-height: 1.4;
  max-width: none;
}

.arch-arrow {
  color: #cbd5e1;
  font-size: 1.4rem;
  padding: 0 0.6rem;
  flex-shrink: 0;
  user-select: none;
}

.arch-arrow-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 0.5rem;
  flex-shrink: 0;
}

.arch-arrow-label .arrow-line {
  font-size: 1.4rem;
  color: #cbd5e1;
  line-height: 1;
}

.arch-arrow-label .arrow-text {
  font-size: 0.68rem;
  color: #94a3b8;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  margin-top: 0.2rem;
}

/* ---------- Interactive Demo Area ---------- */
.demo-interactive {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.06);
}

.demo-interactive-header {
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.demo-interactive-header .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.demo-interactive-header .dot.red   { background: #fc6058; }
.demo-interactive-header .dot.amber { background: #fec02f; }
.demo-interactive-header .dot.green { background: #2bc940; }

.demo-interactive-header .header-title {
  margin-left: 0.5rem;
  font-size: 0.85rem;
  color: #64748b;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

.demo-interactive-body {
  padding: 1.5rem;
}

.demo-form-row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.demo-form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
  min-width: 160px;
}

.demo-form-field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: #475569;
  letter-spacing: 0.02em;
}

.demo-form-field input,
.demo-form-field select,
.demo-form-field textarea {
  padding: 0.625rem 0.875rem;
  font-size: 0.9rem;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #f8fafc;
  color: #1e293b;
  outline: none;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.demo-form-field textarea {
  font-size: 0.82rem;
  resize: vertical;
  min-height: 100px;
}

.demo-form-field input:focus,
.demo-form-field select:focus,
.demo-form-field textarea:focus {
  border-color: #00b894;
  box-shadow: 0 0 0 3px rgba(0, 184, 148, 0.1);
  background: #ffffff;
}

.btn-run {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #ffffff;
  background: #00b894;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s, box-shadow 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-run:hover {
  background: #00a381;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 184, 148, 0.25);
}

.btn-run:active {
  transform: translateY(0);
}

.btn-run.loading {
  opacity: 0.7;
  pointer-events: none;
}

.btn-run .run-icon {
  font-size: 0.8rem;
}

/* ---------- Demo Result ---------- */
.demo-result {
  background: #0f172a;
  border-radius: 10px;
  overflow: hidden;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.82rem;
  line-height: 1.7;
  color: #e2e8f0;
  min-height: 120px;
}

.demo-result-bar {
  background: #1e293b;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #334155;
}

.demo-result-bar .result-status {
  font-size: 0.75rem;
  color: #64748b;
}

.demo-result-bar .result-status.ok {
  color: #4ade80;
}

.demo-result-bar .result-status.error {
  color: #f87171;
}

.latency-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.65rem;
  background: rgba(0, 184, 148, 0.15);
  color: #34d399;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

.latency-badge.hidden {
  visibility: hidden;
}

.demo-result-body {
  padding: 1rem;
  overflow-x: auto;
  white-space: pre;
}

.demo-result-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  color: #475569;
  font-style: italic;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 0.875rem;
}

/* JSON syntax colors */
.json-key    { color: #93c5fd; }
.json-str    { color: #86efac; }
.json-num    { color: #fbbf24; }
.json-bool   { color: #c084fc; }
.json-null   { color: #94a3b8; }

/* ---------- Code Tabs ---------- */
.demo-code {
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  overflow: hidden;
}

.demo-code-tabs {
  display: flex;
  background: #f1f5f9;
  border-bottom: 1px solid #e2e8f0;
}

.demo-code-tab {
  padding: 0.65rem 1.25rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: #64748b;
  cursor: pointer;
  border: none;
  background: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

.demo-code-tab:hover {
  color: #1e293b;
}

.demo-code-tab.active {
  color: #00b894;
  border-bottom-color: #00b894;
  background: #ffffff;
}

.demo-code-panel {
  display: none;
  background: #0f172a;
  padding: 1.25rem 1.5rem;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.82rem;
  line-height: 1.75;
  color: #e2e8f0;
  overflow-x: auto;
  white-space: pre;
}

.demo-code-panel.active {
  display: block;
}

/* Code syntax in panels */
.c-comment  { color: #64748b; }
.c-keyword  { color: #c084fc; }
.c-string   { color: #86efac; }
.c-func     { color: #93c5fd; }
.c-num      { color: #fbbf24; }
.c-var      { color: #e2e8f0; }
.c-prompt   { color: #00b894; user-select: none; }
.c-url      { color: #38bdf8; }

/* ---------- "Replicate It" Section ---------- */
.demo-replicate {
  background: rgba(0, 184, 148, 0.03);
  border: 1px solid rgba(0, 184, 148, 0.18);
  border-radius: 14px;
  padding: 2.25rem 2rem;
}

.demo-replicate h3 {
  font-size: 1.3rem;
  color: #1e293b;
  margin-bottom: 0.5rem;
}

.demo-replicate .replicate-intro {
  color: #64748b;
  font-size: 0.95rem;
  margin-bottom: 1.75rem;
  max-width: 52rem;
}

.replicate-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: rstep;
}

.replicate-step {
  display: flex;
  gap: 1.25rem;
  position: relative;
  counter-increment: rstep;
  padding-bottom: 1.75rem;
}

.replicate-step:last-child {
  padding-bottom: 0;
}

.replicate-step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 1.375rem;
  top: 2.75rem;
  bottom: 0;
  width: 1px;
  background: rgba(0, 184, 148, 0.2);
}

.replicate-step-num {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: rgba(0, 184, 148, 0.08);
  color: #00b894;
  font-size: 1rem;
  font-weight: 700;
  border: 1px solid rgba(0, 184, 148, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.replicate-step-content h4 {
  font-size: 1rem;
  color: #1e293b;
  margin-bottom: 0.35rem;
  padding-top: 0.5rem;
}

.replicate-step-content p {
  color: #64748b;
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 0.5rem;
  max-width: 52rem;
}

.replicate-step-content .code-block {
  margin: 0.5rem 0;
  font-size: 0.82rem;
}

/* ---------- Node Info Callouts ---------- */
.node-callouts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.node-callout {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1.1rem 1rem;
  text-align: center;
}

.node-callout .nc-location {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #00b894;
  margin-bottom: 0.3rem;
}

.node-callout .nc-latency {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1e293b;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

.node-callout .nc-label {
  font-size: 0.78rem;
  color: #94a3b8;
  margin-top: 0.2rem;
}

/* ---------- Settlement Flow ---------- */
.settlement-flow {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 1.5rem 0;
}

.settlement-step {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  position: relative;
}

.settlement-step:not(:last-child) {
  border-bottom: 1px solid #f1f5f9;
}

.settlement-step-num {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: rgba(0, 184, 148, 0.08);
  color: #00b894;
  font-size: 0.85rem;
  font-weight: 700;
  border: 1px solid rgba(0, 184, 148, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.15rem;
}

.settlement-step-text h4 {
  font-size: 0.95rem;
  color: #1e293b;
  margin-bottom: 0.2rem;
}

.settlement-step-text p {
  font-size: 0.875rem;
  color: #64748b;
  line-height: 1.55;
  max-width: none;
}

/* ---------- Stream Log ---------- */
.stream-log {
  background: #0f172a;
  border-radius: 10px;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.82rem;
  color: #e2e8f0;
  overflow: hidden;
}

.stream-log-bar {
  background: #1e293b;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #334155;
  font-size: 0.75rem;
  color: #64748b;
}

.stream-log-bar .indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.stream-log-bar .indicator .dot-live {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4ade80;
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

.stream-log-body {
  padding: 1rem;
  min-height: 140px;
  max-height: 280px;
  overflow-y: auto;
}

.stream-log-line {
  display: block;
  line-height: 1.8;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.25s, transform 0.25s;
}

.stream-log-line.visible {
  opacity: 1;
  transform: translateY(0);
}

.stream-log-line .ts {
  color: #64748b;
  margin-right: 0.75rem;
  user-select: none;
}

.stream-log-line .ev {
  color: #00b894;
  margin-right: 0.5rem;
}

.stream-log-line .val {
  color: #fbbf24;
}

/* ---------- P2P Map ---------- */
.p2p-map {
  background: #0f172a;
  border-radius: 14px;
  padding: 2rem;
  position: relative;
  min-height: 220px;
  overflow: hidden;
}

.p2p-map svg {
  width: 100%;
  height: 180px;
}

/* ---------- Inline Info Box ---------- */
.info-box {
  background: rgba(0, 184, 148, 0.04);
  border: 1px solid rgba(0, 184, 148, 0.18);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0;
}

.info-box p {
  color: #475569;
  font-size: 0.9rem;
  line-height: 1.65;
  margin: 0;
  max-width: none;
}

.info-box strong {
  color: #1e293b;
}

/* ---------- Metric Row ---------- */
.metric-row {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin: 1.5rem 0;
}

.metric-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.metric-item .metric-val {
  font-size: 1.75rem;
  font-weight: 800;
  color: #1e293b;
  letter-spacing: -0.03em;
  font-family: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

.metric-item .metric-val span {
  color: #00b894;
  font-size: 1.1rem;
}

.metric-item .metric-label {
  font-size: 0.8rem;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

/* ---------- Protocol comparison table ---------- */
.protocol-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.protocol-table th {
  text-align: left;
  padding: 0.65rem 1rem;
  background: #f8fafc;
  color: #64748b;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-bottom: 1px solid #e2e8f0;
}

.protocol-table td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  color: #334155;
  vertical-align: top;
}

.protocol-table tr:last-child td {
  border-bottom: none;
}

.protocol-table tr:hover td {
  background: rgba(0, 184, 148, 0.02);
}

.protocol-table .check {
  color: #00b894;
  font-weight: 700;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .demo-hub-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .node-callouts {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .demo-hub-grid {
    grid-template-columns: 1fr;
  }
  .arch-flow {
    flex-direction: column;
    min-width: 0;
  }
  .arch-arrow {
    transform: rotate(90deg);
    padding: 0.3rem 0;
  }
  .arch-arrow-label .arrow-line {
    transform: rotate(90deg);
    display: block;
  }
  .node-callouts {
    grid-template-columns: repeat(2, 1fr);
  }
  .demo-hero h1 {
    font-size: 1.9rem;
  }
  .demo-form-row {
    flex-direction: column;
  }
  .demo-form-field {
    min-width: 0;
  }
  .metric-row {
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .node-callouts {
    grid-template-columns: 1fr 1fr;
  }
  .demo-interactive-body {
    padding: 1rem;
  }
}