/* KTV包厢费用计算器 · 现代产品感霓虹控制台 · 作用域 .t3-ktv（深色仅改变量值） */
.t3-ktv {
  --bg: #f5f7fb;
  --card: #ffffff;
  --ink: #1f2937;
  --sub: #667085;
  --line: #e4e7ec;
  --acc: var(--a);
  --acc-deep: #7e22ce;
  --deep: #6b21a8;
  --neon: #e879f9;
  --soft: rgba(147, 51, 234, .08);
  --bad: #be123c;
  --warn: #b45309;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 12px 28px -14px rgba(16, 24, 40, .12);
  --ring: 0 0 0 3px rgba(147, 51, 234, .25);
  --glow: 0 0 0 3px rgba(147, 51, 234, .18);
  --btn-fg: #fff;
  --hero-bg: linear-gradient(115deg, #3b0764, #7e22ce 55%, #c026d3);
  --hero-ink: #ffffff;
  --hero-sub: #f5e8ff;
  --hero-em: #fde047;
  --hero-glow: rgba(232, 121, 249, .45);
  --cur-bg: #fdf4ff;
  --svg-bg: #faf5ff;
  --svg-soft: #e9d5ff;
  --svg-dot: #c084fc;
  --svg-ring: #f3e8ff;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  padding: 20px 14px 46px;
  line-height: 1.7;
  font-size: 14px;
}
[data-theme='dark'] .t3-ktv {
  --bg: #0b1220;
  --card: #121a2b;
  --ink: #e6edf7;
  --sub: #9fb0c9;
  --line: rgba(148, 163, 184, .18);
  --acc: #c084fc;
  --acc-deep: #9333ea;
  --deep: #d8b4fe;
  --neon: #f0abfc;
  --soft: rgba(192, 132, 252, .14);
  --bad: #fb7185;
  --warn: #fbbf24;
  --shadow: 0 1px 2px rgba(0, 0, 0, .35), 0 12px 28px -14px rgba(0, 0, 0, .55);
  --ring: 0 0 0 3px rgba(192, 132, 252, .3);
  --glow: 0 0 0 3px rgba(192, 132, 252, .22);
  --btn-fg: #0b1220;
  --hero-bg: linear-gradient(115deg, #131c2e, #221033 55%, #2e1065);
  --hero-ink: #e6edf7;
  --hero-sub: #d3c2e8;
  --hero-em: #f0abfc;
  --hero-glow: rgba(192, 132, 252, .28);
  --cur-bg: rgba(192, 132, 252, .14);
  --svg-bg: #1a2338;
  --svg-soft: #2c1f45;
  --svg-dot: #9333ea;
  --svg-ring: #1f2b45;
}
.t3-ktv * { box-sizing: border-box; }
.t3-ktv .kt-wrap { max-width: 1180px; margin: 0 auto; }

/* ---------- hero（保留霓虹光斑氛围，色值全部变量化） ---------- */
.t3-ktv .kt-hero {
  display: flex; gap: 24px; align-items: center; justify-content: space-between;
  background: var(--hero-bg);
  border-radius: 16px; padding: 26px 28px; color: var(--hero-ink);
  box-shadow: var(--shadow);
  position: relative; overflow: hidden;
}
.t3-ktv .kt-hero::after {
  content: ""; position: absolute; right: -30px; top: -30px; width: 180px; height: 180px; border-radius: 50%;
  background: radial-gradient(circle, var(--hero-glow), transparent 70%); pointer-events: none;
}
.t3-ktv .kt-badge {
  display: inline-block; background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .3);
  border-radius: 999px; padding: 3px 14px; font-size: 13px; letter-spacing: 1px;
}
.t3-ktv .kt-hero h1 { margin: 10px 0 6px; font-size: clamp(22px, 3.2vw, 30px); line-height: 1.35; font-weight: 800; }
.t3-ktv .kt-hero h1 em {
  font-style: normal; font-size: clamp(14px, 1.9vw, 18px); color: var(--hero-em); font-weight: 600;
}
.t3-ktv .kt-sub { margin: 4px 0 0; font-size: 14px; color: var(--hero-sub); max-width: 640px; }
.t3-ktv .kt-sub b { color: var(--hero-em); }
.t3-ktv .kt-art { flex: 0 0 auto; z-index: 1; background: var(--card); border-radius: 14px; padding: 10px; box-shadow: 0 6px 16px rgba(0, 0, 0, .18); }

/* ---------- layout ---------- */
.t3-ktv .kt-grid { display: grid; grid-template-columns: minmax(320px, 420px) 1fr; gap: 24px; margin-top: 24px; align-items: start; }
.t3-ktv .kt-console { display: flex; flex-direction: column; gap: 24px; min-width: 0; }
.t3-ktv .kt-side { display: flex; flex-direction: column; gap: 24px; min-width: 0; }
@media (max-width: 900px) {
  .t3-ktv .kt-hero { flex-direction: column; text-align: center; }
  .t3-ktv .kt-sub { margin-left: auto; margin-right: auto; }
  .t3-ktv .kt-art { max-width: 260px; }
  .t3-ktv .kt-art svg { width: 100%; height: auto; }
  .t3-ktv .kt-grid { grid-template-columns: 1fr; }
}

/* ---------- cards ---------- */
.t3-ktv .kt-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 22px;
  box-shadow: var(--shadow); transition: box-shadow .2s;
}
.t3-ktv .kt-card:hover { box-shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 14px 30px -14px rgba(16, 24, 40, .16); }
.t3-ktv .kt-card h2 {
  font-size: 17px; margin: 0 0 14px; display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; flex-wrap: wrap;
}
.t3-ktv .kt-card h2 i {
  font-style: normal; width: 24px; height: 24px; border-radius: 8px; background: var(--acc); color: var(--btn-fg);
  font-size: 12px; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto;
}
.t3-ktv .kt-card h2 small { font-weight: 400; font-size: 12px; color: var(--sub); }
.t3-ktv .kt-h3 { margin: 16px 0 8px; font-size: 14px; color: var(--sub); font-weight: 700; }

/* ---------- fields ---------- */
.t3-ktv .kt-row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 20px; }
@media (max-width: 760px) { .t3-ktv .kt-row2 { grid-template-columns: 1fr; } }
.t3-ktv .kt-field { min-width: 0; }
.t3-ktv .kt-field > label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 6px; color: var(--ink); }
.t3-ktv .kt-field > label b { color: var(--acc); }
.t3-ktv .kt-hint { margin: 6px 0 0; font-size: 12px; color: var(--sub); line-height: 1.5; }
.t3-ktv .kt-field select {
  width: 100%; height: 44px; border: 1px solid var(--line); border-radius: 10px; padding: 0 12px; font-size: 14.5px;
  background: var(--card); color: var(--ink); font-family: inherit; transition: border-color .15s, box-shadow .15s;
}
.t3-ktv .kt-ctl { display: flex; align-items: stretch; }
.t3-ktv .kt-ctl input {
  flex: 1; min-width: 0; height: 44px; border: 1px solid var(--line); border-radius: 10px 0 0 10px; padding: 0 12px;
  font-size: 15px; font-family: inherit; background: var(--card); color: var(--ink); transition: border-color .15s, box-shadow .15s;
}
.t3-ktv .kt-ctl input::placeholder { color: var(--sub); opacity: .7; }
.t3-ktv .kt-ctl i {
  font-style: normal; display: inline-flex; align-items: center; padding: 0 12px; font-size: 12.5px;
  background: var(--soft); color: var(--sub); border: 1px solid var(--line); border-left: 0; border-radius: 0 10px 10px 0;
}
.t3-ktv .kt-field select:focus, .t3-ktv .kt-ctl input:focus { outline: none; border-color: var(--acc); box-shadow: var(--ring); position: relative; z-index: 1; }
.t3-ktv .err { margin: 4px 0 0; font-size: 12px; color: var(--bad); min-height: 0; }
.t3-ktv .kt-field.bad input { border-color: var(--bad); }
.t3-ktv .kt-note { margin: 12px 0 0; font-size: 12.5px; color: var(--sub); background: var(--soft); border-radius: 10px; padding: 8px 12px; }

/* drink checkbox row */
.t3-ktv .kt-drinkrow { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.t3-ktv .kt-check { display: flex; align-items: center; gap: 9px; cursor: pointer; font-size: 14px; font-weight: 700; color: var(--ink); }
.t3-ktv .kt-check input { position: absolute; opacity: 0; pointer-events: none; }
.t3-ktv .kt-box { width: 19px; height: 19px; border-radius: 6px; border: 2px solid var(--line); background: var(--card); position: relative; flex: 0 0 auto; transition: .15s; }
.t3-ktv .kt-check input:checked + .kt-box { background: var(--acc); border-color: var(--acc); }
.t3-ktv .kt-check input:checked + .kt-box::after { content: ""; position: absolute; left: 4.5px; top: 1px; width: 5px; height: 10px; border: 2.5px solid var(--btn-fg); border-top: 0; border-left: 0; transform: rotate(42deg); }
.t3-ktv .kt-ctl-price { width: 150px; flex: 0 0 auto; }
@media (max-width: 760px) { .t3-ktv .kt-ctl-price { width: 100%; } }

/* ---------- buttons ---------- */
.t3-ktv .kt-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.t3-ktv .kt-btn {
  border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 10px;
  height: 44px; padding: 0 20px; font-size: 14.5px; font-family: inherit; cursor: pointer; transition: .15s;
}
.t3-ktv .kt-btn:hover { border-color: var(--acc); color: var(--acc); }
.t3-ktv .kt-btn-go {
  flex: 1; background: linear-gradient(135deg, var(--acc), var(--acc-deep)); border: none; color: var(--btn-fg);
  font-weight: 700; box-shadow: 0 6px 16px -6px var(--soft);
}
.t3-ktv .kt-btn-go:hover { color: var(--btn-fg); filter: brightness(1.06); transform: translateY(-1px); }
.t3-ktv .kt-btn-ghost { color: var(--sub); }
.t3-ktv .kt-msg { margin: 12px 0 0; font-size: 13px; color: var(--sub); background: var(--soft); border-radius: 10px; padding: 8px 12px; }
.t3-ktv .kt-msg.bad { color: var(--bad); background: rgba(190, 18, 60, .1); }
.t3-ktv .kt-msg.warn { color: var(--warn); background: rgba(180, 83, 9, .1); }

/* ---------- KPI（主结果区） ---------- */
.t3-ktv .kt-kpis { display: grid; grid-template-columns: 1fr 1.2fr 1fr; gap: 16px; }
@media (max-width: 560px) { .t3-ktv .kt-kpis { grid-template-columns: 1fr; } }
.t3-ktv .kt-kpi {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px; text-align: center; padding: 14px 10px;
  display: flex; flex-direction: column; gap: 2px;
}
.t3-ktv .kt-kpi span { font-size: 12px; color: var(--sub); }
.t3-ktv .kt-kpi b {
  font-size: clamp(22px, 3vw, 28px); font-weight: 800; line-height: 1.25; font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, var(--acc), var(--a2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.t3-ktv .kt-kpi em { font-style: normal; font-size: 11.5px; color: var(--sub); }
.t3-ktv .kt-kpi.big {
  background: linear-gradient(135deg, var(--acc), var(--acc-deep)); border-color: transparent;
  box-shadow: 0 8px 22px -8px var(--soft);
}
.t3-ktv .kt-kpi.big span, .t3-ktv .kt-kpi.big em { color: var(--hero-sub); }
.t3-ktv .kt-kpi.big b {
  background: none; -webkit-background-clip: border-box; background-clip: border-box; color: var(--btn-fg);
  font-size: clamp(28px, 4.5vw, 40px);
}
.t3-ktv .kt-minnote { margin: 12px 0 0; font-size: 13px; color: var(--sub); }
.t3-ktv .kt-minnote.hit { color: var(--warn); font-weight: 700; }

/* ring */
.t3-ktv .kt-ringwrap { display: flex; align-items: center; gap: 16px; margin-top: 16px; }
.t3-ktv .kt-ringwrap svg { width: 110px; height: 110px; flex: 0 0 auto; }
.t3-ktv .kt-ringwrap p { margin: 0; font-size: 13px; color: var(--sub); }
.t3-ktv .kt-ringwrap b { color: var(--deep); }
@media (max-width: 560px) { .t3-ktv .kt-ringwrap { flex-direction: column; text-align: center; } }

/* 空态引导 */
.t3-ktv .kt-empty {
  display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center;
  border: 1px dashed var(--line); border-radius: 16px; padding: 34px 20px;
}
.t3-ktv .kt-empty-ico { font-size: 32px; line-height: 1; }
.t3-ktv .kt-empty b { color: var(--ink); font-size: 15px; }
.t3-ktv .kt-empty p { margin: 0; font-size: 13px; color: var(--sub); max-width: 460px; }
.t3-ktv #ktOut[hidden] ~ .kt-empty { display: flex; }
.t3-ktv #ktOut:not([hidden]) ~ .kt-empty { display: none; }

/* ---------- matrix（霓虹点亮保留，色值变量化） ---------- */
.t3-ktv .kt-matrix { display: grid; grid-template-columns: auto repeat(3, 1fr); gap: 8px; font-size: 12.5px; }
@media (max-width: 760px) { .t3-ktv .kt-matrix { gap: 5px; font-size: 11.5px; } }
.t3-ktv .kt-mh { color: var(--sub); font-weight: 700; display: flex; align-items: center; justify-content: center; text-align: center; padding: 4px; }
.t3-ktv .kt-mrow { color: var(--sub); font-weight: 700; display: flex; align-items: center; }
.t3-ktv .kt-cell {
  border: 1px solid var(--line); border-radius: 10px; padding: 8px 6px; text-align: center;
  background: var(--card); transition: .15s;
}
.t3-ktv .kt-cell b { display: block; font-size: 14px; color: var(--deep); font-variant-numeric: tabular-nums; }
.t3-ktv .kt-cell span { font-size: 11px; color: var(--sub); }
.t3-ktv .kt-cell.cur { border-color: var(--acc); background: var(--cur-bg); box-shadow: var(--glow); }
.t3-ktv .kt-cell.top { border-color: var(--neon); }
.t3-ktv .kt-cell.top::after { content: " 👑"; }

/* ---------- table ---------- */
.t3-ktv .kt-tbwrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.t3-ktv .kt-tb { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 440px; }
.t3-ktv .kt-tb th, .t3-ktv .kt-tb td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; }
.t3-ktv .kt-tb thead th { background: var(--soft); color: var(--ink); font-size: 12.5px; font-weight: 700; }
.t3-ktv .kt-tb td.num, .t3-ktv .kt-tb th.num { text-align: right; font-variant-numeric: tabular-nums; }
.t3-ktv .kt-tb tr.cur td { background: var(--cur-bg); font-weight: 700; }
.t3-ktv .kt-tb tr.cur td:first-child { border-left: 3px solid var(--acc); }
.t3-ktv .kt-reco { margin: 12px 0 0; font-size: 13.5px; color: var(--deep); font-weight: 700; }
.t3-ktv .kt-steps { margin: 0; padding-left: 20px; font-size: 13px; color: var(--sub); }
.t3-ktv .kt-steps li { margin-bottom: 5px; }
.t3-ktv .kt-steps b { color: var(--ink); }
.t3-ktv .kt-ops { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.t3-ktv .kt-ops button {
  border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 10px;
  padding: 8px 16px; font-size: 13px; cursor: pointer; font-family: inherit; transition: .15s;
}
.t3-ktv .kt-ops button:hover { border-color: var(--acc); color: var(--acc); }

/* ---------- history ---------- */
.t3-ktv .kt-hist-head { display: flex; justify-content: space-between; align-items: center; }
.t3-ktv .kt-hist-head h2 { margin: 0; }
.t3-ktv .kt-hist-head button {
  border: 1px solid var(--line); background: none; color: var(--sub); border-radius: 999px;
  padding: 4px 14px; font-size: 12.5px; cursor: pointer; font-family: inherit;
}
.t3-ktv .kt-hist-head button:hover { border-color: var(--bad); color: var(--bad); }
.t3-ktv .kt-hist { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.t3-ktv .kt-hist-empty { margin: 0; font-size: 12.5px; color: var(--sub); }
.t3-ktv .kt-hitem {
  display: flex; justify-content: space-between; gap: 10px; align-items: center;
  border: 1px solid var(--line); border-radius: 10px; padding: 9px 14px; cursor: pointer;
  font-size: 13.5px; background: var(--card); transition: .15s;
}
.t3-ktv .kt-hitem:hover { border-color: var(--acc); box-shadow: var(--ring); }
.t3-ktv .kt-hitem small { color: var(--sub); font-size: 11.5px; }

@media print {
  .t3-ktv .kt-hero, .t3-ktv .kt-console, .t3-ktv .kt-ops, .t3-ktv .kt-empty, .t3-ktv .kt-card:last-child { display: none !important; }
  .t3-ktv { background: #fff; padding: 0; }
  .t3-ktv .kt-grid { display: block; }
}