/* App shell, auth, lobby, dashboard — POffice design language: pale-green canvas, white cards
   with POffice shadows, green brand gradient, gold as a small accent. See docs/DESIGN.md. */
.brand{display:inline-flex;align-items:center;gap:.55rem;font-weight:800;font-size:1.2rem;color:var(--dark);letter-spacing:-.02em;font-family:var(--font-h)}
.brand:hover{color:var(--dark);text-decoration:none}
.brand img{flex:none;width:30px;height:30px;border-radius:9px;box-shadow:0 6px 16px -6px rgba(212,175,55,.55)}

/* POffice topbar: frosted white strip */
.appnav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.78);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.appnav .container{display:flex;align-items:center;justify-content:space-between;min-height:72px;padding:.6rem 0}
.appnav .who{display:flex;align-items:center;gap:.6rem;color:var(--ink-2);font-weight:500;font-size:.94rem}
.appnav .btn{min-height:40px;padding:.5rem .95rem}
/* Phone: brand + admin + name + avatar + logout was ~465px, widening the page past
   a 375px screen (logout pushed off-screen). Drop the name (the avatar shows it)
   and the admin label. */
@media(max-width:520px){
  .appnav .who{gap:.4rem}
  .appnav #whoName,.appnav .nav-lbl{display:none}
  .appnav .brand{font-size:0;gap:0;min-width:0}   /* logo only: the name collided with the language select */
}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--grad-gold);color:#2A1E00;border:2px solid #fff;box-shadow:0 0 0 1px var(--line),0 6px 14px -6px rgba(212,175,55,.6);display:grid;place-items:center;font-weight:600;font-size:.88rem;flex:none}

/* ---------- auth ---------- */
.auth-wrap{min-height:100vh;min-height:100dvh;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);background:var(--bg)}
/* minmax(0,…) + lighter side padding: the card is 90vw wide, and 90vw + 2×2.5rem
   exceeds a 375px phone, which widened the whole page to ~417px (form cut off). */
@media(max-width:820px){.auth-wrap{grid-template-columns:minmax(0,1fr)}}
.auth-side{margin:1.25rem 0 1.25rem 1.25rem;border-radius:24px;background:var(--deep-3) var(--grad-deep);color:#fff;box-shadow:var(--e3);padding:3rem clamp(2rem,4vw,3.5rem);display:flex;flex-direction:column;justify-content:space-between;gap:2rem}
@media(max-width:820px){.auth-side{display:none}}
.auth-side .brand{color:#fff}
.auth-side .brand:hover{color:#fff}
.auth-side h2{color:#fff;font-size:clamp(1.8rem,3vw,2.6rem);line-height:1.08;letter-spacing:-.04em;max-width:16ch;margin:0 0 1.6rem}
.auth-side ul{list-style:none;padding:0;margin:0;display:grid;gap:1rem}
.auth-side li{display:flex;gap:.8rem;align-items:flex-start;color:var(--on-dark);font-size:1rem}
.auth-side li .i{color:#F1D270;margin-top:.15rem}
.auth-side .foot{color:var(--on-dark-2);font-size:.86rem}
.tile-sm{width:36px;height:36px;border-radius:10px}
.auth-side .tile-3d{background:var(--grad-gold);box-shadow:0 8px 22px -6px rgba(212,175,55,.55)}
.side-foot{display:grid;gap:1.6rem}
/* decorative mini meeting: four pastel tiles, the same language as the room */
.stack-art{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;max-width:330px}
.stack-art .sl{aspect-ratio:1.5;border-radius:14px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.12)}
.stack-art .sl2{background:rgba(255,255,255,.16)}.stack-art .sl3{background:rgba(255,255,255,.07)}.stack-art .sl1{background:rgba(241,210,112,.20);border-color:rgba(241,210,112,.35);display:grid;place-items:center;color:#F1D270}
.stack-art .sl1 i{display:none}
.auth-main{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;padding:2.5rem;background:var(--bg)}
.auth-main>div:first-child{align-self:stretch}
@media(max-width:520px){.auth-main{padding:1.25rem .75rem;justify-content:flex-start}}
.auth-card{position:relative;overflow:hidden;width:min(430px,100%);padding:2rem;background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-lift)}
/* POffice accent: a thin metallic-gold rule along the top edge */
.auth-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-gold)}
@media(max-width:520px){.auth-card{padding:1.4rem 1.2rem}}
.auth-card h1{font-size:1.6rem;margin:0 0 .3rem}
.auth-card .sub{color:var(--muted);margin:0 0 1.4rem;font-size:.95rem}
/* Text links were 17px tall — too small to hit with a thumb. Padding grows the tap
   area to ~40px; the equal negative margin keeps the visual layout unchanged. */
.auth-card .tlink{color:var(--accent-2);font-weight:600;display:inline-block;padding:.7rem .5rem;margin:-.7rem -.5rem}
.auth-card .brand{margin-bottom:1.6rem}
.auth-card .brand-m{display:none}
@media(max-width:820px){.auth-card .brand-m{display:inline-flex}}
/* segmented pill switch (reference .toggle) */
.tabs{display:flex;background:var(--bg-2);border-radius:14px;padding:4px;margin-bottom:1.4rem;gap:2px}
.tabs a{flex:1;text-align:center;padding:.6rem;border-radius:11px;font-weight:600;font-size:.93rem;color:var(--muted)}
.tabs a:hover{color:var(--ink);text-decoration:none}
.tabs a.active{background:var(--card);color:var(--accent-2);box-shadow:var(--e1)}
.back-link{display:inline-flex;align-items:center;gap:.35rem}

/* ---------- dashboard ---------- */
.dash{padding:2rem 0 4rem}
.dash-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:1.5rem;flex-wrap:wrap;padding:1.25rem 0 2rem;border-bottom:1px solid var(--line);margin-bottom:1.75rem}
.dash-hero h1{font-size:clamp(2rem,4.4vw,3.2rem);line-height:1.05;letter-spacing:-.045em;font-weight:700;margin:0 0 .5rem;overflow-wrap:anywhere}
.dash-hero-copy p:last-child{color:var(--muted);margin:0;font-size:1.02rem}
.dash-hero .eyebrow{margin-bottom:1rem}
.banner-acts{display:flex;gap:.7rem;flex-wrap:wrap}
@media(max-width:640px){.dash-hero{padding:.5rem 0 1.5rem}.banner-acts{width:100%}.banner-acts .btn{flex:1 1 auto}}
#soonBanner{margin:0 0 1.5rem;padding:.9rem 1.2rem;border-radius:18px}
#soonBanner .banner-body{color:var(--ink);font-weight:500}
/* auto-fit so a 5th tile wraps gracefully instead of hardcoding a column count */
.actionbar{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:2.2rem}
@media(max-width:520px){.actionbar{grid-template-columns:1fr;gap:10px}}
.action{display:flex;flex-direction:column;gap:1rem;align-items:flex-start;padding:1.3rem;border-radius:22px;cursor:pointer;color:var(--ink);font-weight:600;
  font-family:inherit;text-align:left;width:100%;font-size:1.02rem;min-height:150px}
.action.new{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 22%,#fff)}
.action.new .ai{background:var(--accent);background-image:var(--grad-brand);color:#fff;box-shadow:var(--glow)}
.action .ai{flex:0 0 auto;width:46px;height:46px}
.action:not(.new) .ai{background:var(--bg-2);color:var(--ink-2)}
.action small{display:block;font-weight:400;color:var(--muted);font-size:.86rem;line-height:1.4;margin-top:.25rem}
@media(max-width:520px){.action{flex-direction:row;align-items:center;min-height:0;padding:1rem}}

/* segmented pill tabs (reference .toggle) */
.tab-row{display:inline-flex;gap:2px;background:var(--bg-2);border-radius:14px;padding:4px;margin-bottom:1.2rem;max-width:100%;overflow-x:auto}
.tab-row button{background:none;border:none;padding:.6rem 1.1rem;border-radius:11px;font-weight:600;color:var(--muted);cursor:pointer;font-family:inherit;font-size:.92rem;white-space:nowrap}
@media(max-width:520px){.tab-row{display:flex}.tab-row button{flex:1;padding:.6rem .6rem;font-size:.86rem}.mrow .acts{width:100%}.mrow .acts .btn-primary{flex:1}}
.tab-row button:hover{color:var(--ink)}
.tab-row button.active{background:var(--card);color:var(--accent-2);box-shadow:var(--e1)}

.mlist{display:grid;gap:.7rem}
.mrow{display:flex;align-items:center;gap:1rem;padding:1rem 1.25rem;flex-wrap:wrap;border-radius:18px}
.mrow .mi{width:46px;height:46px;border-radius:12px;background:var(--bg-2);color:var(--ink-2);display:grid;place-items:center;flex:0 0 46px;font-size:1.15rem}
.mrow .meta{flex:1;min-width:180px}
.mrow .meta b{font-size:1rem;color:var(--ink);font-weight:600}
.mrow .meta .sub{color:var(--muted);font-size:.86rem;display:flex;gap:.2rem .9rem;flex-wrap:wrap;margin-top:.15rem}
.mrow .code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:600;color:var(--ink-2)}
.mrow .acts{display:flex;gap:.4rem;align-items:center;flex-wrap:wrap}
.btn-icon{padding:0;width:40px;height:40px;min-height:40px;font-size:1rem}
.btn-icon.btn-lg{width:46px;height:46px}
.btn-icon.danger:hover{color:var(--danger);border-color:#F3C2C2;background:var(--danger-soft)}
.empty{text-align:center;color:var(--muted);padding:2.5rem 1rem;display:grid;justify-items:center;gap:.9rem}
.empty:not(.card){border:1px solid var(--line);border-radius:var(--radius);background:var(--card)}
.empty .empty-ic{width:60px;height:60px;border-radius:50%;font-size:1.6rem;background:var(--bg-2);color:var(--ink-2)}
.empty p{margin:0;color:var(--ink-2)}
.pw-card{margin-top:2rem;max-width:560px;padding:1.6rem}

/* ---------- modal ---------- */
.modal-back{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(var(--shadow-rgb),.45);z-index:200;display:grid;place-items:center;padding:1rem}
.modal{background:var(--card);border:1px solid var(--line);border-radius:22px;width:min(520px,94vw);max-height:90vh;overflow:auto;box-shadow:var(--shadow-lg);animation:rise .18s ease}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:1.3rem 1.5rem .5rem}
.modal-head h3{margin:0;font-size:1.25rem;letter-spacing:-.02em;font-weight:800;color:var(--dark)}.modal-body{padding:1rem 1.5rem 1.5rem}
.x{background:var(--bg-2);border:none;font-size:1.5rem;cursor:pointer;color:var(--muted);line-height:1;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;padding:0}
.x:hover{background:var(--danger-soft);color:var(--danger)}
.switch{display:flex;justify-content:space-between;align-items:center;padding:.75rem 0;border-bottom:1px solid var(--line);gap:1rem}
.switch:last-child{border:none}
.switch span{color:var(--ink-2)}
.toggle{position:relative;width:46px;height:28px;flex:0 0 46px}
.toggle input{opacity:0;width:0;height:0;position:absolute}
.toggle span{position:absolute;top:0;left:0;right:0;bottom:0;background:var(--border-input);border-radius:999px;transition:.2s;cursor:pointer}
.toggle span::before{content:"";position:absolute;width:22px;height:22px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 2px rgba(32,33,36,.25)}
.toggle input:checked+span{background:var(--accent)}
.toggle input:checked+span::before{transform:translateX(18px)}
.toggle input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- lobby ---------- */
.lobby{min-height:100vh;min-height:100dvh;background:var(--bg);display:flex;align-items:center;justify-content:center;padding:1.5rem}
.lobby-card{width:min(1000px,96vw);display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:2.25rem;background:var(--card);
  border:1px solid var(--line);border-radius:24px;padding:1.5rem;box-shadow:var(--shadow-lift)}
@media(max-width:800px){.lobby-card{grid-template-columns:minmax(0,1fr);gap:1.4rem;padding:1rem;border-radius:24px}}
/* camera preview: the same pastel tile language as the room */
.preview{position:relative;background:color-mix(in srgb,var(--av,var(--accent)) 14%,#fff);border-radius:22px;overflow:hidden;aspect-ratio:16/10;display:grid;place-items:center}
.preview video{width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}
/* align-content keeps avatar + caption together (a full-height grid would stretch
   the two rows apart), padding-bottom reserves the strip under .prev-ctrls. */
.preview>.off{position:absolute;top:0;left:0;right:0;bottom:0;display:grid;place-items:center;align-content:center;color:var(--ink-2);text-align:center;gap:.7rem;padding:0 1rem 70px;font-size:.92rem}
.preview>.off .av{width:96px;height:96px;border-radius:50%;background:rgba(255,255,255,.7);color:var(--av,var(--accent));display:grid;place-items:center;font-size:2rem;font-weight:600}
.prev-ctrls{position:absolute;bottom:14px;left:0;right:0;display:flex;justify-content:center;gap:.6rem}
.cbtn{flex:none;width:48px;height:48px;min-height:48px;border-radius:50%;border:1px solid #fff;background:rgba(255,255,255,.92);color:var(--ink-2);cursor:pointer;font-size:1.2rem;display:grid;place-items:center;transition:background .15s;padding:0;box-shadow:0 6px 20px rgba(var(--shadow-rgb),.14)}
.cbtn:hover{background:#fff}
.cbtn.off{background:var(--danger-soft);border-color:var(--danger-soft);color:#A61E1E}
.cbtn:disabled{opacity:.5;cursor:not-allowed}
.cbtn .i-off{display:none}
.cbtn.off .i-on{display:none}.cbtn.off .i-off{display:inline-block}
@media(max-width:520px){.preview{aspect-ratio:4/3}.preview>.off .av{width:68px;height:68px;font-size:1.5rem}}
.dev-row{margin-top:.9rem;display:flex;gap:.6rem;flex-wrap:wrap}
.dev-row .input{flex:1;min-width:160px}
.meter{height:4px;border-radius:4px;background:var(--bg-2);margin-top:.8rem;overflow:hidden}
.meter>div{height:100%;width:0;background:var(--accent);background-image:var(--grad-brand);transition:width .08s}
.lobby-form{display:flex;flex-direction:column;justify-content:center;min-width:0}
.lobby-form .brand{margin-bottom:1.4rem}
.lobby-form h2{font-size:1.75rem;letter-spacing:-.035em;margin-bottom:.3rem}
.lobby-form .muted{color:var(--muted);margin:0 0 1.1rem;font-size:.93rem}
.lobby-form .muted:empty{display:none}
.lobby-form .hint{color:var(--muted);font-size:.86rem;margin:.9rem 0 0;line-height:1.5}
.wait-panel{text-align:center;padding:1rem 0}
.wait-panel h2{font-size:1.3rem}
.wait-panel .spinner{width:34px;height:34px;margin:1.2rem auto;border-width:3px}
.wait-panel .muted{margin-bottom:1.2rem}
.meta-muted{color:var(--muted);font-size:.9rem}

/* ---------- thống kê điểm danh (modal trên dashboard) ---------- */
.att-sum{display:flex;gap:.6rem;margin-bottom:1rem;flex-wrap:wrap}
.att-kpi{flex:1;min-width:110px;
  border:1px solid var(--line);border-radius:var(--radius-sm);padding:.7rem .8rem;background:var(--card);box-shadow:var(--shadow-sm),var(--shadow-inset-hi)}
.att-kpi b{display:block;font-size:1.35rem;color:var(--ink);line-height:1.15}
.att-kpi span{font-size:.78rem;color:var(--muted)}
/* Bảng có thể dài hơn màn hình -> cuộn trong khung, không kéo dài cả modal. */
.att-wrap{max-height:46vh;overflow:auto;border:1px solid var(--line);border-radius:var(--radius-sm)}
table.att{width:100%;border-collapse:collapse;font-size:.86rem}
table.att th{position:sticky;top:0;background:var(--card);color:var(--muted);
  text-align:left;font-weight:600;font-size:.76rem;padding:.55rem .7rem;
  border-bottom:1px solid var(--line)}
table.att td{padding:.55rem .7rem;border-bottom:1px solid var(--line);vertical-align:middle}
table.att tr:last-child td{border-bottom:0}
table.att .att-time{font-weight:600;color:var(--ink);white-space:nowrap}
.att-tag{display:inline-block;margin-left:.4rem;font-size:.68rem;padding:.1rem .45rem;
  border-radius:999px;background:var(--bg-2);color:var(--muted)}
.att-tag.in{background:var(--success-soft);color:var(--success)}