:root {
  --color-brand-50: #eef2ff;
  --color-brand-100: #e0e7ff;
  --color-brand-500: #6366f1;
  --color-brand-600: #4f46e5;
  --color-brand-700: #4338ca;
  --color-ink-950: #17172a;
  --color-ink-800: #2b2c3f;
  --color-ink-600: #626579;
  --color-ink-500: #7a7d91;
  --color-surface-canvas: #f6f7fb;
  --color-surface-1: #ffffff;
  --color-surface-2: #f1f3f8;
  --color-header: #f6821f;
  --color-footer: #fff3e6;
  --color-border: #e1e4ec;
  --color-border-strong: #cfd3df;
  --color-success: #137a4b;
  --color-success-soft: #e8f7ef;
  --color-warning: #9a5a08;
  --color-warning-soft: #fff4da;

  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  --radius-sm: .625rem;
  --radius-md: .875rem;
  --radius-lg: 1.125rem;
  --radius-xl: 1.5rem;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(24, 28, 50, .05), 0 1px 6px rgba(24, 28, 50, .04);
  --shadow-md: 0 12px 32px rgba(24, 28, 50, .10);

  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --text-xs: .75rem;
  --text-sm: .875rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.875rem;

  --header-height: 4.25rem;
  --bottom-nav-height: 5rem;
  --rail-width: 5.25rem;
  --sidebar-width: 15rem;
  --content-max: 76rem;

  --motion-fast: 140ms;
  --motion-base: 220ms;
  --focus-ring: 0 0 0 3px rgba(99, 102, 241, .28);
}

* { box-sizing: border-box; }

html {
  min-width: 20rem;
  background: var(--color-surface-canvas);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  color: var(--color-ink-950);
  background:
    radial-gradient(circle at 92% 8%, rgba(99, 102, 241, .08), transparent 22rem),
    var(--color-surface-canvas);
  font-family: var(--font-sans);
  line-height: 1.5;
}

button, input, textarea, select { font: inherit; }
button { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

button:focus-visible,
a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  left: var(--space-4);
  top: var(--space-4);
  padding: .65rem .85rem;
  border-radius: var(--radius-sm);
  background: var(--color-ink-950);
  color: #fff;
  transform: translateY(-180%);
  transition: transform var(--motion-fast) ease;
}

.skip-link:focus { transform: translateY(0); }

.app-shell {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-top: calc(var(--header-height) + env(safe-area-inset-top));
  padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom));
}

.app-header {
  --focus-ring: 0 0 0 3px var(--color-ink-950);
  position: fixed;
  z-index: 40;
  inset: 0 0 auto 0;
  height: calc(var(--header-height) + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) var(--space-4) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  border-bottom: 1px solid rgba(225, 228, 236, .82);
  background: var(--color-header);
  backdrop-filter: blur(18px);
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-sm);
}

.brand img {
  width: 3rem;
  height: 2.125rem;
  flex: 0 0 auto;
  object-fit: contain;
  outline: 1px solid var(--color-ink-950);
  outline-offset: 2px;
}

.brand-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-copy strong {
  font-size: 1rem;
  letter-spacing: -.015em;
}

.brand-copy small {
  display: none;
  margin-top: .25rem;
  color: var(--color-ink-800);
  font-size: .68rem;
  white-space: nowrap;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.prototype-badge {
  display: none;
  padding: .4rem .65rem;
  border: 1px solid var(--color-brand-100);
  border-radius: var(--radius-pill);
  color: var(--color-brand-700);
  background: var(--color-brand-50);
  font-size: var(--text-xs);
  font-weight: 700;
}

.icon-button,
.avatar-button {
  min-width: 2.75rem;
  min-height: 2.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: inline-grid;
  place-items: center;
  background: var(--color-surface-1);
  cursor: pointer;
  transition: background var(--motion-fast) ease, border-color var(--motion-fast) ease;
}

.icon-button:hover { background: var(--color-surface-2); }

.avatar-button {
  border-radius: var(--radius-pill);
  background: var(--color-ink-950);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 800;
}

.side-nav { display: none; }

.app-main { min-width: 0; flex: 1; }

.app-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
  color: var(--color-ink-800);
  background: var(--color-footer);
  font-size: var(--text-xs);
  text-align: center;
}

.app-footer p { margin: 0; }

.content-wrap {
  width: min(100%, var(--content-max));
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-10);
}

.page-heading {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.eyebrow,
.section-kicker {
  margin: 0 0 var(--space-2);
  color: var(--color-brand-700);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.page-heading h1 {
  max-width: 22ch;
  margin: 0;
  font-size: var(--text-xl);
  line-height: 1.1;
  letter-spacing: -.035em;
}

.page-description {
  max-width: 46rem;
  margin: var(--space-3) 0 0;
  color: var(--color-ink-600);
  font-size: var(--text-sm);
}

.button {
  min-height: 2.75rem;
  padding: .7rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: 750;
  font-size: var(--text-sm);
  cursor: pointer;
  transition:
    transform var(--motion-fast) ease,
    background var(--motion-fast) ease,
    border-color var(--motion-fast) ease;
}

.button:active { transform: translateY(1px); }

.button-primary {
  justify-self: start;
  color: #fff;
  background: var(--color-brand-600);
}

.button-primary:hover { background: var(--color-brand-700); }

.button-secondary {
  border-color: var(--color-border);
  background: var(--color-surface-1);
}

.button-secondary:hover,
.button-quiet:hover { background: var(--color-surface-2); }

.button-quiet {
  border-color: transparent;
  background: transparent;
  color: var(--color-ink-600);
}

.metric-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.metric-card {
  min-width: 0;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--color-surface-1);
  box-shadow: var(--shadow-sm);
}

.metric-card p,
.metric-card small {
  margin: 0;
  color: var(--color-ink-600);
  font-size: var(--text-xs);
}

.metric-card strong {
  display: block;
  margin: .08rem 0;
  font-size: 1.5rem;
  line-height: 1.1;
  letter-spacing: -.03em;
}

.metric-icon {
  width: 2.6rem;
  height: 2.6rem;
  flex: 0 0 auto;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-weight: 900;
}

.metric-icon-indigo { color: var(--color-brand-700); background: var(--color-brand-50); }
.metric-icon-green { color: var(--color-success); background: var(--color-success-soft); }
.metric-icon-amber { color: var(--color-warning); background: var(--color-warning-soft); }

.surface-panel {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface-1);
  box-shadow: var(--shadow-sm);
}

.section-heading {
  padding: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.section-heading h2 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: -.015em;
}

.section-kicker {
  margin-bottom: .2rem;
  color: var(--color-ink-500);
  font-size: .68rem;
}

.desktop-only-action { display: none; }

.resource-list { display: grid; }

.resource-card {
  padding: var(--space-5);
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.resource-card:last-child { border-bottom: 0; }

.resource-mark {
  width: 2.7rem;
  height: 2.7rem;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-weight: 850;
}

.resource-mark-purple { color: #5b21b6; background: #f0e7ff; }
.resource-mark-blue { color: #075985; background: #e0f2fe; }
.resource-mark-orange { color: #9a3412; background: #ffedd5; }

.resource-copy { min-width: 0; }

.resource-meta {
  margin-bottom: var(--space-2);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-ink-500);
  font-size: var(--text-xs);
}

.status-pill {
  padding: .25rem .5rem;
  border-radius: var(--radius-pill);
  background: var(--color-surface-2);
  color: var(--color-ink-600);
  font-weight: 750;
}

.status-live { color: var(--color-success); background: var(--color-success-soft); }
.status-warning { color: var(--color-warning); background: var(--color-warning-soft); }

.resource-copy h3 {
  margin: 0;
  font-size: var(--text-md);
  letter-spacing: -.01em;
}

.resource-copy p {
  margin: var(--space-2) 0 0;
  color: var(--color-ink-600);
  font-size: var(--text-sm);
}

.resource-action {
  grid-column: 2;
  justify-self: start;
  min-width: 5rem;
}

.foundation-note {
  margin-top: var(--space-5);
  padding: var(--space-4);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  color: var(--color-ink-600);
  background: rgba(255, 255, 255, .55);
  font-size: var(--text-sm);
}

.foundation-note strong { color: var(--color-ink-800); }
.foundation-note p { margin: .2rem 0 0; }

.note-icon {
  width: 1.8rem;
  height: 1.8rem;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  color: var(--color-brand-700);
  background: var(--color-brand-50);
  font-weight: 800;
}

.bottom-nav {
  position: fixed;
  z-index: 50;
  inset: auto 0 0 0;
  min-height: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom));
  padding: .45rem .3rem env(safe-area-inset-bottom);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  align-items: end;
  border-top: 1px solid rgba(225, 228, 236, .9);
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(18px);
}

.bottom-nav-item {
  min-width: 0;
  min-height: 3.9rem;
  border: 0;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .2rem;
  background: transparent;
  color: var(--color-ink-500);
  font-size: .67rem;
  font-weight: 700;
  cursor: pointer;
}

.bottom-nav-item svg { width: 1.3rem; height: 1.3rem; }

.bottom-nav-item.is-active { color: var(--color-brand-700); }

.bottom-nav-create { color: var(--color-ink-800); }

.create-orb {
  width: 2.35rem;
  height: 2.35rem;
  margin-top: -.85rem;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--color-brand-600);
  box-shadow: 0 7px 18px rgba(79, 70, 229, .28);
}

.sheet-backdrop {
  position: fixed;
  z-index: 79;
  inset: 0;
  background: rgba(23, 23, 42, .35);
  backdrop-filter: blur(2px);
}

.mobile-sheet {
  position: fixed;
  z-index: 80;
  inset: auto var(--space-2) calc(var(--space-2) + env(safe-area-inset-bottom)) var(--space-2);
  padding: var(--space-3) var(--space-4) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: 1.4rem;
  background: var(--color-surface-1);
  box-shadow: var(--shadow-md);
}

.sheet-handle {
  width: 2.5rem;
  height: .28rem;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-pill);
  background: var(--color-border-strong);
}

.sheet-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.sheet-heading h2 {
  margin: 0;
  font-size: 1.15rem;
}

.sheet-action {
  width: 100%;
  min-height: 4rem;
  padding: var(--space-3);
  border: 0;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-align: left;
  background: transparent;
  cursor: pointer;
}

.sheet-action:hover { background: var(--color-surface-2); }

.sheet-action-icon {
  width: 2.4rem;
  height: 2.4rem;
  flex: 0 0 auto;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  color: var(--color-brand-700);
  background: var(--color-brand-50);
  font-weight: 800;
}

.sheet-action span:last-child {
  display: flex;
  flex-direction: column;
  gap: .1rem;
}

.sheet-action small {
  color: var(--color-ink-600);
  font-size: var(--text-xs);
}

.toast {
  position: fixed;
  z-index: 100;
  left: 50%;
  bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom) + var(--space-4));
  width: min(calc(100% - 2rem), 28rem);
  padding: .8rem 1rem;
  border-radius: var(--radius-md);
  transform: translateX(-50%);
  color: #fff;
  background: var(--color-ink-950);
  box-shadow: var(--shadow-md);
  font-size: var(--text-sm);
}

[hidden] { display: none !important; }

@media (min-width: 36rem) {
  .brand-copy small,
  .prototype-badge { display: inline; }

  .metric-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 48rem) {
  :root {
    --text-xl: 2.125rem;
  }

  .app-shell {
    padding-left: var(--rail-width);
    padding-bottom: 0;
  }

  .app-header {
    padding-left: calc(var(--rail-width) + var(--space-5));
    padding-right: var(--space-5);
  }

  .side-nav {
    position: fixed;
    z-index: 45;
    inset: calc(var(--header-height) + env(safe-area-inset-top)) auto 0 0;
    width: var(--rail-width);
    padding: var(--space-4) var(--space-2);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-right: 1px solid var(--color-border);
    background: rgba(255, 255, 255, .9);
  }

  .nav-primary,
  .nav-secondary {
    display: grid;
    gap: var(--space-2);
  }

  .nav-item {
    min-height: 3.75rem;
    padding: .55rem;
    border: 0;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .28rem;
    color: var(--color-ink-500);
    background: transparent;
    font-size: .66rem;
    font-weight: 750;
    cursor: pointer;
  }

  .nav-item:hover { background: var(--color-surface-2); }

  .nav-item.is-active {
    color: var(--color-brand-700);
    background: var(--color-brand-50);
  }

  .nav-item-accent {
    color: #fff;
    background: var(--color-brand-600);
  }

  .nav-item-accent:hover {
    color: #fff;
    background: var(--color-brand-700);
  }

  .content-wrap {
    padding: var(--space-8) var(--space-8) var(--space-12);
  }

  .page-heading {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    margin-bottom: var(--space-8);
  }

  .page-action { justify-self: end; }

  .desktop-only-action { display: inline-flex; }

  .resource-card {
    grid-template-columns: auto 1fr auto;
    align-items: center;
  }

  .resource-action {
    grid-column: 3;
    justify-self: end;
  }

  .bottom-nav { display: none; }
  .toast { bottom: var(--space-6); }
}

@media (min-width: 68.75rem) {
  :root {
    --text-xl: 2.5rem;
  }

  .app-shell { padding-left: var(--sidebar-width); }

  .app-header {
    padding-left: calc(var(--sidebar-width) + var(--space-8));
    padding-right: var(--space-8);
  }

  .side-nav {
    width: var(--sidebar-width);
    padding: var(--space-5) var(--space-4);
  }

  .nav-item {
    min-height: 3rem;
    padding: .65rem .85rem;
    flex-direction: row;
    justify-content: flex-start;
    gap: var(--space-3);
    font-size: var(--text-sm);
  }

  .nav-item svg {
    width: 1.18rem;
    height: 1.18rem;
  }

  .content-wrap {
    padding-left: var(--space-10);
    padding-right: var(--space-10);
  }

  .metric-card { padding: var(--space-5); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
  }
}