/* ===== Nút ===== */
.btn{--pad-y:.7rem;--pad-x:1.35rem;position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:44px;padding:var(--pad-y) var(--pad-x);border-radius:999px;border:1.5px solid transparent;font-weight:600;font-size:.95rem;text-decoration:none;line-height:1.2;transition:transform .2s var(--ease),box-shadow .2s,background .2s,color .2s,border-color .2s;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--btn-from),var(--btn-to));color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 8px 16px -8px rgba(165,47,24,.65)}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 12px 20px -8px rgba(165,47,24,.7)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{color:var(--text);border-color:var(--accent)}
.btn-outline{border-color:var(--accent);color:var(--accent);background:transparent}
.btn-outline:hover{background:var(--accent);color:#fff}
.btn-danger{background:var(--err);color:#fff}.btn-danger:hover{color:#fff;filter:brightness(.92)}
.btn-light{background:#FFF3E3;color:#1F1410}.btn-light:hover{color:#1F1410;transform:translateY(-1px)}
.btn-outline-light{border-color:rgba(255,243,227,.5);color:#FFF3E3;background:transparent}.btn-outline-light:hover{background:rgba(255,243,227,.12);color:#fff}
.btn-sm{--pad-y:.45rem;--pad-x:1rem;font-size:.875rem;min-height:40px}
.btn-lg{--pad-y:.9rem;--pad-x:1.8rem;font-size:1rem}
.btn-block{display:flex;width:100%}
.btn[disabled],.btn.is-loading{opacity:.7;pointer-events:none}
.btn.is-loading::after{content:"";width:1em;height:1em;border-radius:50%;border:2px solid currentColor;border-right-color:transparent;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center}
.icon-btn{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--text);padding:0;transition:background .2s,border-color .2s}
.icon-btn:hover{border-color:var(--accent)}

/* ===== Chip / nhãn ===== */
.chip{display:inline-flex;align-items:center;gap:.35rem;min-height:36px;padding:.25rem .9rem;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--text);font-size:.875rem;text-decoration:none;font-weight:500;white-space:nowrap;transition:background .2s,border-color .2s,color .2s}
.chip:hover,.chip.is-active,.chip[aria-selected=true]{background:var(--accent);border-color:var(--accent);color:#fff}
.chip-dark{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.2);color:var(--dark-text)}
.chip-list{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;margin:1rem 0}
.chip-list-links a{display:inline-flex;align-items:center;min-height:36px;padding:.25rem .9rem;border-radius:999px;border:1px solid var(--line);color:var(--text);text-decoration:none;font-size:.875rem;font-weight:500}
.chip-list-links a:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.badge{display:inline-block;align-self:flex-start;padding:.15rem .65rem;border-radius:999px;background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);font-size:.75rem;font-weight:600;text-decoration:none}

/* ===== Thẻ ===== */
.card{position:relative;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:box-shadow .25s,transform .25s var(--ease);height:100%}
@media (hover:hover){.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}}
.card-media{display:block;aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt)}
.card-media img,.card-media svg{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
@media (hover:hover){.card:hover .card-media img,.card:hover .card-media svg{transform:scale(1.04)}}
.card-body{display:flex;flex-direction:column;gap:.45rem;padding:1rem 1.1rem 1.1rem;flex:1}
.card-title{font-size:1.15rem;line-height:1.3;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a{color:var(--text);text-decoration:none}
.card-title a::after{content:"";position:absolute;inset:0;z-index:1}
.card-title a:hover{color:var(--accent)}
.card-excerpt{color:var(--muted);font-size:.875rem;line-height:1.55;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;flex-wrap:wrap;gap:.35rem 1rem;list-style:none;margin:auto 0 0;padding:.7rem 0 0;border-top:1px solid var(--line);color:var(--muted);font-size:.8125rem}
.card-body>.excerpt+.meta-row,.card-excerpt+.meta-row{margin-top:auto}
.meta-row li,.meta-row span,.meta-row time{display:inline-flex;align-items:center;gap:.3rem}
.card .badge,.card .fav-btn{position:relative;z-index:2}
.fav-btn{display:inline-flex;align-items:center;gap:.4rem;border:1px solid var(--line);background:var(--surface);border-radius:999px;min-width:44px;min-height:44px;justify-content:center;padding:0 .9rem;color:var(--text);transition:transform .2s,color .2s,background .2s}
.card .fav-btn{position:absolute;top:.6rem;right:.6rem;padding:0;width:40px;height:40px;min-width:40px;min-height:40px;z-index:3;background:color-mix(in srgb,var(--surface) 88%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.fav-btn[aria-pressed=true]{color:#fff;background:var(--tomato);border-color:var(--tomato)}
.fav-btn[aria-pressed=true] .icon{fill:currentColor}
.fav-btn:hover{transform:scale(1.05)}

/* ===== Form ===== */
.field{display:block;margin-bottom:1rem}
.field>span:first-child,.field>label,label.field>span:first-child{display:block;font-weight:600;font-size:.875rem;margin-bottom:.35rem}
input[type=text],input[type=email],input[type=password],input[type=search],input[type=url],input[type=number],input[type=file],select,textarea{width:100%;min-height:48px;padding:.7rem 1rem;border-radius:var(--radius-sm);border:1.5px solid var(--line);background:var(--surface);color:var(--text);font-size:1rem;transition:border-color .2s,box-shadow .2s}
input[type=file]{padding:.55rem .75rem;font-size:.9rem}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 18%,transparent);outline:none}
.check{display:flex;gap:.6rem;align-items:flex-start;font-size:.875rem;margin:.5rem 0 1rem}
.check input{width:20px;height:20px;min-height:0;margin-top:.2rem;accent-color:var(--accent);flex:none}
.pw-wrap{position:relative;display:block}.pw-wrap input{padding-right:5rem}
.pw-toggle{position:absolute;right:.4rem;top:50%;transform:translateY(-50%);min-height:36px;padding:0 .8rem;border:0;background:transparent;color:var(--accent);font-weight:600;border-radius:8px}
.pw-meter{display:block;margin-top:.4rem}.pw-meter i{display:block;height:4px;border-radius:4px;background:var(--line);position:relative;overflow:hidden}
.pw-meter i::after{content:"";position:absolute;inset:0;width:var(--w,0);background:var(--c,var(--err));transition:width .3s}
.pw-meter small{color:var(--muted)}
.row-between{display:flex;justify-content:space-between;gap:1rem;align-items:center;flex-wrap:wrap;margin-bottom:1rem}
.alert{padding:.8rem 1rem;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface);margin-bottom:1rem;font-size:.875rem}
.alert-error{border-color:var(--err);color:var(--err);background:color-mix(in srgb,var(--err) 7%,var(--surface))}
.alert-success{border-color:var(--ok);color:var(--ok);background:color-mix(in srgb,var(--ok) 8%,var(--surface))}
.divider{display:flex;align-items:center;gap:.75rem;color:var(--muted);margin:1.2rem 0;font-size:.875rem}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}

/* ===== Đường dẫn / phân trang / tải thêm ===== */
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:.25rem .5rem;list-style:none;font-size:.8125rem;color:var(--muted);margin:0 0 .9rem}
.breadcrumb li+li::before{content:"/";margin-right:.5rem;opacity:.5}
.breadcrumb a{color:var(--muted);text-decoration:none}.breadcrumb a:hover{color:var(--accent)}
.pagination{margin-top:2.5rem}.pagination ul{display:flex;flex-wrap:wrap;gap:.4rem;list-style:none;justify-content:center}
.pagination .page-numbers{display:inline-grid;place-items:center;min-width:44px;min-height:44px;padding:0 .9rem;border-radius:999px;border:1px solid var(--line);background:var(--surface);text-decoration:none;color:var(--text);font-weight:600}
.pagination .current,.pagination a:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.load-more{display:grid;justify-items:center;gap:.6rem;margin-top:2.25rem}
.load-more small{color:var(--muted)}
.load-more .meter{width:min(240px,60%);height:3px;border-radius:3px;background:var(--line);overflow:hidden}
.load-more .meter i{display:block;height:100%;width:var(--p,0%);background:var(--accent);transition:width .4s var(--ease)}

/* ===== Tab / accordion ===== */
.tablist{display:flex;gap:.5rem;overflow-x:auto;scrollbar-width:none;margin-bottom:1rem;padding-bottom:2px}
.tablist::-webkit-scrollbar{display:none}
.tablist [role=tab]{display:inline-flex;gap:.5rem;align-items:center;min-height:44px;padding:.5rem 1.1rem;border-radius:999px;border:1px solid var(--line);background:var(--surface);white-space:nowrap;font-weight:500}
.tablist [aria-selected=true]{background:var(--accent);color:#fff;border-color:var(--accent)}
.tablist .num{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:rgba(255,255,255,.22);font-size:.75rem}
.tabpanel{padding:1.4rem 1.6rem}.tabpanel h3{margin-bottom:.4rem}.tabpanel p{margin:0;color:var(--muted)}
.accordion{display:grid;gap:.6rem}
.accordion details{padding:0}
.accordion summary{cursor:pointer;list-style:none;padding:1rem 3rem 1rem 1.25rem;font-weight:600;position:relative;min-height:48px}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary::after{content:"+";position:absolute;right:1.25rem;top:50%;transform:translateY(-50%);font-size:1.4rem;color:var(--accent);transition:transform .25s}
.accordion details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.accordion details p{padding:0 1.25rem 1.1rem;margin:0;color:var(--muted)}

/* ===== Toast / modal ===== */
.toast-region{position:fixed;left:50%;bottom:calc(var(--bar-h) + 12px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:900;display:grid;gap:.5rem;width:min(92vw,380px);pointer-events:none}
@media (min-width:1024px){.toast-region{bottom:24px}}
.toast{pointer-events:auto;padding:.8rem 1.1rem;border-radius:var(--radius-sm);background:var(--coal);color:#FFF3E3;box-shadow:0 12px 30px rgba(0,0,0,.3);animation:toast-in .3s var(--ease);font-size:.875rem}
.toast.toast-error{background:#7A1A14}.toast.toast-success{background:#1F4D2D}
@keyframes toast-in{from{opacity:0;transform:translateY(10px)}}
.modal-backdrop{position:fixed;inset:0;background:rgba(20,10,6,.55);z-index:950;display:grid;place-items:center;padding:1rem}
.modal{max-width:520px;width:100%;padding:1.5rem}