.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:40px; padding:0 18px; border-radius:10px; border:1px solid transparent;
  font-size:14px; font-weight:600; white-space:nowrap; position:relative; overflow:hidden;
  transition:background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), transform var(--dur) var(--ease-spring), box-shadow var(--dur) var(--ease);
}
.btn:active{ transform:translateY(1px) scale(0.98); }
.btn-sm{ height:32px; padding:0 12px; font-size:13px; border-radius:8px; }
.btn-lg{ height:46px; padding:0 22px; font-size:15px; }
.btn-primary{
  background:var(--gradient-accent); color:var(--accent-contrast);
  box-shadow:var(--shadow-accent-glow);
}
.btn-primary::before{
  content:''; position:absolute; inset:0; border-radius:inherit;
  background:linear-gradient(180deg, rgba(255,255,255,0.22), rgba(255,255,255,0) 55%);
  opacity:1; pointer-events:none;
}
.btn-primary:hover{ background:var(--gradient-accent-hover); box-shadow:var(--shadow-accent-glow-lg); transform:translateY(-2px); }
.btn-primary:active{ box-shadow:var(--shadow-accent-glow); }
.btn-secondary{ background:var(--surface); color:var(--text-primary); border-color:var(--border-strong); box-shadow:var(--shadow-sm); }
.btn-secondary:hover{ background:var(--surface-hover); transform:translateY(-1px); box-shadow:var(--shadow-md); }
.btn-ghost{ background:transparent; color:var(--text-secondary); }
.btn-ghost:hover{ background:var(--surface-hover); color:var(--text-primary); }
.btn-danger{ background:var(--negative); color:#fff; }
.btn-danger:hover{ filter:brightness(0.93); }
.btn-success{ background:var(--positive); color:#fff; }
.btn-block{ width:100%; }
.btn-icon{
  display:inline-flex; align-items:center; justify-content:center;
  width:36px; height:36px; border-radius:9px; border:1px solid transparent;
  background:transparent; color:var(--text-secondary);
  transition:background var(--dur-fast), color var(--dur-fast);
}
.btn-icon:hover{ background:var(--surface-hover); color:var(--text-primary); }
[disabled], .btn[aria-disabled="true"]{ opacity:0.5; pointer-events:none; }

.card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg);
  padding:20px; box-shadow:var(--shadow-3d);
  transition:border-color var(--dur), box-shadow var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
  animation:cardIn var(--dur-slow) var(--ease) both;
}
.card-hover:hover{ border-color:var(--accent-border); box-shadow:var(--shadow-3d-hover); transform:translateY(-3px); }
.card-flush{ padding:0; overflow:hidden; }
.card-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:14px; gap:12px; }
.card-head h3{ font-size:15px; font-weight:600; }
.card-link{ font-size:13px; color:var(--accent); font-weight:600; display:inline-flex; align-items:center; gap:4px; transition:gap var(--dur) var(--ease), color var(--dur-fast); }
.card-link:hover{ color:var(--accent-hover); gap:7px; }

@keyframes cardIn{ from{ opacity:0; transform:translateY(10px); } to{ opacity:1; transform:translateY(0); } }

.grid{ display:grid; gap:16px; }
.grid-4{ grid-template-columns:repeat(4,1fr); }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }
.grid-main-side{ grid-template-columns:2fr 1fr; }
@media (max-width:1100px){ .grid-4{grid-template-columns:repeat(2,1fr);} .grid-main-side{grid-template-columns:1fr;} .grid-3{grid-template-columns:repeat(2,1fr);} }
@media (max-width:640px){ .grid-4,.grid-3,.grid-2{grid-template-columns:1fr;} }

.stat-card .stat-label{ font-size:12.5px; color:var(--text-secondary); font-weight:500; margin-bottom:6px; }
.stat-card .stat-value{ font-size:22px; font-weight:700; letter-spacing:-0.01em; font-family:var(--font-mono); }
.stat-card .stat-delta{ font-size:12.5px; font-weight:600; margin-top:6px; display:inline-flex; align-items:center; gap:4px; }

.badge{
  display:inline-flex; align-items:center; gap:5px; height:22px; padding:0 9px;
  border-radius:99px; font-size:11.5px; font-weight:600; letter-spacing:0.01em;
  background:var(--bg-subtle); color:var(--text-secondary); border:1px solid var(--border);
}
.badge-positive{ background:var(--positive-dim); color:var(--positive); border-color:var(--positive-border); }
.badge-negative{ background:var(--negative-dim); color:var(--negative); border-color:var(--negative-border); }
.badge-warning{ background:var(--warning-dim); color:var(--warning); border-color:var(--warning-dim); }
.badge-accent{ background:var(--accent-dim); color:var(--accent); border-color:var(--accent-border); }
.badge-new{ background:var(--accent); color:#fff; border-color:var(--accent); text-transform:uppercase; font-size:10px; height:18px; padding:0 7px; }
.dot{ width:6px; height:6px; border-radius:99px; background:currentColor; }

.field{ display:flex; flex-direction:column; gap:6px; }
.field label{ font-size:13px; font-weight:600; color:var(--text-primary); }
.field .hint{ font-size:12px; color:var(--text-tertiary); }
.field .error{ font-size:12px; color:var(--negative); display:none; }
.field.has-error .error{ display:block; }
.field.has-error input, .field.has-error select{ border-color:var(--negative); }
.input, select.input, textarea.input{
  height:42px; padding:0 14px; border-radius:9px; border:1px solid var(--border-strong);
  background:var(--surface); color:var(--text-primary); width:100%;
  transition:border-color var(--dur-fast), box-shadow var(--dur-fast);
}
textarea.input{ height:auto; padding:10px 14px; resize:vertical; min-height:90px; }
.input:focus, select.input:focus, textarea.input:focus{ outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-dim); }
.input-group{ position:relative; display:flex; align-items:center; }
.input-group .input{ padding-right:44px; }
.input-group .input-suffix{ position:absolute; right:6px; background:none; border:none; color:var(--text-tertiary); }
.checkbox-row{ display:flex; align-items:center; gap:8px; font-size:13.5px; color:var(--text-secondary); }
.checkbox-row input{ width:16px; height:16px; accent-color:var(--accent); }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
@media (max-width:640px){ .form-row{ grid-template-columns:1fr; } }

.segmented{ display:inline-flex; background:var(--bg-subtle); border:1px solid var(--border); border-radius:10px; padding:3px; gap:2px; }
.segmented button{ border:none; background:transparent; padding:7px 14px; border-radius:8px; font-size:13px; font-weight:600; color:var(--text-secondary); }
.segmented button.active{ background:var(--surface); color:var(--text-primary); box-shadow:var(--shadow-sm); }

.pay-method{ display:flex; align-items:center; gap:12px; padding:14px 16px; border:1px solid var(--border-strong); border-radius:12px; cursor:pointer; transition:border-color var(--dur-fast), background var(--dur-fast); }
.pay-method:hover{ background:var(--surface-hover); }
.pay-method.selected{ border-color:var(--accent); background:var(--accent-dim); }
.pay-method .icon{ width:38px; height:38px; border-radius:9px; background:var(--bg-subtle); display:flex; align-items:center; justify-content:center; font-size:16px; }
.pay-method .meta{ flex:1; }
.pay-method .meta .name{ font-weight:600; font-size:13.5px; }
.pay-method .meta .desc{ font-size:12px; color:var(--text-tertiary); }

.table-wrap{ overflow-x:auto; }
table.data-table{ width:100%; border-collapse:collapse; font-size:13.5px; }
.data-table thead th{
  text-align:left; font-size:11.5px; text-transform:uppercase; letter-spacing:0.03em;
  color:var(--text-tertiary); font-weight:600; padding:10px 14px; border-bottom:1px solid var(--border);
  position:sticky; top:0; background:var(--surface); white-space:nowrap; cursor:pointer; user-select:none;
}
.data-table thead th:hover{ color:var(--text-secondary); }
.data-table tbody td{ padding:12px 14px; border-bottom:1px solid var(--border); white-space:nowrap; }
.data-table tbody tr{ transition:background var(--dur-fast); }
.data-table tbody tr:hover{ background:var(--surface-hover); cursor:pointer; }
.data-table .num{ font-family:var(--font-mono); text-align:right; }
.data-table tfoot td{ padding:10px 14px; }

@media (max-width:720px){
  .data-table.responsive-cards thead{ display:none; }
  .data-table.responsive-cards, .data-table.responsive-cards tbody, .data-table.responsive-cards tr, .data-table.responsive-cards td{ display:block; width:100%; }
  .data-table.responsive-cards tr{ border:1px solid var(--border); border-radius:12px; margin-bottom:10px; padding:10px 4px; }
  .data-table.responsive-cards td{ display:flex; justify-content:space-between; border:none; padding:6px 10px; text-align:right; }
  .data-table.responsive-cards td::before{ content:attr(data-label); font-weight:600; color:var(--text-tertiary); font-size:11.5px; text-transform:uppercase; }
}

.modal-scrim{ position:fixed; inset:0; background:rgba(10,12,18,0.44); backdrop-filter:blur(2px); z-index:200; display:none; align-items:center; justify-content:center; padding:16px; }
.modal-scrim.open{ display:flex; }
.modal{ background:var(--surface); border-radius:16px; border:1px solid var(--border); width:100%; max-width:460px; max-height:90vh; overflow-y:auto; box-shadow:var(--shadow-lg); animation:modalIn 180ms var(--ease); }
.modal.modal-lg{ max-width:640px; }
@keyframes modalIn{ from{ opacity:0; transform:translateY(8px) scale(0.98);} to{opacity:1; transform:none;} }
.modal-head{ display:flex; align-items:center; justify-content:space-between; padding:18px 20px; border-bottom:1px solid var(--border); }
.modal-head h3{ font-size:16px; }
.modal-body{ padding:20px; display:flex; flex-direction:column; gap:14px; }
.modal-foot{ padding:16px 20px; border-top:1px solid var(--border); display:flex; gap:10px; justify-content:flex-end; }

.toast-stack{ position:fixed; bottom:20px; right:20px; z-index:400; display:flex; flex-direction:column; gap:10px; max-width:340px; }
@media (max-width:640px){ .toast-stack{ left:16px; right:16px; bottom:16px; max-width:none; } }
.toast{ background:var(--surface); border:1px solid var(--border-strong); border-radius:12px; padding:13px 15px; box-shadow:var(--shadow-lg); display:flex; gap:10px; align-items:flex-start; animation:toastIn 200ms var(--ease); }
@keyframes toastIn{ from{opacity:0; transform:translateY(8px);} to{opacity:1; transform:none;} }
.toast .icon{ width:20px; height:20px; border-radius:99px; display:flex; align-items:center; justify-content:center; flex-shrink:0; font-size:12px; color:#fff; }
.toast.success .icon{ background:var(--positive); }
.toast.error .icon{ background:var(--negative); }
.toast.info .icon{ background:var(--accent); }
.toast .msg{ font-size:13.5px; flex:1; }
.toast .close{ background:none; border:none; color:var(--text-tertiary); }

.empty-state{ display:flex; flex-direction:column; align-items:center; text-align:center; padding:48px 20px; color:var(--text-secondary); gap:10px; }
.empty-state .icon{ width:44px; height:44px; border-radius:12px; background:var(--bg-subtle); display:flex; align-items:center; justify-content:center; color:var(--text-tertiary); margin-bottom:4px; }
.empty-state .title{ font-weight:600; color:var(--text-primary); font-size:14.5px; }
.empty-state .desc{ font-size:13px; max-width:320px; }

.skel{ background:linear-gradient(90deg, var(--bg-subtle) 25%, var(--surface-hover) 50%, var(--bg-subtle) 75%); background-size:200% 100%; border-radius:8px; animation:skelShine 1.3s ease-in-out infinite; }
@keyframes skelShine{ 0%{background-position:200% 0;} 100%{background-position:-200% 0;} }

.tabs{ display:flex; gap:4px; border-bottom:1px solid var(--border); }
.tabs button{ background:none; border:none; padding:10px 4px; margin-right:18px; font-size:13.5px; font-weight:600; color:var(--text-secondary); border-bottom:2px solid transparent; }
.tabs button.active{ color:var(--text-primary); border-color:var(--accent); }

.progress{ height:7px; border-radius:99px; background:var(--bg-subtle); overflow:hidden; box-shadow:inset 0 1px 2px rgba(0,0,0,0.06); }
.progress > span{ display:block; height:100%; background:var(--gradient-accent); border-radius:99px; box-shadow:0 0 8px rgba(20, 102, 232,0.4); transition:width 500ms var(--ease-spring); }

[data-tooltip]{ position:relative; }
[data-tooltip]:hover::after{
  content:attr(data-tooltip); position:absolute; left:50%; top:calc(100% + 8px); transform:translateX(-50%);
  background:var(--text-primary); color:var(--bg); font-size:11.5px; padding:5px 9px; border-radius:6px; white-space:nowrap; z-index:50; font-weight:500;
}