/* =========================================================
   Slideshow Cưới — giao diện biên tập
   ========================================================= */
:root{
  --bg:#FFFDF9; --bg2:#F2EDE4; --panel:#FDFAF4; --panel2:#FFFFFF; --line:#E9E2D6; --line2:#8A8175;
  --ink:#2F2B24; --ink2:#5E574C; --ink3:#6F665A;
  --gold:#7E5F2C; --gold2:#61481F; --gold-ink:#FFF8EC; --rose:#8A8175; --danger:#B03A2B;
  --r:10px; --r-sm:7px;
  --f-ui:'Quicksand',ui-sans-serif,system-ui,'Segoe UI',sans-serif;
  --f-title:'Cormorant Garamond',Georgia,serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:500 13.5px/1.5 var(--f-ui);-webkit-font-smoothing:antialiased;overflow:hidden}
button,input,select,textarea{font:inherit;color:inherit}
[hidden]{display:none!important}
::selection{background:rgba(160,124,58,.22)}
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-thumb{background:#CFC5B3;border-radius:10px;border:3px solid transparent;background-clip:padding-box}
*::-webkit-scrollbar-track{background:transparent}

.app{display:grid;grid-template-columns:352px minmax(0,1fr);grid-template-rows:58px minmax(0,1fr);height:100vh}
/* Cột tinh chỉnh chỉ mở ra khi đang sửa một ảnh; lúc đó rộng 344px để
   các trường không bị bó. Không sửa ảnh thì toàn bộ chỗ đó trả cho khung xem. */
.app.has-sel{grid-template-columns:352px minmax(0,1fr) 344px}

/* ───── topbar ───── */
.topbar{grid-column:1/-1;display:flex;align-items:center;gap:20px;padding:0 18px;border-bottom:1px solid var(--line);background:linear-gradient(#FFFDF9,#F8F3EA)}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand__mark{font-size:26px;color:var(--gold);line-height:1;transform:translateY(-1px)}
.brand__text{display:flex;flex-direction:column;line-height:1.1;min-width:0}
.brand__text b{font:600 21px/1 var(--f-title);letter-spacing:.01em}
.brand__text small{color:var(--ink3);font-size:11.5px;margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar__right{margin-left:auto;display:flex;align-items:center;gap:14px}
.save-state{color:var(--ink3);font-size:12px;display:flex;align-items:center;gap:6px}
.save-state::before{content:'';width:6px;height:6px;border-radius:50%;background:#8A8175}
.save-state.is-saving::before{background:var(--gold)}

/* ───── buttons ───── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:8px 14px;border-radius:var(--r-sm);border:1px solid var(--line2);background:var(--panel2);cursor:pointer;text-decoration:none;white-space:nowrap;transition:background .15s,border-color .15s,transform .1s}
.btn:hover{background:#F4EFE6;border-color:#8A8175}
.btn:active{transform:translateY(1px)}
.btn:focus-visible,.seg button:focus-visible,.tabs button:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.btn--gold{background:linear-gradient(#3C362E,#2F2A23);color:var(--gold-ink);border-color:#2A251F;font-weight:700}
.btn--gold:hover{background:linear-gradient(#4A433A,#3A342C);border-color:#3A342C}
.btn--ghost{background:transparent}
.btn--sm{padding:6px 10px;font-size:12.5px}
.btn--danger{color:var(--danger)}
.btn--block{width:100%}
.btn:disabled{opacity:.62;cursor:not-allowed}
.icon-btn{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line2);background:var(--panel2);cursor:pointer;color:var(--ink)}
.icon-btn:hover{background:#F4EFE6}
.icon-btn svg{width:18px;height:18px}
.icon-btn--play{width:44px;height:44px;background:var(--gold);color:var(--gold-ink);border-color:var(--gold)}
.icon-btn--play:hover{background:var(--gold2)}
.icon-btn--play .i-pause{display:none}
.is-playing .icon-btn--play .i-play{display:none}
.is-playing .icon-btn--play .i-pause{display:block}

/* ───── segmented ───── */
.seg{display:inline-flex;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r-sm);padding:3px;gap:2px}
.seg button{border:0;background:transparent;padding:6px 11px;border-radius:5px;cursor:pointer;color:var(--ink2);display:flex;align-items:center;gap:6px;white-space:nowrap}
.seg button:hover{color:var(--ink)}
.seg button.is-on{background:var(--panel2);color:var(--ink);box-shadow:0 1px 0 rgba(255,255,255,.9) inset,0 1px 2px rgba(58,50,38,.14),0 0 0 1px rgba(58,50,38,.07)}
.seg--full{display:flex;width:100%}
.seg--full button{flex:1 1 0;min-width:0;justify-content:center;text-align:center;
  padding:6px 6px;white-space:normal;line-height:1.2}
.seg--stack button{flex-direction:column;gap:0;padding:7px 4px;line-height:1.2}
.seg--stack small{font-size:10.5px;color:var(--ink3);white-space:normal;text-align:center}
.seg--aspect button{font-size:12.5px}
.ar{display:inline-block;border:1.5px solid currentColor;border-radius:2px}
.ar--169{width:16px;height:9px}.ar--916{width:9px;height:14px}.ar--11{width:11px;height:11px}.ar--45{width:10px;height:12px}.ar--43{width:14px;height:10.5px}

/* ───── side ───── */
.side{display:grid;grid-template-columns:70px minmax(0,1fr);border-right:1px solid var(--line);min-height:0;background:var(--bg2)}
.tabs{display:flex;flex-direction:column;gap:4px;padding:10px 6px;border-right:1px solid var(--line)}
.tabs button{border:0;background:transparent;color:var(--ink3);border-radius:9px;padding:9px 2px 7px;display:flex;flex-direction:column;align-items:center;gap:3px;font-size:11px;cursor:pointer}
.tabs button span{font-size:17px;line-height:1.1;font-weight:700}
.tabs button:hover{color:var(--ink);background:var(--panel)}
.tabs button.is-on{color:var(--gold);background:var(--panel)}
.panels{overflow-y:auto;overflow-x:hidden;min-height:0;min-width:0}
.panel .btn--block,.dropzone .btn{white-space:normal;text-align:center;line-height:1.3}
.dropzone{min-width:0}
.panel{display:none;padding:16px 16px 48px;animation:panelIn .3s var(--ease)}
.panel.is-on{display:block}
@keyframes panelIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.panel h2{font:600 22px/1.15 var(--f-title);margin:4px 0 12px;display:flex;align-items:baseline;gap:8px}
.panel h2 em{font:500 12px var(--f-ui);color:var(--ink3);font-style:normal}
.panel h2:not(:first-child){margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
.panel h3{font:700 11px/1 var(--f-ui);letter-spacing:.12em;text-transform:uppercase;color:var(--ink3);
  margin:30px 0 12px;padding-top:22px;border-top:1px solid var(--line)}
.panel h2+h3,.panel h3:first-child{margin-top:0;padding-top:0;border-top:0}
.hint{color:var(--ink3);font-size:12px;margin:6px 0 10px}
.row{display:flex;gap:8px;margin:12px 0;align-items:stretch}
.row--wrap{flex-wrap:wrap}
/* Hai nút mỗi hàng, rộng bằng nhau — hết cảnh nút xuống dòng so le */
.panel .row--wrap>.btn{flex:0 1 calc(50% - 4px);min-width:0;
  white-space:normal;line-height:1.25;height:auto;min-height:33px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}

.field{display:block;margin:16px 0}
.field>span{display:flex;justify-content:space-between;align-items:baseline;gap:10px;
  color:var(--ink2);font-size:12.5px;margin-bottom:6px}
.field output{color:var(--gold);font-variant-numeric:tabular-nums;white-space:nowrap;flex:none}
.field input:not([type=range]),.field select,.field textarea{width:100%;background:var(--bg);border:1px solid var(--line2);border-radius:var(--r-sm);padding:8px 10px;outline:none;transition:border-color .15s}
.field textarea{resize:vertical;min-height:64px;line-height:1.45}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--gold)}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink3) 50%),linear-gradient(135deg,var(--ink3) 50%,transparent 50%);background-position:calc(100% - 15px) 50%,calc(100% - 10px) 50%;background-size:5px 5px;background-repeat:no-repeat;padding-right:28px}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:18px;background:transparent;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:4px;background:linear-gradient(90deg,var(--gold) var(--fill,50%),#E0D7C8 var(--fill,50%))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:#FFFFFF;margin-top:-6px;box-shadow:0 1px 2px rgba(58,50,38,.22),0 0 0 1px #8A8175}
.switch{display:flex;gap:11px;align-items:flex-start;margin:18px 0;cursor:pointer}
.switch input{position:absolute;opacity:0;pointer-events:none}
.switch i{flex:none;width:34px;height:20px;border-radius:20px;background:#8A8175;position:relative;transition:background .2s;margin-top:1px}
.switch i::after{content:'';position:absolute;left:3px;top:3px;width:14px;height:14px;border-radius:50%;background:#FFFFFF;transition:transform .2s var(--ease)}
.switch input:checked+i{background:var(--gold)}
.switch input:checked+i::after{transform:translateX(14px);background:#FFF8EC}
.switch input:focus-visible+i{outline:2px solid var(--gold);outline-offset:2px}
.switch span{display:flex;flex-direction:column;color:var(--ink);font-size:13px}
.switch small{color:var(--ink3);font-size:11.5px;margin-top:1px}
.fields{padding-left:2px}
.fields.is-off{opacity:.58;pointer-events:none}

.dropzone{border:1.5px dashed #8F8676;border-radius:var(--r);padding:16px;text-align:center;background:rgba(126,95,44,.05);display:grid;gap:8px}
.dropzone p{margin:0;color:var(--ink2)}
.dropzone small{color:var(--ink3);font-size:11px}
.dropzone.is-over{border-color:var(--gold);background:rgba(126,95,44,.10)}

/* chủ đề */
.themes{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.theme{position:relative;border:1px solid var(--line2);background:var(--panel);border-radius:var(--r);padding:0;overflow:hidden;cursor:pointer;text-align:left}
.theme canvas,.theme .theme__sw{display:block;width:100%;height:62px}
.theme__sw{background:var(--sw)}
.theme b{display:block;padding:8px 10px 0;font:600 16px/1.15 var(--f-title);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.theme small{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  padding:2px 10px 10px;color:var(--ink3);font-size:10.5px;line-height:1.35;height:calc(2*1.35em);box-sizing:content-box}
.theme.is-on{border-color:var(--gold);box-shadow:0 0 0 1px var(--gold)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line2);background:var(--panel);border-radius:40px;padding:5px 11px 5px 6px;display:flex;align-items:center;gap:7px;cursor:pointer;font-size:12.5px;color:var(--ink2)}
.chip i{width:18px;height:18px;border-radius:50%;background:var(--sw,#888);box-shadow:inset 0 0 0 1px rgba(47,43,36,.18)}
.chip.is-on{border-color:var(--gold);color:var(--ink);background:#F4EBDB}

/* thư viện chuyển cảnh */
.gallery{display:grid;gap:4px}
.gallery h4{grid-column:1/-1;margin:22px 0 6px;font:700 10.5px/1 var(--f-ui);letter-spacing:.12em;text-transform:uppercase;color:var(--ink3)}
.gallery__grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.tcard{position:relative;border:1px solid var(--line2);border-radius:9px;background:var(--panel);padding:0;overflow:hidden;cursor:pointer;text-align:left;transition:border-color .15s,transform .15s}
.tcard:hover{border-color:#6F665A;transform:translateY(-1px)}
.tcard canvas{display:block;width:100%;aspect-ratio:16/9;background:#000}
.tcard b{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:12px;font-weight:600;padding:7px 9px 1px;line-height:1.25;height:calc(2*1.25em);box-sizing:content-box}
.tcard small{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:10.5px;color:var(--ink3);padding:0 9px 9px;line-height:1.35;height:calc(2*1.35em);box-sizing:content-box}
.tcard::after{content:'';position:absolute;top:6px;right:6px;width:18px;height:18px;border-radius:50%;border:1.5px solid rgba(255,255,255,.7);background:rgba(0,0,0,.35)}
.tcard.is-on{border-color:var(--gold)}
.tcard.is-on::after{background:var(--gold) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%23FFF8EC' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round' d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center/12px no-repeat;border-color:var(--gold)}
.single .tcard::after{border-radius:50%}

/* nhạc */
.music-card{border:1px solid var(--line2);background:var(--panel);border-radius:var(--r);overflow:hidden}
.music-card__info{padding:10px 12px;font-size:12.5px;color:var(--ink2);display:flex;justify-content:space-between;gap:8px}
.music-card__info b{color:var(--ink);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.music-card canvas{display:block;width:100%;height:84px;background:var(--bg2);cursor:pointer;
  border-top:1px solid var(--line)}
.music-card.is-empty canvas{display:none}

/* ───── stage ───── */
.stage{display:grid;grid-template-rows:minmax(0,1fr) auto auto;min-width:0;min-height:0;background:radial-gradient(120% 90% at 50% 30%,#FCFAF7,#F0ECE6)}
.viewer{position:relative;min-height:0;min-width:0;display:grid;place-items:center;
  padding:22px 24px 12px;overflow:hidden}
.viewer__frame{position:relative;border-radius:6px;overflow:hidden;background:#000;box-shadow:0 0 0 1px rgba(47,43,36,.16),0 1px 2px rgba(58,50,38,.10),0 12px 28px -8px rgba(58,50,38,.18),0 40px 72px -32px rgba(58,50,38,.26)}
.viewer__frame canvas{display:block;width:100%;height:100%}
.viewer:fullscreen{padding:0;background:#000}
.viewer:fullscreen .viewer__frame{border-radius:0;box-shadow:none}
.empty{position:absolute;inset:0;display:grid;place-content:center;text-align:center;padding:20px;background:radial-gradient(80% 80% at 50% 45%,#FFFDF8,#F4EEE3)}
.empty__orn{font-size:34px;color:var(--gold)}
.empty h1{font:500 clamp(22px,3.2vw,40px)/1.15 var(--f-title);margin:8px 0}
.empty p{color:var(--ink2);margin:0 0 16px}
.empty .btn{justify-self:center}
.loading{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);display:flex;align-items:center;gap:10px;background:rgba(255,253,249,.93);border:1px solid var(--line2);padding:8px 14px;border-radius:30px;font-size:12.5px;backdrop-filter:blur(8px);box-shadow:0 2px 8px rgba(58,50,38,.18),0 8px 20px -8px rgba(58,50,38,.22)}
.loading i{width:14px;height:14px;border-radius:50%;border:2px solid var(--gold);border-right-color:transparent;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.drop-hint{position:absolute;inset:12px;border:2px dashed #F0DCB4;border-radius:14px;display:grid;place-items:center;font:500 26px var(--f-title);color:#F0DCB4;background:rgba(18,16,15,.7);opacity:0;pointer-events:none;transition:opacity .2s}
.app.is-dragging .drop-hint{opacity:1}

.transport{display:flex;align-items:center;gap:12px;padding:6px 24px 10px}
.time{font-variant-numeric:tabular-nums;font-size:12.5px;min-width:40px;text-align:center}
.time--dim{color:var(--ink3)}
.scrub{position:relative;flex:1;height:38px;cursor:pointer;border-radius:6px;overflow:hidden;background:var(--bg2);border:1px solid var(--line)}
.scrub canvas{display:block;width:100%;height:100%}
.scrub__head{position:absolute;top:0;bottom:0;width:2px;margin-left:-1px;background:#2F2B24;box-shadow:0 0 0 1px rgba(255,253,249,.9);pointer-events:none}
.scrub__head::before{content:'';position:absolute;top:-1px;left:-4px;border:5px solid transparent;border-top-color:#2F2B24}

.strip{display:flex;align-items:center;gap:0;overflow-x:auto;padding:10px 24px 16px;min-height:116px;border-top:1px solid var(--line);background:#F1ECE3}
.strip:empty::before{content:'Dải ảnh sẽ hiện ở đây — kéo để đổi thứ tự';color:var(--ink3);font-size:12.5px;margin:auto}
.card{position:relative;flex:none;width:118px;height:82px;border-radius:7px;overflow:hidden;cursor:pointer;background:#000;border:2px solid transparent;transition:border-color .15s,opacity .15s,transform .15s}
.card img{width:100%;height:100%;object-fit:cover;display:block;pointer-events:none}
.card--pair{width:150px}
.card--pair .card__imgs{display:grid;grid-template-columns:1fr 1fr;gap:2px;height:100%}
.card--title{display:grid;place-items:center;background:linear-gradient(135deg,#3a2c24,#1b1512);color:#E8C78F;font:italic 500 17px var(--f-title);text-align:center;padding:6px}
.card__n{position:absolute;left:5px;top:5px;background:rgba(0,0,0,.6);color:#FFF7EA;font-size:10px;padding:0 5px;border-radius:4px;font-weight:700}
.card__cap{position:absolute;left:0;right:0;bottom:0;padding:10px 6px 3px;color:#FFF7EA;font-size:10px;background:linear-gradient(transparent,rgba(0,0,0,.8));white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card__x{position:absolute;right:4px;top:4px;width:20px;height:20px;border-radius:50%;border:0;background:rgba(0,0,0,.6);color:#fff;font-size:13px;line-height:20px;padding:0;cursor:pointer;opacity:0;transition:opacity .15s}
.card:hover .card__x{opacity:1}
.card.is-sel{border-color:var(--gold)}
.card.is-live{box-shadow:0 0 0 2px rgba(47,43,36,.55)}
.card.is-dragging{opacity:.35}
.card.drop-before{transform:translateX(8px)}
.card.drop-before::before{content:'';position:absolute;left:-2px;top:0;bottom:0;width:3px;background:var(--gold)}
.tr-chip{flex:none;display:grid;place-items:center;width:30px;height:30px;margin:0 3px;border-radius:50%;border:1px solid var(--line2);background:var(--panel);color:var(--gold);font-size:12px;cursor:pointer;position:relative}
.tr-chip:hover{border-color:var(--gold)}
.tr-chip[data-tip]:hover::after{content:attr(data-tip);position:absolute;bottom:calc(100% + 6px);left:50%;transform:translateX(-50%);background:#332F28;border:1px solid #443E35;padding:3px 8px;border-radius:5px;white-space:nowrap;font-size:11px;color:#FFFBF2;z-index:5}

/* ───── inspector ───── */
.inspector{display:none;border-left:1px solid var(--line);background:var(--bg2);overflow-y:auto;min-height:0;padding:16px}
.app.has-sel .inspector{display:block}
.inspector h2{font:600 22px/1.15 var(--f-title);margin:4px 0 12px}
/* Đầu cột tinh chỉnh: tiêu đề bên trái, nút đóng bên phải */
.insp-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:4px 0 12px}
.insp-head h2{margin:0;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.insp-close{width:30px;height:30px;flex:none}
.insp-close svg{width:16px;height:16px}
.insp-empty p{color:var(--ink2)}
.keys{list-style:none;padding:0;margin:18px 0;display:grid;gap:8px;color:var(--ink3);font-size:12px}
kbd{display:inline-block;min-width:22px;padding:1px 6px;margin-right:4px;border-radius:5px;border:1px solid var(--line2);border-bottom-width:2px;background:var(--panel);color:var(--ink);font:600 11px var(--f-ui);text-align:center}
.focus{position:relative;border-radius:8px;overflow:hidden;cursor:crosshair;background:#000;line-height:0}
.focus img{width:100%;max-height:260px;object-fit:contain;display:block}
.focus__dot{position:absolute;width:26px;height:26px;margin:-13px 0 0 -13px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 2px rgba(0,0,0,.4),0 0 0 999px rgba(0,0,0,.0);pointer-events:none;transition:left .2s var(--ease),top .2s var(--ease)}
.focus__dot::after{content:'';position:absolute;inset:8px;border-radius:50%;background:var(--gold)}

/* ───── dialog ───── */
.dialog{border:1px solid var(--line2);background:var(--panel);color:var(--ink);border-radius:14px;padding:0;width:min(560px,calc(100vw - 32px));box-shadow:0 0 0 1px rgba(47,43,36,.08),0 1px 2px rgba(58,50,38,.08),0 16px 32px -12px rgba(58,50,38,.18),0 48px 88px -32px rgba(58,50,38,.26)}
.dialog::backdrop{background:rgba(45,39,30,.42);backdrop-filter:blur(4px)}
.dialog__body{padding:18px 20px 18px}
.dialog__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.dialog__head h2{font:600 26px var(--f-title);margin:0}
.dialog__foot{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}
.summary{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);padding:12px 14px;margin:14px 0 0;font-size:12.5px}
.summary dt{color:var(--ink3)}
.summary dd{margin:0;text-align:right;font-variant-numeric:tabular-nums}
.progress{margin:16px 0 4px}
.progress__bar{height:8px;border-radius:8px;background:var(--bg2);overflow:hidden;border:1px solid var(--line)}
.progress__bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#8A6A33,#A07F3C);transition:width .2s linear}
.progress__meta{display:flex;justify-content:space-between;color:var(--ink2);font-size:12.5px;margin-top:8px;font-variant-numeric:tabular-nums}
.result video{width:100%;border-radius:8px;background:#000;margin-top:12px;max-height:320px}
.result p{color:var(--ink2);font-size:12.5px}
.error{color:var(--danger);background:rgba(176,58,43,.07);border:1px solid rgba(176,58,43,.35);padding:10px 12px;border-radius:8px;font-size:12.5px}

/* ───── bổ sung ───── */
.btn--shuffle{margin:12px 0 2px;padding:10px 14px;border-color:#C8B084;background:linear-gradient(#FBF2E2,#F5E9D3);color:var(--gold2);font-weight:700}
.btn--shuffle:hover{border-color:var(--gold)}
.btn--shuffle svg{transition:transform .5s var(--ease)}
.btn--shuffle:active svg{transform:rotate(180deg)}
.pq{background:var(--bg2);border:1px solid var(--line2);border-radius:var(--r-sm);padding:6px 8px;font-size:12px;color:var(--ink2);outline:none}
.pairwrap{position:relative;display:flex;gap:3px;padding:4px;border-radius:10px;background:rgba(126,95,44,.07);border:1px dashed rgba(126,95,44,.38)}
.pairwrap::after{content:'ghép đôi';position:absolute;left:50%;bottom:-9px;transform:translateX(-50%);font-size:9.5px;letter-spacing:.06em;color:var(--gold);background:#F1ECE3;padding:0 6px;border-radius:6px}
.pairwrap .card{width:84px}
.strip .card.is-flash{animation:cardIn .5s var(--ease) both}
@keyframes cardIn{from{opacity:0;transform:translateY(10px) scale(.94)}to{opacity:1;transform:none}}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;display:flex;align-items:center;gap:14px;background:#FFFFFF;border:1px solid var(--line2);box-shadow:0 0 0 1px rgba(47,43,36,.10),0 1px 2px rgba(58,50,38,.10),0 10px 24px -10px rgba(58,50,38,.18),0 24px 56px -28px rgba(58,50,38,.22);padding:10px 12px 10px 16px;border-radius:12px;z-index:100;transition:opacity .25s,transform .25s var(--ease);font-size:13px;pointer-events:none}
.toast.is-on{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.toast button{border:0;background:transparent;color:var(--gold);font-weight:700;cursor:pointer;padding:4px 6px}

/* ───── responsive ───── */
@media (max-width:1280px){
  .app{grid-template-columns:320px minmax(0,1fr)}
  .app.has-sel{grid-template-columns:320px minmax(0,1fr) 320px}
}
@media (max-width:1080px){
  .app,.app.has-sel{grid-template-columns:320px minmax(0,1fr)}
  .inspector{position:fixed;right:12px;top:70px;bottom:130px;width:316px;z-index:20;border:1px solid var(--line2);border-radius:12px;box-shadow:0 0 0 1px rgba(47,43,36,.09),0 1px 2px rgba(58,50,38,.08),0 12px 28px -10px rgba(58,50,38,.16),0 32px 64px -30px rgba(58,50,38,.22);display:none}
  .app.has-sel .inspector{display:block}
}
@media (max-width:760px){
  body{overflow:auto}
  .app,.app.has-sel{grid-template-columns:1fr;grid-template-rows:auto auto auto;height:auto}
  .topbar{flex-wrap:wrap;padding:10px 16px;gap:10px}
  .seg--aspect{order:3;width:100%;display:flex}.seg--aspect button{flex:1;justify-content:center}
  .stage{grid-row:2;min-height:70vh}
  .side{grid-row:3;grid-template-columns:1fr;border-right:0}
  .tabs{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line)}
  .tabs button{flex:1;min-width:64px}
  .viewer{padding:12px 16px}
  .transport{padding:6px 16px 10px}
  .strip{padding:10px 16px 14px}
  .inspector{left:16px;right:16px;width:auto;top:auto;bottom:16px;max-height:60vh}
}
@media (prefers-reduced-motion:reduce){.panel{animation:none}}