/* Base design tokens (light/dark aware) */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f1a;
    --fg: #e5ecff;
    --muted: rgba(203, 214, 247, 0.75);
    --primary: #3f5af2;
    --accent: #00ffd0;
    --error: #ff3333;
    --surface: rgba(18, 24, 38, 0.92);
    --surface-strong: rgba(6, 8, 14, 0.9);
    --border: rgba(70, 92, 132, 0.4);
    --shadow: 0 18px 36px rgba(0, 0, 0, 0.38);
  }
}

:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #666;
  --primary: #00c8a2;
  --accent: #e91e63;
  --surface: #f7f7f9;
  --surface-strong: #eef2f7;
  --border: #d9d9e3;
  --shadow: 0 8px 20px rgba(0, 0, 0, 0.08);

  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-size: clamp(16px, 0.9rem + 0.8vw, 20px);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: 0.2s ease-in-out;
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;
  --space-9: 3.5rem;
  --space-10: 4rem;
  --space-11: 4.5rem;
  --space-12: 5rem;
  --space-13: 5.5rem;
  --space-14: 6rem;
  --space-15: 6.5rem;
}

[data-theme="dark"] {
  --bg: #0b0f1a;
  --fg: #e5ecff;
  --muted: rgba(203, 214, 247, 0.75);
  --primary: #3f5af2;
  --accent: #00ffd0;
  --surface: rgba(18, 24, 38, 0.92);
  --surface-strong: rgba(6, 8, 14, 0.9);
  --border: rgba(70, 92, 132, 0.4);
  --shadow: 0 18px 36px rgba(0, 0, 0, 0.38);
}

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

* { margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: var(--font-size); -webkit-text-size-adjust: 100%; }

body {
  min-height: 100dvh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: color-mix(in oklab, var(--primary) 85%, #004);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  text-decoration-thickness: 0.08em;
  transition: color var(--transition), text-decoration-color var(--transition);
}
a:hover { color: color-mix(in oklab, var(--primary) 95%, #002); }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

p { margin: var(--space-2) 0 var(--space-3); }

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--fg);
  margin-bottom: var(--space-2);
  line-height: 1.2;
}
h1 { font-size: clamp(1.75rem, 1.1rem + 3vw, 2.5rem); }
h2 { font-size: clamp(1.375rem, 1.0rem + 2vw, 1.875rem); }
h3 { font-size: clamp(1.125rem, 0.95rem + 1.2vw, 1.5rem); }
label { font-weight: 600; display: inline-block; }

/* Layout primitives */
.container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  padding-block: clamp(1rem, 2.5vw, 2rem);
}

.row {
  display: flex;
  flex-wrap: wrap;
}
.col { flex: 1 1 0; padding: 0.5rem; }
.col-1 { flex-basis: 8.3333%; }
.col-2 { flex-basis: 16.6667%; }
.col-3 { flex-basis: 25%; }
.col-4 { flex-basis: 33.3333%; }
.col-5 { flex-basis: 41.6667%; }
.col-6 { flex-basis: 50%; }
.col-8 { flex-basis: 66.6667%; }
.col-10 { flex-basis: 83.3333%; }
.col-11 { flex-basis: 91.6667%; }
.col-12 { flex-basis: 100%; }

@media (min-width: 576px) {
  .col-sm-3 { flex-basis: 25%; }
  .col-sm-6 { flex-basis: 50%; }
  .col-sm-8 { flex-basis: 66.6667%; }
  .col-sm-10 { flex-basis: 83.3333%; }
  .col-sm-12 { flex-basis: 100%; }
}
@media (min-width: 768px) {
  .col-md-3 { flex-basis: 25%; }
  .col-md-6 { flex-basis: 50%; }
  .col-md-8 { flex-basis: 66.6667%; }
  .col-md-10 { flex-basis: 83.3333%; }
  .col-md-12 { flex-basis: 100%; }
}
@media (min-width: 992px) {
  .col-lg-3 { flex-basis: 25%; }
  .col-lg-6 { flex-basis: 50%; }
  .col-lg-8 { flex-basis: 66.6667%; }
  .col-lg-10 { flex-basis: 83.3333%; }
  .col-lg-12 { flex-basis: 100%; }
}
@media (min-width: 1200px) {
  .col-xl-3 { flex-basis: 25%; }
  .col-xl-6 { flex-basis: 50%; }
  .col-xl-8 { flex-basis: 66.6667%; }
  .col-xl-10 { flex-basis: 83.3333%; }
  .col-xl-12 { flex-basis: 100%; }
}

.grid { display: grid; }
.grid-auto-100 { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
.grid-auto-120 { grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); }
.grid-auto-160 { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.grid-auto-200 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid-auto-315 { grid-template-columns: repeat(auto-fit, minmax(315px, 1fr)); }
.grid-140-1fr { grid-template-columns: 140px minmax(0, 1fr); }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-flow-dense { grid-auto-flow: dense; }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.row-span-2 { grid-row: span 2; }
.row-span-3 { grid-row: span 3; }

@media (min-width: 576px) {
  .grid-cols-sm-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .grid-cols-sm-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-cols-sm-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-cols-sm-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (min-width: 768px) {
  .grid-cols-md-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .grid-cols-md-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-cols-md-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-cols-md-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (min-width: 992px) {
  .grid-cols-lg-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .grid-cols-lg-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-cols-lg-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-cols-lg-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (min-width: 1200px) {
  .grid-cols-xl-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .grid-cols-xl-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-cols-xl-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-cols-xl-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.flex { display: flex; }
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1 1 auto; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.align-center { align-items: center; }
.align-start { align-items: flex-start; }
.self-start { align-self: flex-start; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }


/* Spacing utilities */
.p-0 { padding: var(--space-0) !important; }
.p-1 { padding: var(--space-1) !important; }
.p-2 { padding: var(--space-2) !important; }
.p-3 { padding: var(--space-3) !important; }
.p-4 { padding: var(--space-4) !important; }
.p-5 { padding: var(--space-5) !important; }
.px-0 { padding-left: var(--space-0) !important; padding-right: var(--space-0) !important; }
.px-1 { padding-left: var(--space-1) !important; padding-right: var(--space-1) !important; }
.px-2 { padding-left: var(--space-2) !important; padding-right: var(--space-2) !important; }
.px-3 { padding-left: var(--space-3) !important; padding-right: var(--space-3) !important; }
.px-4 { padding-left: var(--space-4) !important; padding-right: var(--space-4) !important; }
.px-5 { padding-left: var(--space-5) !important; padding-right: var(--space-5) !important; }
.pl-0 { padding-left: var(--space-0) !important; }
.pl-1 { padding-left: var(--space-1) !important; }
.pl-2 { padding-left: var(--space-2) !important; }
.pl-3 { padding-left: var(--space-3) !important; }
.pl-4 { padding-left: var(--space-4) !important; }
.pl-5 { padding-left: var(--space-5) !important; }
.pl-10 { padding-left: var(--space-11) !important; }
.pr-0 { padding-right: var(--space-0) !important; }
.pr-1 { padding-right: var(--space-1) !important; }
.pr-2 { padding-right: var(--space-2) !important; }
.pr-3 { padding-right: var(--space-3) !important; }
.pr-4 { padding-right: var(--space-4) !important; }
.pr-5 { padding-right: var(--space-5) !important; }
.py-0 { padding-top: var(--space-0) !important; padding-bottom: var(--space-0) !important; }
.py-1 { padding-top: var(--space-1) !important; padding-bottom: var(--space-1) !important; }
.py-2 { padding-top: var(--space-2) !important; padding-bottom: var(--space-2) !important; }
.py-3 { padding-top: var(--space-3) !important; padding-bottom: var(--space-3) !important; }
.py-4 { padding-top: var(--space-4) !important; padding-bottom: var(--space-4) !important; }
.py-5 { padding-top: var(--space-5) !important; padding-bottom: var(--space-5) !important; }
.pt-0 { padding-top: var(--space-0) !important; }
.pt-1 { padding-top: var(--space-1) !important; }
.pt-2 { padding-top: var(--space-2) !important; }
.pt-3 { padding-top: var(--space-3) !important; }
.pt-4 { padding-top: var(--space-4) !important; }
.pt-5 { padding-top: var(--space-5) !important; }
.pt-10 { padding-top: var(--space-10) !important; }
.pt-12 { padding-top: var(--space-12) !important; }
.pb-0 { padding-bottom: var(--space-0) !important; }
.pb-1 { padding-bottom: var(--space-1) !important; }
.pb-2 { padding-bottom: var(--space-2) !important; }
.pb-3 { padding-bottom: var(--space-3) !important; }
.pb-4 { padding-bottom: var(--space-4) !important; }
.pb-5 { padding-bottom: var(--space-5) !important; }
.m-0 { margin: var(--space-0) !important; }
.m-1 { margin: var(--space-1) !important; }
.m-2 { margin: var(--space-2) !important; }
.m-3 { margin: var(--space-3) !important; }
.m-4 { margin: var(--space-4) !important; }
.m-auto { margin: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mx-0 { margin-left: var(--space-0) !important; margin-right: var(--space-0); }
.mx-1 { margin-left: var(--space-1) !important; margin-right: var(--space-1); }
.mx-2 { margin-left: var(--space-2) !important; margin-right: var(--space-2); }
.mx-3 { margin-left: var(--space-3) !important; margin-right: var(--space-3); }
.mx-4 { margin-left: var(--space-4) !important; margin-right: var(--space-4); }
.mx-5 { margin-left: var(--space-5) !important; margin-right: var(--space-5); }
.ml-0 { margin-left: var(--space-0) !important; }
.ml-1 { margin-left: var(--space-1) !important; }
.ml-2 { margin-left: var(--space-2) !important; }
.ml-3 { margin-left: var(--space-3) !important; }
.ml-4 { margin-left: var(--space-4) !important; }
.mr-0 { margin-right: var(--space-0) !important; }
.mr-1 { margin-right: var(--space-1) !important; }
.mr-2 { margin-right: var(--space-2) !important; }
.mr-3 { margin-right: var(--space-3) !important; }
.mr-4 { margin-right: var(--space-4) !important; }
.my-0 { margin-top: var(--space-0) !important; margin-bottom: var(--space-0) !important; }
.my-1 { margin-top: var(--space-1) !important; margin-bottom: var(--space-1) !important; }
.my-2 { margin-top: var(--space-2) !important; margin-bottom: var(--space-2) !important; }
.my-3 { margin-top: var(--space-3) !important; margin-bottom: var(--space-3) !important; }
.my-4 { margin-top: var(--space-4) !important; margin-bottom: var(--space-4) !important; }
.my-5 { margin-top: var(--space-5) !important; margin-bottom: var(--space-5) !important; }
.mt-0 { margin-top: var(--space-0) !important; }
.mt-1 { margin-top: var(--space-1) !important; }
.mt-2 { margin-top: var(--space-2) !important; }
.mt-3 { margin-top: var(--space-3) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-5 { margin-top: var(--space-5) !important; }
.mt-6 { margin-top: var(--space-6) !important; }
.mt-7 { margin-top: var(--space-7) !important; }
.mt-8 { margin-top: var(--space-8) !important; }
.mt-10 { margin-top: var(--space-10) !important; }
.mt-15 { margin-top: var(--space-15) !important; }
.mb-0 { margin-bottom: var(--space-0) !important; }
.mb-1 { margin-bottom: var(--space-1) !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-3 { margin-bottom: var(--space-3) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-5 { margin-bottom: var(--space-5) !important; }

/* Display & positioning */
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-none { display: none; }
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

@media (min-width: 576px) {
  .d-sm-block { display: block; }
  .d-sm-inline { display: inline; }
  .d-sm-inline-block { display: inline-block; }
  .d-sm-none { display: none; }
  .relative-sm { position: relative; }
  .absolute-sm { position: absolute; }
  .fixed-sm { position: fixed; }
  .sticky-sm { position: sticky; }
}
@media (min-width: 768px) {
  .d-md-block { display: block; }
  .d-md-inline { display: inline; }
  .d-md-inline-block { display: inline-block; }
  .d-md-none { display: none; }
  .relative-md { position: relative; }
  .absolute-md { position: absolute; }
  .fixed-md { position: fixed; }
  .sticky-md { position: sticky; }
}
@media (min-width: 992px) {
  .d-lg-block { display: block; }
  .d-lg-inline { display: inline; }
  .d-lg-inline-block { display: inline-block; }
  .d-lg-none { display: none; }
  .relative-lg { position: relative; }
  .absolute-lg { position: absolute; }
  .fixed-lg { position: fixed; }
  .sticky-lg { position: sticky; }
}
@media (min-width: 1200px) {
  .d-xl-block { display: block; }
  .d-xl-inline { display: inline; }
  .d-xl-inline-block { display: inline-block; }
  .d-xl-none { display: none; }
  .relative-xl { position: relative; }
  .absolute-xl { position: absolute; }
  .fixed-xl { position: fixed; }
  .sticky-xl { position: sticky; }
}

.inset-0 { inset: 0; }
.top-50 { top: 50%; }
.top-0 { top: 0; }
.bottom-50 { bottom: 50; }
.bottom-0 { bottom: 0; }
.left-50 { left: 50%; }
.left-10 { left: var(--space-10); }
.left-0 { left: 0; }
.right-50 { right: 50%; }
.right-0 { right: 0; }

.translate-center { transform: translate(-50%, -50%); }

/* Sizing */
.w-100 { width: 100%; }
.w-90dvw { width: 90dvw; }
.w-80dvw { width: 80dvw; }
.w-70dvw { width: 70dvw; }
.w-60dvw { width: 60dvw; }
.w-50dvw { width: 50dvw; }
.w-300px { width: 300px; }
.w-200px { width: 200px; }
.w-100px { width: 100px; }
.w-62px { width: 62px; }
.w-48px { width: 48px; }
.w-40px { width: 40px; }
.w-30px { width: 30px; }
.h-auto { height: auto; }
.h-100 { height: 100%; }
.h-100vh { height: 100vh; }
.h-60vh { height: 60vh; }
.h-50vh { height: 50vh; }
.h-100dvh { height: 100dvh; }
.h-80dvh { height: 80dvh; }
.h-60dvh { height: 60dvh; }
.h-200px { height: 200px; }
.h-100px { height: 100px; }
.h-48px { height: 48px; }
.h-40px { height: 40px; }
.minh-100dvh { min-height: 100dvh; }
.minh-100 { min-height: 100%; }
.minh-120 { min-height: 120px; }
.minh-420 { min-height: 420px; }
.minh-520 { min-height: clamp(520px, 70vh, 760px); }
.maxw-960 { width: min(960px, 94vw); }
.maxw-1040 { width: min(1040px, calc(100vw - clamp(40px, 4vw, 72px))); }

@media (min-width: 576px) {
  .w-sm-100 { width: 100%; }
  .h-sm-100 { height: 100%; }
  .h-sm-100vh { height: 100vh; }
  .h-sm-100dvh { height: 100dvh; }
}
@media (min-width: 768px) {
  .w-md-100 { width: 100%; }
  .h-md-100 { height: 100%; }
  .h-md-100vh { height: 100vh; }
  .h-md-100dvh { height: 100dvh; }
}
@media (min-width: 992px) {
  .w-lg-100 { width: 100%; }
  .h-lg-100 { height: 100%; }
  .h-lg-100vh { height: 100vh; }
  .h-lg-100dvh { height: 100dvh; }
}
@media (min-width: 1200px) {
  .w-xl-100 { width: 100%; }
  .h-xl-100 { height: 100%; }
  .h-xl-100vh { height: 100vh; }
  .h-xl-100dvh { height: 100dvh; }
}

/* Text utilities */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text { color: var(--fg); }
.text-muted { color: var(--muted); }
.text-accent { color: var(--accent); }
.text-primary { color: var(--primary); }
.text-error { color: var(--error); }
.text-sm { font-size: 0.7rem; }
.text-lg { font-size: 1.125rem; }
.nowrap { white-space: nowrap; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}
.text-decoration-none { text-decoration: none; }

/* Borders & radii */
.border { border: 1px solid var(--border); }
.border-0 { border: none; }
.border-dashed { border-style: dashed; }
.border-2 { border-width: 2px; }
.border-primary { border-color: var(--primary); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: 999px; }

/* Surfaces */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.card--selectable {
  cursor: pointer;
  transition: border-color var(--transition), transform 0.15s ease, box-shadow var(--transition), background var(--transition);
}
.card--selectable:hover {
  transform: translateY(-2px);
  border-color: color-mix(in oklab, var(--primary) 50%, var(--border));
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.35);
}
.card--selected {
  border-color: color-mix(in oklab, var(--primary) 80%, var(--border));
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--primary) 35%, transparent);
}
.panel-surface {
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

/* Buttons */
.btn {
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  font: 600 0.95rem/1 var(--font-sans);
  background: color-mix(in oklab, var(--surface) 70%, #000 10%);
  border: 1px solid var(--border);
  color: var(--fg);
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.btn:focus-visible { outline: 3px solid color-mix(in oklab, var(--primary) 70%, transparent); outline-offset: 2px; }
.btn:hover {
  background: color-mix(in oklab, var(--surface) 60%, var(--primary) 20%);
  border-color: color-mix(in oklab, var(--primary) 60%, var(--border));
  box-shadow: 0 10px 18px rgba(0, 0, 0, 0.25);
}
.btn--primary {
  background: var(--primary);
  border-color: color-mix(in oklab, var(--primary) 80%, #000);
  color: #fff;
}
.btn--primary:hover { background: color-mix(in oklab, var(--primary) 85%, #000); }
.btn[disabled], .disabled { opacity: 0.6; cursor: not-allowed; }

/* Forms */
input, select, textarea {
  width: 100%;
  background: var(--surface);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding-inline: clamp(0.75rem, 2vw, 1rem);
  padding-block: clamp(0.55rem, 1.2vw, 0.85rem);
  min-height: clamp(44px, 2.75rem, 56px);
  font-size: 1rem;
  transition: var(--transition);
}
input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem color-mix(in oklab, var(--primary) 35%, transparent);
}
input[type="radio"],
input[type="checkbox"] {
  width: auto;
  height: auto;
  min-height: 0;
  padding: 0;
}

/* Scrollbars (webkit) */
::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover { background: color-mix(in oklab, var(--border) 70%, #000); }

/* Opacity / visibility */
.opacity-0 { opacity: 0; }
.opacity-1 { opacity: 1; }
.opacity-55 { opacity: 0.55; }
.invisible { visibility: hidden; }
.visible { visibility: visible; }
.hidden { display: none !important; }
.object-fit-cover { object-fit: cover; }
.perspective-1000px { perspective: 1000px; }
.backface-visibility-hidden { backface-visibility:hidden; }
.z-front { z-index: 999; }
.z-middle { z-index: 500; }
.z-back { z-index: 0; }

/* Background helpers */
.bg-cover { background-size: cover; }
.bg-contain { background-size: contain; }
.bg-center { background-position: center; }
.bg-no-repeat { background-repeat: no-repeat; }
.bg-transparent { background: transparent; }

/* Shadows */
.shadow-sm { box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08); }
.shadow-md { box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12); }
.shadow-lg { box-shadow: 0 18px 36px rgba(0, 0, 0, 0.25); }

/* Helpers específicos */
.collapsible { max-height: 2000px; transition: max-height 1s ease, opacity 1s ease; overflow: hidden; }
.collapsible.is-hidden { max-height: 0; opacity: 0; }
.scalex-50 { transform: scaleX(0.5); display: block; }
.scaley-0 { transform: scaleY(0); }
.scaley-1 { transform: scaleY(1); }
.opacity-1s-ease { transition: opacity 1s ease; }
.transform-1s-ease { transition: transform 1s ease; }
.transform-08s { transition: transform 0.8s; }
.transform-origin-bottom { transform-origin: bottom; }
.translatey-0 { transform: translateY(0); }
.translatey-40px { transform: translateY(40px); }
.rotatey-180deg { transform: rotateY(180deg); }
.preserve-3d { transform-style: preserve-3d; }
.overflow-x-hidden { overflow-x: hidden; }
.overflow-y-hidden { overflow-y: hidden; }
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* Popovers */
.popover-center {
  position: fixed;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  max-width: min(92vw, 960px);
}
.popover-center::backdrop { background: rgba(0, 0, 0, 0.55); }
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 998;
}

.switch-track { width: 60px; height: 34px; background: var(--border); position: relative; }
.switch-track[data-state="on"] { background: var(--primary); }
.switch-thumb { position: absolute; width: 26px; height: 26px; background: #fff; left: 4px; top: 4px; transition: transform .2s; display: grid; place-items: center; line-height: 1; font-size: 16px; }
.switch-thumb[data-state="on"] { transform: translateX(26px); }

/* Drag and drop */
.drag-handle { cursor: grab; }
.drag-handle:active { cursor: grabbing; }
.dragging { opacity: 0.6; transform: scale(0.98); }
.drag-over {
  outline: 2px dashed color-mix(in oklab, var(--primary) 55%, var(--border));
  outline-offset: 4px;
  background: color-mix(in oklab, var(--surface) 70%, var(--primary) 10%);
}

/* cursors */
.cursor-pointer { cursor: pointer; }
.cursor-cell { cursor: cell; }
.cursor-grab { cursor: grab; cursor: -webkit-grab; }
.cursor-grabbing { cursor: grabbing; cursor: -webkit-grabbing; }
.cursor-not-allowed { cursor: not-allowed; }
.cursor-progress { cursor: progress; }
.cursor-wait { cursor: wait; }