/*
 * GrassUI is the framework-neutral visual foundation for Grass web products.
 * Keep product layouts and business-specific states in their owning app; put
 * shared tokens and primitives here so Vue, React and Blazor stay coherent.
 */
:root {
  color-scheme: light;
  --grass-color-brand: #16803c;
  --grass-color-brand-strong: #0d6330;
  --grass-color-brand-soft: #eaf7ee;
  --grass-color-brand-rgb: 22, 128, 60;
  --grass-color-canvas: #f5f8f6;
  --grass-color-surface: #ffffff;
  --grass-color-surface-muted: #f8fbf9;
  --grass-color-surface-disabled: #eef3ef;
  --grass-color-text: #17221a;
  --grass-color-text-muted: #617066;
  --grass-color-text-subtle: #829087;
  --grass-color-border: #dbe5de;
  --grass-color-border-strong: #b7c8bc;
  --grass-color-danger: #c53737;
  --grass-color-danger-soft: #fff0f0;
  --grass-color-danger-border: #efbcbc;
  --grass-color-warning: #9a6512;
  --grass-color-warning-soft: #fff8e8;
  --grass-color-warning-border: #efd49a;
  --grass-color-success-border: #b7dfc2;
  --grass-color-focus-ring: rgb(22 128 60 / 22%);
  --grass-radius-sm: .5rem;
  --grass-radius-md: .75rem;
  --grass-radius-lg: 1rem;
  --grass-radius-xl: 1.25rem;
  --grass-shadow-sm: 0 1px 2px rgb(18 47 29 / 6%);
  --grass-shadow-md: 0 10px 30px rgb(18 47 29 / 8%);
  --grass-shadow-lg: 0 24px 56px rgb(18 47 29 / 12%);
  --grass-font-sans: Inter, "Microsoft YaHei UI", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --grass-color-brand: #49b973;
  --grass-color-brand-strong: #7cdd9d;
  --grass-color-brand-soft: #163f25;
  --grass-color-brand-rgb: 73, 185, 115;
  --grass-color-canvas: #101713;
  --grass-color-surface: #17231c;
  --grass-color-surface-muted: #1d2b22;
  --grass-color-surface-disabled: #25342a;
  --grass-color-text: #edf6ef;
  --grass-color-text-muted: #aec2b4;
  --grass-color-text-subtle: #8ea497;
  --grass-color-border: #304438;
  --grass-color-border-strong: #4a6351;
  --grass-color-danger: #ff8580;
  --grass-color-danger-soft: #472221;
  --grass-color-danger-border: #75403d;
  --grass-color-warning: #f5c65e;
  --grass-color-warning-soft: #493b1d;
  --grass-color-warning-border: #75612e;
  --grass-color-success-border: #3f704e;
  --grass-color-focus-ring: rgb(124 221 157 / 35%);
  --grass-shadow-sm: 0 1px 2px rgb(0 0 0 / 28%);
  --grass-shadow-md: 0 10px 30px rgb(0 0 0 / 30%);
  --grass-shadow-lg: 0 24px 56px rgb(0 0 0 / 38%);
}

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

.grass-ui,
.gu-app {
  color: var(--grass-color-text);
  font-family: var(--grass-font-sans);
}

.gu-app {
  min-height: 100vh;
  background:
    radial-gradient(circle at 100% 0, rgb(22 128 60 / 7%), transparent 25rem),
    var(--grass-color-canvas);
}

.gu-workspace { min-width: 0; }

.gu-surface,
.gu-card {
  background: var(--grass-color-surface);
  border: 1px solid var(--grass-color-border);
  border-radius: var(--grass-radius-lg);
  box-shadow: var(--grass-shadow-sm);
}

.gu-card { padding: 1.25rem; }

.gu-kicker {
  margin: 0 0 .35rem;
  color: var(--grass-color-brand);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .09em;
  line-height: 1.2;
  text-transform: uppercase;
}

.gu-page-title {
  margin: 0;
  color: var(--grass-color-text);
  font-size: clamp(1.35rem, 1.1rem + 1vw, 2rem);
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: 1.2;
}

.gu-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 2.5rem;
  padding: .55rem .9rem;
  border: 1px solid transparent;
  border-radius: var(--grass-radius-sm);
  background: var(--grass-color-surface);
  color: var(--grass-color-text);
  font: inherit;
  font-size: .875rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  transition: background-color .18s ease, border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.gu-action:hover:not(:disabled) { transform: translateY(-1px); box-shadow: var(--grass-shadow-sm); }
.gu-action:disabled { cursor: not-allowed; opacity: .55; }
.gu-action--primary { background: var(--grass-color-brand); color: #fff; }
.gu-action--primary:hover:not(:disabled) { background: var(--grass-color-brand-strong); }
.gu-action--secondary { border-color: var(--grass-color-border); }
.gu-action--secondary:hover:not(:disabled) { background: var(--grass-color-surface-muted); border-color: var(--grass-color-border-strong); }
.gu-action--danger { background: var(--grass-color-danger); color: #fff; }

.gu-field {
  width: 100%;
  min-height: 2.5rem;
  padding: .55rem .7rem;
  border: 1px solid var(--grass-color-border);
  border-radius: var(--grass-radius-sm);
  background: var(--grass-color-surface);
  color: var(--grass-color-text);
  font: inherit;
  box-shadow: 0 0 0 0 transparent;
  transition: border-color .15s ease, box-shadow .15s ease, background-color .15s ease;
}

.gu-field:disabled {
  cursor: not-allowed;
  background-color: var(--grass-color-surface-disabled);
  color: var(--grass-color-text-subtle);
  opacity: 1;
}

.gu-field:focus { border-color: var(--grass-color-brand); outline: 0; box-shadow: 0 0 0 3px var(--grass-color-focus-ring); }
.gu-action:focus-visible,
.gu-select__trigger:focus-visible,
.gu-tab:focus-visible { outline: 3px solid var(--grass-color-focus-ring); outline-offset: 2px; }

.gu-status {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  padding: .3rem .6rem;
  border: 1px solid var(--grass-color-border);
  border-radius: 999px;
  background: var(--grass-color-surface-muted);
  color: var(--grass-color-text-muted);
  font-size: .75rem;
  font-weight: 700;
}
.gu-status--success { border-color: var(--grass-color-success-border); background: var(--grass-color-brand-soft); color: var(--grass-color-brand-strong); }
.gu-status--warning { border-color: var(--grass-color-warning-border); background: var(--grass-color-warning-soft); color: var(--grass-color-warning); }
.gu-status--danger { border-color: var(--grass-color-danger-border); background: var(--grass-color-danger-soft); color: var(--grass-color-danger); }

.gu-stack { display: grid; gap: 1rem; }
.gu-stack--compact { gap: .625rem; }
.gu-grid { display: grid; gap: 1rem; }
.gu-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.gu-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.gu-label {
  display: block;
  margin-bottom: .375rem;
  color: var(--grass-color-text);
  font-size: .8125rem;
  font-weight: 700;
}

.gu-hint { margin: .375rem 0 0; color: var(--grass-color-text-muted); font-size: .75rem; line-height: 1.45; }
.gu-divider { height: 1px; margin: 1.25rem 0; border: 0; background: var(--grass-color-border); }

.gu-select { position: relative; width: 100%; }
.gu-select__trigger {
  display: flex;
  width: 100%;
  min-height: 2.5rem;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding: .55rem .7rem;
  border: 1px solid var(--grass-color-border);
  border-radius: var(--grass-radius-sm);
  background: var(--grass-color-surface);
  color: var(--grass-color-text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.gu-select__trigger:hover { border-color: var(--grass-color-border-strong); }
.gu-select.is-open .gu-select__trigger { border-color: var(--grass-color-brand); border-bottom-color: var(--grass-color-border); border-radius: var(--grass-radius-sm) var(--grass-radius-sm) 0 0; }
.gu-select.is-open .gu-select__trigger:focus-visible { outline: 0; }
.gu-select__chevron { display: inline-grid; width: 1.5rem; height: 1.5rem; flex: 0 0 auto; place-items: center; border-radius: 50%; background: var(--grass-color-surface-muted); color: var(--grass-color-text-muted); transition: background-color .18s ease, color .18s ease, transform .18s ease; }
.gu-select__chevron svg { width: 1rem; height: 1rem; }
.gu-select__trigger[aria-expanded="true"] .gu-select__chevron { transform: rotate(180deg); background: var(--grass-color-brand-soft); color: var(--grass-color-brand-strong); }
.gu-select__menu {
  position: absolute;
  z-index: 30;
  top: calc(100% - 1px);
  right: 0;
  left: 0;
  display: grid;
  gap: .2rem;
  max-height: 14rem;
  overflow-y: auto;
  padding: .3rem;
  border: 1px solid var(--grass-color-brand);
  border-top: 0;
  border-radius: 0 0 var(--grass-radius-sm) var(--grass-radius-sm);
  background: var(--grass-color-surface);
  box-shadow: 0 .75rem 1.5rem rgb(18 47 29 / 12%);
}
.gu-select__menu[hidden] { display: none; }
.gu-select__option { width: 100%; padding: .6rem .65rem; border: 0; border-radius: calc(var(--grass-radius-sm) - .125rem); background: transparent; color: var(--grass-color-text); font: inherit; font-size: .875rem; text-align: left; cursor: pointer; }
.gu-select__option:hover, .gu-select__option:focus-visible { background: var(--grass-color-surface-muted); outline: none; }
.gu-select__option[aria-selected="true"] { background: var(--grass-color-brand-soft); color: var(--grass-color-brand-strong); font-weight: 700; }

.gu-icon-button { display: inline-grid; width: 2.25rem; height: 2.25rem; flex: 0 0 auto; place-items: center; padding: 0; border: 1px solid var(--grass-color-border); border-radius: 50%; background: var(--grass-color-surface-muted); color: var(--grass-color-text-muted); cursor: pointer; transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .18s ease; }
.gu-icon-button:hover { transform: translateY(-1px); border-color: var(--grass-color-border-strong); background: var(--grass-color-brand-soft); color: var(--grass-color-brand-strong); }
.gu-icon-button svg { width: 1rem; height: 1rem; }
.gu-icon-button:focus-visible { outline: 3px solid rgb(22 128 60 / 22%); outline-offset: 2px; }

.gu-check-row {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: var(--grass-color-text);
  font-size: .875rem;
  line-height: 1.3;
  cursor: pointer;
}

.gu-check-row input { width: 1rem; height: 1rem; margin: 0; accent-color: var(--grass-color-brand); }

.gu-switch {
  position: relative;
  display: inline-flex;
  width: 2.5rem;
  height: 1.5rem;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--grass-color-border-strong);
  cursor: pointer;
  transition: background-color .18s ease;
}

.gu-switch input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.gu-switch::after { width: 1.125rem; height: 1.125rem; margin: .1875rem; border-radius: 50%; background: #fff; box-shadow: var(--grass-shadow-sm); content: ""; transition: transform .18s ease; }
.gu-switch:has(input:checked) { background: var(--grass-color-brand); }
.gu-switch:has(input:checked)::after { transform: translateX(1rem); }
.gu-switch:has(input:focus-visible) { outline: 3px solid var(--grass-color-focus-ring); outline-offset: 2px; }

.gu-tabs { display: flex; gap: .25rem; overflow-x: auto; padding: .25rem; border: 1px solid var(--grass-color-border); border-radius: var(--grass-radius-md); background: var(--grass-color-surface-muted); }
.gu-tab { min-height: 2.25rem; padding: .45rem .75rem; border: 0; border-radius: var(--grass-radius-sm); background: transparent; color: var(--grass-color-text-muted); font: inherit; font-size: .8125rem; font-weight: 700; white-space: nowrap; cursor: pointer; }
.gu-tab:hover { color: var(--grass-color-text); }
.gu-tab[aria-selected="true"] { background: var(--grass-color-surface); color: var(--grass-color-brand-strong); box-shadow: var(--grass-shadow-sm); }

.gu-alert { display: flex; gap: .75rem; align-items: flex-start; padding: .875rem 1rem; border: 1px solid var(--grass-color-border); border-radius: var(--grass-radius-md); background: var(--grass-color-surface-muted); color: var(--grass-color-text); font-size: .875rem; line-height: 1.45; }
.gu-alert strong { display: block; margin-bottom: .1rem; }
.gu-alert--success { border-color: var(--grass-color-success-border); background: var(--grass-color-brand-soft); }
.gu-alert--warning { border-color: var(--grass-color-warning-border); background: var(--grass-color-warning-soft); }
.gu-alert--danger { border-color: var(--grass-color-danger-border); background: var(--grass-color-danger-soft); }

.gu-table-wrap { overflow-x: auto; border: 1px solid var(--grass-color-border); border-radius: var(--grass-radius-md); }
.gu-table { width: 100%; border-collapse: collapse; background: var(--grass-color-surface); font-size: .8125rem; }
.gu-table th, .gu-table td { padding: .75rem 1rem; border-bottom: 1px solid var(--grass-color-border); text-align: left; white-space: nowrap; }
.gu-table th { background: var(--grass-color-surface-muted); color: var(--grass-color-text-muted); font-size: .6875rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.gu-table tbody tr:last-child td { border-bottom: 0; }
.gu-table tbody tr:hover { background: var(--grass-color-surface-muted); }

.gu-avatar { display: inline-grid; width: 2.5rem; height: 2.5rem; place-items: center; border: 1px solid var(--grass-color-success-border); border-radius: 50%; background: var(--grass-color-brand-soft); color: var(--grass-color-brand-strong); font-size: .875rem; font-weight: 800; }
.gu-empty { display: grid; min-height: 10rem; place-items: center; padding: 2rem; border: 1px dashed var(--grass-color-border-strong); border-radius: var(--grass-radius-lg); background: var(--grass-color-surface-muted); color: var(--grass-color-text-muted); text-align: center; }
.gu-empty strong { display: block; margin-bottom: .375rem; color: var(--grass-color-text); }

@media (max-width: 640px) {
  .gu-grid--two, .gu-grid--three { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}