/* EZ AI — public student showcase (marketing) */
:root {
  --brand: #7c3aed;
  --brand-hi: #a78bfa;
  --bg: #0a0a0f;
  --bg-2: #111118;
  --bg-3: #18181f;
  --border: rgba(255, 255, 255, 0.08);
  --tx: #f1f0f5;
  --tx-2: #9493a8;
  --tx-3: #5a5970;
  --font: "Heebo", system-ui, sans-serif;
  --font-d: "Rubik", "Heebo", system-ui, sans-serif;
  --r: 12px;
  --r-lg: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--tx);
  line-height: 1.55;
  min-height: 100vh;
}

a {
  color: var(--brand-hi);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.sc-demo-banner {
  background: linear-gradient(90deg, rgba(124, 58, 237, 0.2), rgba(6, 182, 212, 0.12));
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  text-align: center;
  font-size: 13px;
  color: var(--tx-2);
}

.sc-demo-banner strong {
  color: var(--tx);
}

.sc-top {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.sc-logo {
  font-family: var(--font-d);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--tx);
}

.sc-logo span {
  color: var(--brand-hi);
}

.sc-nav a {
  font-size: 14px;
  margin-inline-start: 16px;
}

.sc-hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.sc-hero h1 {
  font-family: var(--font-d);
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 900;
  margin: 0 0 12px;
  letter-spacing: -0.03em;
}

.sc-hero p {
  margin: 0;
  max-width: 640px;
  color: var(--tx-2);
  font-size: 17px;
}

.sc-grid {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px 64px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.sc-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, transform 0.2s;
}

.sc-card:hover {
  border-color: rgba(124, 58, 237, 0.45);
  transform: translateY(-2px);
}

.sc-card-accent {
  height: 4px;
}

.sc-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.sc-card-meta {
  font-size: 12px;
  color: var(--tx-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.sc-card h2 {
  font-family: var(--font-d);
  font-size: 18px;
  margin: 0 0 8px;
}

.sc-card p {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--tx-2);
  flex: 1;
}

.sc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.sc-tag {
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--tx-2);
}

.sc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  border: none;
  cursor: pointer;
  background: var(--brand);
  color: #fff;
  text-decoration: none;
}

.sc-btn:hover {
  filter: brightness(1.08);
  text-decoration: none;
}

.sc-btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--tx);
}

.sc-foot {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--tx-3);
  text-align: center;
}

/* Project pages */
.sc-project-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.sc-project-wrap h1 {
  font-family: var(--font-d);
  font-size: clamp(26px, 4vw, 34px);
  margin: 0 0 8px;
}

.sc-project-meta {
  font-size: 14px;
  color: var(--tx-2);
  margin-bottom: 24px;
}

.sc-project-content {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
}

.sc-project-content h2 {
  font-size: 18px;
  margin: 24px 0 8px;
}

.sc-project-content h2:first-child {
  margin-top: 0;
}

.sc-project-content ul {
  padding-inline-start: 20px;
  color: var(--tx-2);
}

.sc-project-content li {
  margin-bottom: 8px;
}

.sc-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin: 20px 0;
}

.sc-flow-node {
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  font-size: 14px;
}

.sc-flow-arrow {
  color: var(--tx-3);
  font-size: 18px;
}

.sc-checklist label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-size: 15px;
}

.sc-checklist input {
  margin-top: 4px;
  accent-color: var(--brand);
}

.sc-loading,
.sc-error {
  text-align: center;
  padding: 48px 20px;
  color: var(--tx-2);
}

/* Project footer + CTA */
.sc-project-foot {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.sc-project-foot p {
  margin: 0;
  font-size: 13px;
  color: var(--tx-3);
}

.sc-lesson-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--tx-2);
  margin-bottom: 12px;
}

/* Assistant operating spec (Prompt capstone) */
.sc-spec {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sc-spec-block {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 20px 22px;
  border-inline-start: 4px solid var(--brand-hi);
}

.sc-spec-block h3 {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--brand-hi);
}

.sc-spec-block p,
.sc-spec-block ul {
  margin: 0;
  font-size: 15px;
  color: var(--tx-2);
  line-height: 1.55;
}

.sc-spec-block ul {
  padding-inline-start: 18px;
}

.sc-spec-block li {
  margin-bottom: 6px;
}

.sc-spec-block--refusal {
  border-inline-start-color: #f59e0b;
}

.sc-spec-block--refusal h3 {
  color: #fcd34d;
}

.sc-spec-preview {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 16px;
  margin-top: 8px;
  font-size: 14px;
  color: var(--tx);
}

.sc-spec-preview .sc-spec-user {
  color: var(--brand-hi);
  font-weight: 600;
  margin-bottom: 8px;
}

/* Vibe — full site embed */
.sc-site-frame {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.sc-site-frame .site-inner {
  padding: 0;
}

/* Flow Lab showcase (mirrors flow.css tokens) */
.sc-fl {
  --fl-trigger: #22c55e;
  --fl-logic: #f59e0b;
  --fl-action: #8b5cf6;
  --fl-wire: #a78bfa;
}

.sc-fl-wrap {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.sc-fl-dev {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: linear-gradient(120deg, rgba(124, 58, 237, 0.2), rgba(6, 182, 212, 0.1));
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--tx-2);
}

.sc-fl-dev-badge {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, #7c3aed, #06b6d4);
}

.sc-fl-body {
  display: grid;
  grid-template-columns: 1fr minmax(180px, 220px);
  gap: 0;
  min-height: 280px;
}

.sc-fl-canvas {
  position: relative;
  padding: 24px 16px;
  background: rgba(10, 12, 22, 0.92);
  background-image: radial-gradient(circle at 1px 1px, rgba(139, 92, 246, 0.07) 1px, transparent 0);
  background-size: 20px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 4px;
}

.sc-fl-node {
  display: flex;
  min-width: 130px;
  max-width: 150px;
  border-radius: 10px;
  background: rgba(18, 20, 32, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.sc-fl-node.is-active {
  box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.6), 0 0 20px rgba(139, 92, 246, 0.25);
}

.sc-fl-node-accent {
  width: 4px;
  flex-shrink: 0;
}

.sc-fl-node--trigger .sc-fl-node-accent { background: var(--fl-trigger); }
.sc-fl-node--logic .sc-fl-node-accent { background: var(--fl-logic); }
.sc-fl-node--action .sc-fl-node-accent { background: var(--fl-action); }

.sc-fl-node-body {
  padding: 10px 12px;
  flex: 1;
  min-width: 0;
}

.sc-fl-node-kind {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--tx-3);
  margin-bottom: 4px;
}

.sc-fl-node-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--tx);
  line-height: 1.3;
}

.sc-fl-node-sub {
  font-size: 11px;
  color: var(--tx-2);
  margin-top: 4px;
}

.sc-fl-arrow {
  color: var(--fl-wire);
  font-size: 20px;
  font-weight: 700;
  flex-shrink: 0;
}

.sc-fl-trace {
  border-inline-start: 1px solid var(--border);
  background: var(--bg-3);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sc-fl-trace h3 {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--tx-3);
}

.sc-fl-trace-line {
  font-size: 12px;
  font-family: ui-monospace, monospace;
  padding: 8px 10px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.25);
  color: var(--tx-2);
  border-inline-start: 3px solid transparent;
}

.sc-fl-trace-line.is-ok {
  border-inline-start-color: var(--fl-trigger);
  color: #86efac;
}

.sc-fl-trace-line.is-run {
  border-inline-start-color: var(--fl-action);
  color: #c4b5fd;
}

/* ML classifier (Teachable Machine style) */
.sc-ml {
  display: grid;
  gap: 20px;
}

.sc-ml-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}

.sc-ml-class {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 14px;
}

.sc-ml-class h3 {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 700;
}

.sc-ml-class--a h3 { color: #34d399; }
.sc-ml-class--b h3 { color: #f87171; }

.sc-ml-samples {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.sc-ml-sample {
  aspect-ratio: 1;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px dashed rgba(255, 255, 255, 0.12);
  display: grid;
  place-items: center;
  font-size: 22px;
}

.sc-ml-predict {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 20px;
}

.sc-ml-predict-head {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.sc-ml-webcam {
  width: 120px;
  height: 120px;
  border-radius: 12px;
  background: linear-gradient(135deg, #1e293b, #334155);
  display: grid;
  place-items: center;
  font-size: 48px;
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.sc-ml-bars {
  flex: 1;
  min-width: 180px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sc-ml-bar-row {
  display: grid;
  grid-template-columns: 80px 1fr 40px;
  gap: 10px;
  align-items: center;
  font-size: 13px;
}

.sc-ml-bar-track {
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.sc-ml-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.3s;
}

.sc-ml-bar-fill--recycle { background: #34d399; width: 78%; }
.sc-ml-bar-fill--trash { background: #f87171; width: 22%; }

.sc-ml-ethics {
  font-size: 13px;
  color: var(--tx-2);
  padding: 12px 14px;
  border-radius: var(--r);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

@media (max-width: 720px) {
  .sc-fl-body {
    grid-template-columns: 1fr;
  }

  .sc-fl-trace {
    border-inline-start: none;
    border-top: 1px solid var(--border);
  }

  .sc-fl-canvas {
    flex-direction: column;
  }

  .sc-fl-arrow {
    transform: rotate(90deg);
  }
}

@media (max-width: 600px) {
  .sc-top {
    flex-direction: column;
    align-items: flex-start;
  }
}