:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: #101c2d;
  --panel-strong: #16253b;
  --border: #263854;
  --text: #eff5ff;
  --muted: #9eb0cb;
  --brand: #61a8ff;
  --brand-soft: rgba(97, 168, 255, 0.14);
  --success: #34d399;
  --danger: #f87171;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: linear-gradient(180deg, #07111f 0%, #0d1728 100%);
  color: var(--text);
}

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

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.container--narrow {
  width: min(640px, calc(100% - 2rem));
}

.page {
  min-height: calc(100vh - 130px);
}

.shell-header,
.shell-footer {
  border-bottom: 1px solid var(--border);
  background: rgba(7, 17, 31, 0.86);
  backdrop-filter: blur(10px);
}

.shell-footer {
  border-top: 1px solid var(--border);
  border-bottom: 0;
  padding: 1rem 0;
}

.shell-header__inner,
.shell-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  font-weight: 700;
  font-size: 1.2rem;
}

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

.hero,
.section {
  padding: 4rem 0;
}

.section--muted {
  background: rgba(255, 255, 255, 0.02);
}

.hero__grid,
.grid {
  display: grid;
  gap: 1.25rem;
}

.grid--cards {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid--two {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

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

.grid--four {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.hero__copy,
.muted {
  color: var(--muted);
}

.hero__actions,
.product-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.card,
.metric-card,
.mini-stat,
.scan-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.25rem;
}

.card--highlight {
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
}

.metric-card strong,
.mini-stat strong,
.price {
  display: block;
  margin-top: 0.35rem;
  font-size: 1.4rem;
}

.section-heading {
  margin-bottom: 1.5rem;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

.button,
.link-button {
  border: 0;
  border-radius: 12px;
  padding: 0.8rem 1.1rem;
  font: inherit;
  cursor: pointer;
  background: var(--brand);
  color: #03101f;
  font-weight: 700;
}

.button--ghost,
.link-button {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.button--small {
  padding: 0.55rem 0.85rem;
}

.form {
  display: grid;
  gap: 1rem;
}

.form label {
  display: grid;
  gap: 0.45rem;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #091424;
  color: var(--text);
  padding: 0.85rem 0.95rem;
  font: inherit;
}

.alert {
  margin-bottom: 1rem;
  border-radius: 12px;
  padding: 0.9rem 1rem;
}

.alert--error {
  background: rgba(248, 113, 113, 0.12);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: #ffd5d5;
}

.alert--success {
  background: rgba(52, 211, 153, 0.12);
  border: 1px solid rgba(52, 211, 153, 0.3);
  color: #d2ffee;
}

.list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.65rem;
}

.product-row,
.card__header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 1rem;
}

.card-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.product-row + .product-row,
.stack-item + .stack-item,
.scan-card + .scan-card {
  margin-top: 1rem;
}

.badge {
  display: inline-flex;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--brand-soft);
  color: var(--text);
  font-size: 0.85rem;
}

.badge--success {
  background: rgba(52, 211, 153, 0.12);
  border-color: rgba(52, 211, 153, 0.35);
  color: #c9fae7;
}

.compact-grid {
  margin-bottom: 1rem;
}

canvas {
  margin-top: 1rem;
  width: 100%;
  min-height: 280px;
}

@media (max-width: 768px) {
  .shell-header__inner,
  .shell-footer__inner,
  .card__header,
  .product-row {
    flex-direction: column;
    align-items: stretch;
  }

  .nav {
    flex-wrap: wrap;
  }
}