/* ============================================================
   GoCheck — Crypto Intelligence Dashboard
   Global design system: tokens, glassmorphism, animations.
   Tailwind handles layout/utilities via CDN; this file holds
   the bespoke premium styling that utilities can't express.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  --bg-0: #07080c;          /* page base */
  --bg-1: #0b0d14;          /* deep panel */
  --bg-2: #11131d;          /* raised panel */
  --stroke: rgba(255, 255, 255, 0.08);
  --stroke-strong: rgba(255, 255, 255, 0.14);
  --text-hi: #f4f6fb;
  --text-mid: #aeb4c4;
  --text-lo: #6b7180;

  --accent: #7c5cff;        /* violet */
  --accent-2: #22d3ee;      /* cyan */
  --accent-3: #34d399;      /* emerald (profit) */
  --danger: #fb7185;        /* rose (loss) */
  --warning: #fbbf24;       /* amber */

  --glass: rgba(255, 255, 255, 0.035);
  --glass-hi: rgba(255, 255, 255, 0.06);
  --shadow-soft: 0 18px 48px -20px rgba(0, 0, 0, 0.75);
  --shadow-glow: 0 0 0 1px rgba(124, 92, 255, 0.25), 0 14px 50px -12px rgba(124, 92, 255, 0.35);
  --radius: 18px;
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--text-hi);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.01em;
}

h1, h2, h3, h4, .display {
  font-family: "Space Grotesk", "Inter", sans-serif;
  letter-spacing: -0.02em;
}

/* Ambient background gradient used on app pages */
.app-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60rem 60rem at 12% -10%, rgba(124, 92, 255, 0.16), transparent 60%),
    radial-gradient(50rem 50rem at 100% 0%, rgba(34, 211, 238, 0.12), transparent 55%),
    radial-gradient(40rem 40rem at 50% 120%, rgba(52, 211, 153, 0.08), transparent 60%),
    var(--bg-0);
}

/* ---------- Glass surfaces ---------- */
.glass {
  background: var(--glass);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.glass-hover {
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.glass-hover:hover {
  transform: translateY(-3px);
  border-color: var(--stroke-strong);
  background: var(--glass-hi);
  box-shadow: var(--shadow-soft), 0 0 0 1px rgba(124, 92, 255, 0.18);
}

/* Gradient hairline at the top edge of feature cards */
.card-sheen {
  position: relative;
  overflow: hidden;
}
.card-sheen::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124, 92, 255, 0.7), rgba(34, 211, 238, 0.5), transparent);
  opacity: 0.7;
}

/* ---------- Text helpers ---------- */
.text-gradient {
  background: linear-gradient(100deg, #fff 0%, #c9c4ff 40%, #8fe9ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.profit { color: var(--accent-3); }
.loss { color: var(--danger); }
.muted { color: var(--text-mid); }
.dim { color: var(--text-lo); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 12px;
  padding: 0.7rem 1.1rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.2s ease;
  user-select: none;
}
.btn:active { transform: translateY(1px) scale(0.99); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #5b8bff 60%, var(--accent-2));
  color: #fff;
  box-shadow: 0 10px 30px -10px rgba(124, 92, 255, 0.7);
}
.btn-primary:hover { box-shadow: 0 14px 38px -10px rgba(124, 92, 255, 0.9); }

.btn-ghost {
  background: var(--glass);
  border-color: var(--stroke);
  color: var(--text-hi);
}
.btn-ghost:hover { background: var(--glass-hi); border-color: var(--stroke-strong); }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.badge .dot { width: 6px; height: 6px; border-radius: 50%; }

.badge-active   { color: #6ee7b7; background: rgba(52, 211, 153, 0.1);  border-color: rgba(52, 211, 153, 0.25); }
.badge-active .dot   { background: #34d399; box-shadow: 0 0 8px #34d399; }
.badge-idle     { color: #cbd5e1; background: rgba(148, 163, 184, 0.1); border-color: rgba(148, 163, 184, 0.22); }
.badge-idle .dot     { background: #94a3b8; }
.badge-flagged  { color: #fda4af; background: rgba(251, 113, 133, 0.1); border-color: rgba(251, 113, 133, 0.28); }
.badge-flagged .dot  { background: #fb7185; box-shadow: 0 0 8px #fb7185; }

.badge-passed   { color: #6ee7b7; background: rgba(52, 211, 153, 0.1);  border-color: rgba(52, 211, 153, 0.25); }
.badge-warning  { color: #fcd34d; background: rgba(251, 191, 36, 0.1);  border-color: rgba(251, 191, 36, 0.28); }
.badge-failed   { color: #fda4af; background: rgba(251, 113, 133, 0.1); border-color: rgba(251, 113, 133, 0.28); }

.tag {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.18rem 0.5rem;
  border-radius: 7px;
  background: rgba(124, 92, 255, 0.12);
  color: #c4b5fd;
  border: 1px solid rgba(124, 92, 255, 0.22);
}
.tag-Whale { background: rgba(34, 211, 238, 0.12); color: #67e8f9; border-color: rgba(34, 211, 238, 0.25); }
.tag-Smart { background: rgba(52, 211, 153, 0.12); color: #6ee7b7; border-color: rgba(52, 211, 153, 0.25); }
.tag-Risk  { background: rgba(251, 113, 133, 0.12); color: #fda4af; border-color: rgba(251, 113, 133, 0.25); }
.tag-New   { background: rgba(148, 163, 184, 0.12); color: #cbd5e1; border-color: rgba(148, 163, 184, 0.22); }

/* ---------- Sidebar nav ---------- */
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.7rem 0.9rem;
  border-radius: 12px;
  color: var(--text-mid);
  font-weight: 500;
  font-size: 0.92rem;
  transition: background 0.2s ease, color 0.2s ease;
  position: relative;
}
.nav-link svg { width: 19px; height: 19px; flex: none; }
.nav-link:hover { color: var(--text-hi); background: var(--glass); }
.nav-link.active {
  color: #fff;
  background: linear-gradient(100deg, rgba(124, 92, 255, 0.22), rgba(34, 211, 238, 0.08));
  border: 1px solid rgba(124, 92, 255, 0.25);
}
.nav-link.active::before {
  content: "";
  position: absolute;
  left: -10px; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 60%;
  border-radius: 4px;
  background: linear-gradient(var(--accent), var(--accent-2));
  box-shadow: 0 0 12px var(--accent);
}

/* ---------- Table ---------- */
.data-table { width: 100%; border-collapse: separate; border-spacing: 0; }
.data-table thead th {
  text-align: left;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-lo);
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--stroke);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}
.data-table thead th:hover { color: var(--text-mid); }
.data-table thead th .arrow { opacity: 0.4; font-size: 0.7rem; }
.data-table thead th.sorted .arrow { opacity: 1; color: var(--accent-2); }
.data-table tbody td {
  padding: 0.95rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.045);
  font-size: 0.9rem;
  vertical-align: middle;
}
.data-table tbody tr {
  transition: background 0.18s ease;
}
.data-table tbody tr:hover { background: rgba(124, 92, 255, 0.06); }
.data-table tbody tr:last-child td { border-bottom: none; }

.addr {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.82rem;
  color: var(--text-hi);
}

/* mini sparkline cell for win rate */
.meter { height: 6px; border-radius: 999px; background: rgba(255,255,255,0.08); overflow: hidden; }
.meter > span { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--accent-3), var(--accent-2)); }

/* ---------- Inputs ---------- */
.field {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--stroke);
  border-radius: 12px;
  padding: 0.8rem 1rem 0.8rem 2.6rem;
  color: var(--text-hi);
  font-size: 0.9rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  outline: none;
}
.field::placeholder { color: var(--text-lo); }
.field:focus {
  border-color: rgba(124, 92, 255, 0.6);
  box-shadow: 0 0 0 4px rgba(124, 92, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
}

/* ---------- Login animated background ---------- */
.login-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: var(--bg-0);
}
.login-bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
  animation: float 16s ease-in-out infinite;
}
.orb-1 { width: 38rem; height: 38rem; left: -8rem; top: -10rem; background: radial-gradient(circle, #7c5cff, transparent 70%); }
.orb-2 { width: 34rem; height: 34rem; right: -8rem; bottom: -10rem; background: radial-gradient(circle, #22d3ee, transparent 70%); animation-delay: -5s; }
.orb-3 { width: 26rem; height: 26rem; left: 40%; top: 50%; background: radial-gradient(circle, #34d399, transparent 70%); animation-delay: -9s; opacity: 0.4; }

/* faint moving grid overlay */
.login-bg .grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 75%);
  animation: gridshift 20s linear infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(2rem, -1.5rem) scale(1.08); }
}
@keyframes gridshift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 44px 44px, 44px 44px; }
}

/* ---------- Entrance animations ---------- */
@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.rise { animation: rise 0.6s cubic-bezier(0.22, 1, 0.36, 1) both; }
.rise-1 { animation-delay: 0.05s; }
.rise-2 { animation-delay: 0.12s; }
.rise-3 { animation-delay: 0.19s; }
.rise-4 { animation-delay: 0.26s; }
.rise-5 { animation-delay: 0.33s; }

/* ---------- Loading skeletons ---------- */
.skeleton {
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
}
.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.09), transparent);
  animation: shimmer 1.4s infinite;
}
@keyframes shimmer { 100% { transform: translateX(100%); } }

/* ---------- Timeline (Checks) ---------- */
.timeline { position: relative; padding-left: 1.75rem; }
.timeline::before {
  content: "";
  position: absolute;
  left: 6px; top: 4px; bottom: 4px;
  width: 2px;
  background: linear-gradient(var(--accent), rgba(34, 211, 238, 0.2), transparent);
}
.timeline-node {
  position: absolute;
  left: -1.75rem; top: 1.4rem;
  width: 13px; height: 13px;
  border-radius: 50%;
  border: 2px solid var(--bg-0);
}
.node-passed  { background: var(--accent-3); box-shadow: 0 0 10px var(--accent-3); }
.node-warning { background: var(--warning); box-shadow: 0 0 10px var(--warning); }
.node-failed  { background: var(--danger); box-shadow: 0 0 10px var(--danger); }

/* ---------- Dropdown ---------- */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 0.6rem);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
  z-index: 50;
}
.dropdown.open .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 999px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); background-clip: padding-box; }

/* ---------- Mobile sidebar ---------- */
@media (max-width: 1023px) {
  #sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    transform: translateX(-105%);
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: 60;
  }
  #sidebar.open { transform: translateX(0); }
  #sidebar-overlay { transition: opacity 0.3s ease; }
}

/* tiny utility */
.divider { height: 1px; background: var(--stroke); }

/* ---------- Work-in-progress overlay ---------- */
.wip-blur { filter: blur(7px) saturate(0.8); opacity: 0.55; pointer-events: none; user-select: none; }
.wip-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: grid;
  place-items: center;
  padding: 1rem;
}
.wip-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  color: #fcd34d;
  background: rgba(251, 191, 36, 0.12);
  border: 1px solid rgba(251, 191, 36, 0.35);
}

/* ---------- Modal (wallet popup) ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(4, 5, 8, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, visibility 0.22s ease;
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-box {
  width: 100%;
  max-width: 640px;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
  padding: 1.5rem;
  transform: translateY(16px) scale(0.98);
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}
.modal-overlay.open .modal-box { transform: translateY(0) scale(1); }
.modal-close {
  position: sticky;
  top: 0;
  float: right;
  display: grid;
  place-items: center;
  width: 32px; height: 32px;
  border-radius: 10px;
  background: var(--glass);
  border: 1px solid var(--stroke);
  color: var(--text-mid);
  cursor: pointer;
  transition: all 0.18s ease;
  z-index: 2;
}
.modal-close:hover { color: var(--text-hi); background: var(--glass-hi); border-color: var(--stroke-strong); }
.modal-close svg { width: 16px; height: 16px; }

/* ---------- Copy button + redirect links (wallet/token cells) ---------- */
.copy-btn {
  display: inline-grid;
  place-items: center;
  width: 24px; height: 24px;
  border-radius: 7px;
  color: var(--text-lo);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  flex: none;
  transition: all 0.15s ease;
}
.copy-btn svg { width: 13px; height: 13px; }
.copy-btn:hover { color: var(--text-hi); background: var(--glass-hi); border-color: var(--stroke); }
.copy-btn.copied { color: var(--accent-3); }
.copy-btn.copy-xs { width: 20px; height: 20px; }
.copy-btn.copy-xs svg { width: 11px; height: 11px; }

.nav-redirect {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
}
.nav-redirect:hover { color: var(--accent-2); border-bottom-color: rgba(34, 211, 238, 0.5); }

/* migration meter color states */
.mig-low > span  { background: linear-gradient(90deg, #fbbf24, #fb7185); }
.mig-mid > span  { background: linear-gradient(90deg, #22d3ee, #7c5cff); }
.mig-high > span { background: linear-gradient(90deg, #34d399, #22d3ee); }

/* ---------- Toast ---------- */
#toast-host {
  position: fixed;
  left: 50%; bottom: 28px;
  transform: translateX(-50%);
  z-index: 200;
  display: flex; flex-direction: column; gap: 8px; align-items: center;
  pointer-events: none;
}
.toast {
  background: rgba(17, 19, 29, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--stroke-strong);
  color: var(--text-hi);
  font-size: 0.82rem; font-weight: 500;
  padding: 0.6rem 1rem;
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ---------- Checks: month navigator + date-range list ---------- */
.month-nav-btn {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: 11px;
  background: var(--glass);
  border: 1px solid var(--stroke);
  color: var(--text-mid);
  cursor: pointer;
  transition: all 0.18s ease;
}
.month-nav-btn:hover:not(:disabled) { color: var(--text-hi); border-color: var(--stroke-strong); background: var(--glass-hi); }
.month-nav-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.month-nav-btn svg { width: 18px; height: 18px; }

.range-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: 14px;
  background: var(--glass);
  border: 1px solid var(--stroke);
  cursor: pointer;
  transition: transform 0.2s cubic-bezier(0.22,1,0.36,1), border-color 0.2s, background 0.2s;
}
.range-item:hover {
  transform: translateX(4px);
  border-color: var(--stroke-strong);
  background: var(--glass-hi);
}
.range-item .range-dates { font-family: "Space Grotesk", sans-serif; font-weight: 600; letter-spacing: -0.01em; }
.range-item .range-arrow { color: var(--text-lo); transition: color 0.2s, transform 0.2s; }
.range-item:hover .range-arrow { color: var(--accent-2); transform: translateX(3px); }

/* Most-recent range — highlighted */
.range-item.latest {
  background: linear-gradient(100deg, rgba(124,92,255,0.16), rgba(34,211,238,0.06));
  border-color: rgba(124,92,255,0.45);
  box-shadow: 0 0 0 1px rgba(124,92,255,0.25), 0 14px 40px -16px rgba(124,92,255,0.5);
}
.range-item.latest .range-arrow { color: var(--accent-2); }

/* ---------- Collapsible token cards (wallet detail) ---------- */
.token-head { cursor: pointer; }
.token-body { display: none; }
.token-card.open .token-body { display: block; }
.token-chevron { display: inline-grid; place-items: center; transition: transform 0.22s ease; }
.token-card.open .token-chevron { transform: rotate(180deg); }

/* Done range — emerald highlight (driven by the internal API) */
.range-item.done {
  background: linear-gradient(100deg, rgba(52,211,153,0.16), rgba(34,211,238,0.05));
  border-color: rgba(52,211,153,0.4);
  box-shadow: 0 0 0 1px rgba(52,211,153,0.22), 0 14px 40px -16px rgba(52,211,153,0.45);
}
.range-item.done .range-arrow { color: var(--accent-3); }

/* ---------- Filter chips ---------- */
.chip {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: var(--glass);
  border: 1px solid var(--stroke);
  color: var(--text-mid);
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.chip:hover { color: var(--text-hi); border-color: var(--stroke-strong); }
.chip.chip-on {
  color: #fff;
  background: linear-gradient(100deg, rgba(124, 92, 255, 0.3), rgba(34, 211, 238, 0.12));
  border-color: rgba(124, 92, 255, 0.4);
}

/* ---------- Spinner ---------- */
.spinner {
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  display: inline-block;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Toggle switch (settings) ---------- */
.switch {
  width: 44px; height: 25px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--stroke);
  position: relative;
  cursor: pointer;
  transition: background 0.25s ease;
  flex: none;
}
.switch::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 19px; height: 19px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}
.switch.on { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border-color: transparent; }
.switch.on::after { transform: translateX(19px); }

/* ---------- Settings tab rail ---------- */
.tab {
  display: flex; align-items: center; gap: 0.7rem;
  padding: 0.65rem 0.85rem;
  border-radius: 11px;
  color: var(--text-mid);
  font-size: 0.9rem; font-weight: 500;
  cursor: pointer;
  transition: all 0.18s ease;
}
.tab:hover { color: var(--text-hi); background: var(--glass); }
.tab.active { color: #fff; background: linear-gradient(100deg, rgba(124,92,255,.22), rgba(34,211,238,.08)); border: 1px solid rgba(124,92,255,.25); }

/* checkbox */
.checkbox {
  appearance: none;
  width: 18px; height: 18px;
  border-radius: 6px;
  border: 1px solid var(--stroke-strong);
  background: var(--glass);
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
}
.checkbox:checked { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border-color: transparent; }
.checkbox:checked::after {
  content: "✓";
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-size: 12px; color: #fff; font-weight: 700;
}