/* A4A v1 · Tokens → scoped base → reusable components. No framework required. */
.a4a-btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-block-size:var(--a4a-control-md);padding:.6rem 1.2rem;border:1px solid transparent;border-radius:var(--a4a-radius-md);font-size:var(--a4a-text-sm);font-weight:700;line-height:1.5;text-decoration:none;background:var(--a4a-primary);color:var(--a4a-on-primary);transition:background var(--a4a-duration-fast),box-shadow var(--a4a-duration-fast),transform var(--a4a-duration-fast)}
.a4a-btn:hover{background:var(--a4a-primary-hover)}.a4a-btn:active{background:var(--a4a-primary-active);transform:translateY(1px)}
.a4a-btn--gradient{background:var(--a4a-gradient);color:#fff;box-shadow:0 6px 18px rgba(31,30,255,.16)}.a4a-btn--gradient:hover{background:var(--a4a-gradient);box-shadow:0 8px 24px rgba(31,30,255,.28)}
.a4a-btn--secondary{background:var(--a4a-surface);border-color:var(--a4a-primary);color:var(--a4a-primary)}.a4a-btn--secondary:hover,.a4a-btn--secondary:active{background:var(--a4a-primary-soft)}
.a4a-btn--soft{background:var(--a4a-primary-soft);color:var(--a4a-primary)}.a4a-btn--soft:hover,.a4a-btn--soft:active{background:var(--a4a-primary-soft-hover)}
.a4a-btn--ghost{background:transparent;color:var(--a4a-text-secondary)}.a4a-btn--ghost:hover,.a4a-btn--ghost:active{background:var(--a4a-surface-subtle);color:var(--a4a-text)}
.a4a-btn--danger{background:var(--a4a-danger);color:var(--a4a-surface)}.a4a-btn--danger:hover,.a4a-btn--danger:active{background:var(--a4a-danger-hover)}
.a4a-btn--sm{min-block-size:var(--a4a-control-sm);padding:.35rem .8rem}.a4a-btn--lg{min-block-size:var(--a4a-control-lg);padding:.8rem 1.5rem;font-size:1rem}
.a4a-btn--icon{inline-size:var(--a4a-control-md);padding:.5rem;flex-shrink:0}.a4a-btn--block{inline-size:100%}
.a4a-btn:disabled,.a4a-btn[aria-disabled=true]{background:var(--a4a-border);border-color:var(--a4a-border);color:var(--a4a-text-disabled);box-shadow:none;transform:none;cursor:not-allowed}
.a4a-btn[aria-busy=true]{cursor:progress}.a4a-spinner{display:inline-block;inline-size:1rem;block-size:1rem;border:2px solid currentColor;border-inline-end-color:transparent;border-radius:50%;animation:a4a-spin .8s linear infinite}@keyframes a4a-spin{to{transform:rotate(360deg)}}
.a4a-badge{display:inline-flex;align-items:center;gap:.35rem;inline-size:fit-content;border-radius:var(--a4a-radius-pill);padding:.2rem .65rem;font-size:var(--a4a-text-xs);font-weight:700;line-height:1.7;background:var(--a4a-primary-soft);color:var(--a4a-primary)}
.a4a-badge--success{background:var(--a4a-success-soft);color:var(--a4a-success)}.a4a-badge--warning{background:var(--a4a-warning-soft);color:var(--a4a-warning)}.a4a-badge--danger{background:var(--a4a-danger-soft);color:var(--a4a-danger)}.a4a-badge--neutral{background:var(--a4a-bg);color:var(--a4a-text-secondary)}.a4a-badge .a4a-icon{inline-size:.9rem;block-size:.9rem}
.a4a-chip{display:inline-flex;align-items:center;gap:.35rem;padding:.4rem .8rem;min-block-size:2.75rem;border:1px solid var(--a4a-border-strong);border-radius:var(--a4a-radius-pill);background:var(--a4a-surface);color:var(--a4a-text);font-size:.875rem}.a4a-chip[aria-pressed=true]{border-color:var(--a4a-primary);color:var(--a4a-primary);background:var(--a4a-primary-soft)}
.a4a-avatar{display:inline-flex;align-items:center;justify-content:center;inline-size:2.75rem;block-size:2.75rem;flex-shrink:0;border-radius:50%;background:var(--a4a-primary-soft);color:var(--a4a-primary);font-weight:800;overflow:hidden}
.a4a-card{background:var(--a4a-surface);border:1px solid var(--a4a-border);border-radius:var(--a4a-radius-xl);box-shadow:var(--a4a-shadow-sm);overflow:hidden;min-inline-size:0}.a4a-card__body{padding:var(--a4a-space-6)}.a4a-card__header,.a4a-card__footer{padding:var(--a4a-space-4) var(--a4a-space-6);display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.a4a-card__header{border-block-end:1px solid var(--a4a-border)}.a4a-card__footer{border-block-start:1px solid var(--a4a-border);background:var(--a4a-surface-subtle)}
.a4a-field{display:flex;flex-direction:column;gap:.5rem;min-inline-size:0}.a4a-label{font-size:.875rem;font-weight:700}.a4a-required{color:var(--a4a-danger)}.a4a-help{font-size:.875rem;color:var(--a4a-text-secondary);line-height:1.7}.a4a-error{font-size:.875rem;color:var(--a4a-danger)}
.a4a-input,.a4a-select,.a4a-textarea{inline-size:100%;min-inline-size:0;min-block-size:var(--a4a-control-md);border:1px solid var(--a4a-border-strong);border-radius:var(--a4a-radius-md);padding:.65rem .9rem;background:var(--a4a-surface);color:var(--a4a-text);font-size:1rem;line-height:1.5;transition:border-color var(--a4a-duration-fast)}
.a4a-input::placeholder,.a4a-textarea::placeholder{color:var(--a4a-text-secondary);opacity:1}.a4a-input:hover,.a4a-select:hover,.a4a-textarea:hover{border-color:var(--a4a-text-secondary)}
.a4a-input:focus,.a4a-select:focus,.a4a-textarea:focus{border-color:var(--a4a-primary)}
.a4a-input[aria-invalid=true],.a4a-select[aria-invalid=true],.a4a-textarea[aria-invalid=true]{border:2px solid var(--a4a-danger)}
.a4a-input:disabled,.a4a-select:disabled,.a4a-textarea:disabled{background:var(--a4a-bg);color:var(--a4a-text-disabled)}.a4a-input[readonly]{background:var(--a4a-surface-subtle)}
.a4a-textarea{resize:vertical;min-block-size:7rem}.a4a-input-wrap{display:flex;align-items:center;position:relative}.a4a-input-wrap>.a4a-icon{position:absolute;inset-inline-start:.9rem;color:var(--a4a-text-secondary);pointer-events:none}.a4a-input-wrap>.a4a-input{padding-inline-start:2.8rem}.a4a-input-wrap>.a4a-btn{position:absolute;inset-inline-end:1px}.a4a-input-wrap:has(>.a4a-btn)>.a4a-input{padding-inline-end:3.1rem}
.a4a-choice{display:flex;align-items:flex-start;gap:.7rem;font-size:.875rem;cursor:pointer;min-block-size:2.75rem;padding-block:.5rem}.a4a-choice input{accent-color:var(--a4a-primary);inline-size:1.15rem;block-size:1.15rem;margin:0;margin-block-start:.25rem;flex-shrink:0}
.a4a-switch{display:flex;align-items:center;gap:.75rem;cursor:pointer;min-block-size:2.75rem;font-size:.875rem}.a4a-switch input{appearance:none;position:relative;inline-size:2.8rem;block-size:1.65rem;border:1px solid var(--a4a-border-strong);border-radius:99px;background:var(--a4a-border);margin:0;cursor:pointer;transition:background .2s}.a4a-switch input::after{content:'';position:absolute;inline-size:1.15rem;block-size:1.15rem;inset-block-start:.18rem;inset-inline-start:.2rem;border-radius:50%;background:var(--a4a-surface);box-shadow:0 1px 3px #0002;transition:inset-inline-start .2s}.a4a-switch input:checked{background:var(--a4a-primary);border-color:var(--a4a-primary)}.a4a-switch input:checked::after{inset-inline-start:1.3rem}.a4a-switch input:disabled{opacity:.5;cursor:not-allowed}
.a4a-fieldset{border:0;padding:0;margin:0;min-inline-size:0}.a4a-fieldset legend{font-size:.875rem;font-weight:700;margin-block-end:.75rem}
.a4a-plan{position:relative;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem;border:1px solid var(--a4a-border-strong);border-radius:var(--a4a-radius-md);background:var(--a4a-surface);cursor:pointer;font-size:.875rem}.a4a-plan:has(input:checked){border:2px solid var(--a4a-primary);padding:calc(1rem - 1px);background:var(--a4a-primary-soft)}.a4a-plan input{accent-color:var(--a4a-primary);inline-size:1.1rem;block-size:1.1rem;margin:0;flex-shrink:0}.a4a-plan__text{flex:1}.a4a-plan__text small{display:block;color:var(--a4a-text-secondary);margin-block-start:.2rem}
.a4a-alert{display:flex;align-items:flex-start;gap:.75rem;padding:1rem;border:1px solid var(--a4a-primary-border);border-radius:var(--a4a-radius-md);background:var(--a4a-info-soft);color:var(--a4a-info);font-size:.875rem}.a4a-alert>.a4a-icon{margin-block-start:.25rem}.a4a-alert strong{display:block}.a4a-alert--success{background:var(--a4a-success-soft);color:var(--a4a-success);border-color:currentColor}.a4a-alert--warning{background:var(--a4a-warning-soft);color:var(--a4a-warning);border-color:currentColor}.a4a-alert--danger{background:var(--a4a-danger-soft);color:var(--a4a-danger);border-color:currentColor}
.a4a-toast-region{position:fixed;inset-block-end:1.5rem;inset-inline-end:1.5rem;inline-size:min(24rem,calc(100vw - 3rem));z-index:var(--a4a-z-toast);display:grid;gap:.75rem;pointer-events:none}.a4a-toast{display:flex;align-items:center;gap:.75rem;padding:.8rem 1rem;background:var(--a4a-surface-raised);color:var(--a4a-text);border:1px solid var(--a4a-border-strong);border-radius:var(--a4a-radius-lg);box-shadow:var(--a4a-shadow-lg);font-size:.875rem;pointer-events:auto}.a4a-toast>.a4a-icon{color:var(--a4a-success)}.a4a-toast>span{flex:1}
.a4a-dialog{inline-size:min(30rem,calc(100% - 2rem));max-block-size:calc(100dvh - 2rem);border:1px solid var(--a4a-border);border-radius:var(--a4a-radius-xl);padding:0;color:var(--a4a-text);background:var(--a4a-surface);box-shadow:var(--a4a-shadow-lg);overflow:auto}.a4a-dialog::backdrop{background:var(--a4a-overlay)}.a4a-dialog__head{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1.25rem 1.5rem;border-block-end:1px solid var(--a4a-border)}.a4a-dialog__body{padding:1.5rem}.a4a-dialog__actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.75rem;padding:1rem 1.5rem;background:var(--a4a-surface-subtle);border-block-start:1px solid var(--a4a-border)}
.a4a-drawer{margin:0;margin-inline-start:auto;block-size:100dvh;max-block-size:100dvh;border-radius:0;inline-size:min(26rem,calc(100% - 1rem));inset-inline-end:0}.a4a-drawer:dir(rtl){margin-inline-start:auto;margin-inline-end:0}
.a4a-tabs__list{display:flex;gap:.5rem;border-block-end:1px solid var(--a4a-border);overflow-x:auto}.a4a-tab{flex-shrink:0;min-block-size:2.75rem;padding:.7rem 1rem;border:0;border-block-end:2px solid transparent;background:transparent;color:var(--a4a-text-secondary);font-size:.875rem;font-weight:700}.a4a-tab[aria-selected=true]{color:var(--a4a-primary);border-block-end-color:var(--a4a-primary)}.a4a-tabpanel{padding-block:1.5rem}
.a4a-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem;font-size:.875rem;color:var(--a4a-text-secondary);list-style:none;padding:0}.a4a-breadcrumb a{text-decoration:none}.a4a-breadcrumb .a4a-icon{inline-size:1rem;block-size:1rem}
.a4a-pagination{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.a4a-pagination a{display:inline-flex;align-items:center;justify-content:center;min-inline-size:2.75rem;min-block-size:2.75rem;padding:.5rem;border:1px solid var(--a4a-border-strong);border-radius:.65rem;color:var(--a4a-text);text-decoration:none;font-size:.875rem}.a4a-pagination [aria-current=page]{background:var(--a4a-primary);color:var(--a4a-on-primary);border-color:var(--a4a-primary)}
.a4a-steps{display:flex;gap:.8rem;list-style:none;padding:0;counter-reset:step;flex-wrap:wrap}.a4a-steps li{display:flex;gap:.55rem;align-items:center;flex:1;font-size:.875rem;white-space:nowrap;color:var(--a4a-text-secondary)}.a4a-steps li::before{content:counter(step);counter-increment:step;display:grid;place-items:center;inline-size:2rem;block-size:2rem;border:1px solid var(--a4a-border-strong);border-radius:50%;font-weight:700}.a4a-steps li[aria-current=step]{color:var(--a4a-primary);font-weight:700}.a4a-steps li[aria-current=step]::before{background:var(--a4a-primary);color:var(--a4a-on-primary);border-color:var(--a4a-primary)}
.a4a-accordion{border:1px solid var(--a4a-border);border-radius:var(--a4a-radius-lg);overflow:hidden}.a4a-accordion details+details{border-block-start:1px solid var(--a4a-border)}.a4a-accordion summary{padding:1rem 1.25rem;cursor:pointer;font-weight:700;font-size:.875rem}.a4a-accordion details[open] summary{color:var(--a4a-primary);background:var(--a4a-primary-soft)}.a4a-accordion__body{padding:1rem 1.25rem;font-size:.875rem;color:var(--a4a-text-secondary)}
.a4a-tooltip-wrap{position:relative;display:inline-flex}.a4a-tooltip{visibility:hidden;opacity:0;position:absolute;inset-block-end:calc(100% + .65rem);inset-inline-start:50%;transform:translateX(-50%);inline-size:max-content;max-inline-size:14rem;background:var(--a4a-text);color:var(--a4a-surface);padding:.5rem .7rem;border-radius:.5rem;font-size:.75rem;z-index:var(--a4a-z-popover)}.a4a-tooltip-wrap:dir(rtl) .a4a-tooltip{transform:translateX(50%)}.a4a-tooltip::after{content:'';position:absolute;inset-block-start:100%;inset-inline:0;block-size:.7rem}.a4a-tooltip-wrap:hover .a4a-tooltip,.a4a-tooltip-wrap:focus-within .a4a-tooltip{visibility:visible;opacity:1}.a4a-tooltip[data-dismissed]{visibility:hidden!important;opacity:0!important}
.a4a-dropdown{position:relative;inline-size:fit-content}.a4a-dropdown summary{list-style:none}.a4a-dropdown summary::-webkit-details-marker{display:none}.a4a-dropdown__panel{position:absolute;inset-block-start:calc(100% + .5rem);inset-inline-start:0;min-inline-size:13rem;max-inline-size:calc(100vw - 3rem);padding:.5rem;background:var(--a4a-surface-raised);border:1px solid var(--a4a-border);border-radius:.75rem;box-shadow:var(--a4a-shadow-md);z-index:var(--a4a-z-popover)}.a4a-dropdown__panel a,.a4a-dropdown__panel button{display:flex;align-items:center;gap:.6rem;inline-size:100%;padding:.65rem .75rem;min-block-size:2.75rem;background:transparent;border:0;text-decoration:none;text-align:start;color:var(--a4a-text);font-size:.875rem;border-radius:.5rem}.a4a-dropdown__panel :is(a,button):hover{background:var(--a4a-primary-soft);color:var(--a4a-primary)}
.a4a-table-wrap{overflow:auto;border:1px solid var(--a4a-border);border-radius:var(--a4a-radius-lg)}.a4a-table{inline-size:100%;border-collapse:collapse;text-align:start;font-size:.875rem}.a4a-table th,.a4a-table td{padding:1rem;text-align:start;border-block-end:1px solid var(--a4a-border);vertical-align:middle}.a4a-table th{color:var(--a4a-text-secondary);font-weight:500;background:var(--a4a-surface-subtle);white-space:nowrap}.a4a-table tr:last-child td{border-block-end:0}.a4a-table caption{text-align:start;padding:1rem;font-weight:700}.a4a-table tbody tr:hover{background:var(--a4a-surface-subtle)}
.a4a-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.75rem;min-block-size:13rem;padding:2rem;text-align:center}.a4a-empty h3{font-size:1rem}.a4a-empty p{max-inline-size:28rem;font-size:.875rem;color:var(--a4a-text-secondary)}
.a4a-skeleton{display:block;min-block-size:1rem;background:var(--a4a-border);border-radius:.4rem;animation:a4a-pulse 1.5s ease-in-out infinite}.a4a-skeleton--image{block-size:7rem;border-radius:1rem}.a4a-skeleton--short{inline-size:60%}@keyframes a4a-pulse{50%{opacity:.4}}
.a4a-progress{inline-size:100%;block-size:.65rem;border:0;border-radius:99px;overflow:hidden;accent-color:var(--a4a-primary);background:var(--a4a-border)}.a4a-progress::-webkit-progress-bar{background:var(--a4a-border)}.a4a-progress::-webkit-progress-value{background:var(--a4a-primary);border-radius:99px}.a4a-progress::-moz-progress-bar{background:var(--a4a-primary)}
.a4a-product{display:flex;flex-direction:column;padding:1rem;gap:1rem}.a4a-product__media{position:relative;background:var(--a4a-surface-subtle);border-radius:var(--a4a-radius-lg);overflow:hidden}.a4a-product__media img{inline-size:100%;aspect-ratio:1/1;object-fit:cover}.a4a-product__media>.a4a-badge{position:absolute;inset-block-start:.75rem;inset-inline-start:.75rem}.a4a-product__body{display:flex;flex-direction:column;gap:.5rem;flex:1}.a4a-product__body h3{font-size:1rem}.a4a-product__body a{color:var(--a4a-text);text-decoration:none}.a4a-product__footer{display:flex;align-items:center;justify-content:space-between;gap:.5rem;flex-wrap:wrap}.a4a-product--compact{display:grid;grid-template-columns:4rem 1fr;align-items:center;padding:1rem;gap:1rem}.a4a-product--compact img{inline-size:4rem;block-size:4rem;object-fit:cover;border-radius:.9rem}
.a4a-stat{padding:1.5rem;display:flex;justify-content:space-between;gap:1rem;align-items:flex-start}.a4a-stat strong{display:block;font-size:1.75rem;line-height:1.4;margin-block:.4rem}.a4a-stat p{font-size:.875rem;color:var(--a4a-text-secondary)}
.a4a-quantity{display:inline-flex;align-items:center;border:1px solid var(--a4a-border-strong);border-radius:.75rem;overflow:hidden;direction:ltr}.a4a-quantity button{background:var(--a4a-surface);color:var(--a4a-primary);border:0;inline-size:2.75rem;min-block-size:2.75rem;font-size:1.2rem}.a4a-quantity button:disabled{color:var(--a4a-text-disabled)}.a4a-quantity output{min-inline-size:2.5rem;text-align:center;font-variant-numeric:tabular-nums;font-size:.875rem}
.a4a-upload{border:1px dashed var(--a4a-border-strong);border-radius:1rem;padding:1.5rem;text-align:center;background:var(--a4a-surface-subtle)}.a4a-upload input{max-inline-size:100%;font-size:.875rem}.a4a-upload input::file-selector-button{font:inherit;background:var(--a4a-primary-soft);color:var(--a4a-primary);border:1px solid var(--a4a-primary-border);border-radius:.5rem;padding:.6rem;margin-inline-end:.7rem;cursor:pointer}
.a4a-header{background:var(--a4a-surface);border-block-end:1px solid var(--a4a-border);padding-block:1rem}.a4a-header__inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;flex-wrap:wrap}.a4a-header__brand{display:flex;gap:.75rem;align-items:center;text-decoration:none;color:var(--a4a-text);font-weight:800}.a4a-header__brand img{inline-size:2.5rem;block-size:2.5rem}.a4a-header nav{display:flex;flex-wrap:wrap;align-items:center;gap:1.5rem}.a4a-header nav a{font-size:.875rem;text-decoration:none;color:var(--a4a-text-secondary);padding-block:.5rem}.a4a-header nav [aria-current=page]{color:var(--a4a-primary)}
.a4a-sidebar-nav{display:flex;flex-direction:column;gap:.4rem;padding:1rem}.a4a-sidebar-nav a{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;min-block-size:2.75rem;border-radius:.75rem;font-size:.875rem;color:var(--a4a-text-secondary);text-decoration:none}.a4a-sidebar-nav a[aria-current=page]{background:var(--a4a-gradient);color:white}.a4a-sidebar-nav a:hover:not([aria-current]){background:var(--a4a-primary-soft);color:var(--a4a-primary)}
.a4a-article{max-inline-size:var(--a4a-layout-reading);margin-inline:auto}.a4a-article :where(p,ul,ol){margin-block:1rem;line-height:2}.a4a-article :where(h2,h3){margin-block:2rem 1rem}.a4a-article blockquote{border-inline-start:3px solid var(--a4a-primary);margin:1.5rem 0;padding:1rem 1.5rem;background:var(--a4a-primary-soft);border-radius:.75rem}
@media(max-width:40rem){.a4a-card__body{padding:1rem}.a4a-card__header,.a4a-card__footer{padding:1rem}.a4a-dialog__actions>*{flex:1}.a4a-header__inner{gap:1rem}.a4a-header nav{gap:1rem}.a4a-tooltip{max-inline-size:10rem}.a4a-table th,.a4a-table td{padding:.75rem}.a4a-btn--sm{min-block-size:2.75rem}}