/* ============================================================
   Shared design kit for the AI automation portfolio demos.
   Dark, dense, product-looking. One file, no dependencies.
   ============================================================ */
:root{
  --bg:#0e1113; --panel:#161a1d; --panel2:#1d2226; --line:#2a3136; --line2:#353d43;
  --ink:#e8eef1; --dim:#8b979e; --dim2:#67747b;
  --gold:#d9a441; --green:#1f9d63; --greenI:#79dfae; --blue:#4b8ff7; --blueI:#8fc2ff;
  --red:#e05c4b; --redI:#ff9f92; --violet:#9b7bf0;
  --wa:#005c4b; --waIn:#202c33;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-size:14px;
  font-family:"Segoe UI",Inter,system-ui,-apple-system,Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--blueI)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#2c3439;border-radius:8px}
::-webkit-scrollbar-track{background:transparent}

/* ---------- header ---------- */
.hdr{display:flex;align-items:center;gap:14px;padding:12px 18px;flex-wrap:wrap;
  background:linear-gradient(90deg,#12171a,#1b2226);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:20}
.mark{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  font-weight:800;font-size:15px;color:#12161a;background:linear-gradient(135deg,var(--gold),#8a6417)}
.mark.b{background:linear-gradient(135deg,#6ea8ff,#2d5fb8);color:#0a1220}
.mark.g{background:linear-gradient(135deg,#4fd39a,#127a4d);color:#04150d}
.mark.v{background:linear-gradient(135deg,#b79bff,#5b3fc0);color:#100a24}
.mark.r{background:linear-gradient(135deg,#ff9b8c,#b8392a);color:#1c0906}
.hdr .ttl b{display:block;font-size:15.5px;letter-spacing:.2px}
.hdr .ttl span{display:block;color:var(--dim);font-size:11.5px;margin-top:1px}
.spacer{margin-left:auto}
.back{color:var(--dim);text-decoration:none;font-size:12px;border:1px solid var(--line);
  padding:6px 11px;border-radius:8px}
.back:hover{color:var(--gold);border-color:var(--gold)}

/* ---------- buttons + inputs ---------- */
.btn{background:var(--panel2);border:1px solid var(--line2);color:var(--ink);
  padding:8px 14px;border-radius:9px;cursor:pointer;font-size:12.5px;font-family:inherit}
.btn:hover{border-color:var(--gold);color:var(--gold)}
.btn.primary{background:var(--green);border-color:var(--green);color:#fff;font-weight:600}
.btn.primary:hover{background:#25b473;color:#fff;border-color:#25b473}
.btn.blue{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:600}
.btn.blue:hover{background:#6ba0ff;color:#fff}
.btn:disabled{opacity:.5;cursor:default}
.btn.sm{padding:5px 10px;font-size:11.5px}
select,input[type=text],textarea{background:#11161a;border:1px solid var(--line2);color:var(--ink);
  padding:9px 11px;border-radius:9px;font-family:inherit;font-size:13px;outline:0;width:100%}
select:focus,input:focus,textarea:focus{border-color:var(--blue)}
label.fld{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.6px;
  color:var(--dim);margin:0 0 5px 2px}

/* ---------- layout ---------- */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;padding:12px 18px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:11px 13px}
.stat i{font-style:normal;color:var(--dim);font-size:10.5px;text-transform:uppercase;letter-spacing:.6px}
.stat b{display:block;font-size:20px;margin-top:3px;font-variant-numeric:tabular-nums}
.stat.g b{color:var(--greenI)} .stat.y b{color:var(--gold)}
.stat.r b{color:var(--redI)} .stat.b b{color:var(--blueI)}
.wrap{padding:0 18px 22px;display:grid;gap:12px;align-items:start}
.cols-3{grid-template-columns:340px 1fr 1fr}
.cols-2{grid-template-columns:380px 1fr}
.cols-2w{grid-template-columns:1fr 420px}
@media(max-width:1150px){.wrap{grid-template-columns:1fr!important}.stats{grid-template-columns:repeat(2,1fr)}}

.card{background:var(--panel);border:1px solid var(--line);border-radius:13px;overflow:hidden;margin-bottom:12px}
.card:last-child{margin-bottom:0}
.card > h3{margin:0;padding:11px 14px;font-size:12px;letter-spacing:.8px;text-transform:uppercase;
  color:var(--dim);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px}
.card > h3 em{font-style:normal;margin-left:auto;font-size:11px;text-transform:none;letter-spacing:0}
.pad{padding:14px}
.pad-sm{padding:10px 14px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.note{padding:10px 14px;color:var(--dim);font-size:11.5px;border-top:1px solid var(--line);line-height:1.5}
.muted{color:var(--dim)}
.tiny{font-size:11px}

/* ---------- engine log ---------- */
.log{height:280px;overflow-y:auto;padding:10px 12px;font-size:11.8px;
  font-family:Consolas,"SF Mono",ui-monospace,monospace}
.lrow{display:flex;gap:8px;padding:4px 0;border-bottom:1px dashed #232a2f;animation:fade .25s ease}
.lrow > span:first-child{color:var(--dim2);min-width:44px}
.lrow > span:last-child{color:#c8d4da;min-width:0;word-break:break-word}
.tag{padding:1px 6px;border-radius:5px;font-size:10.5px;font-weight:700;letter-spacing:.3px;
  height:16px;white-space:nowrap}
.t-step{background:#1b3a63;color:var(--blueI)}
.t-data{background:#173a2c;color:var(--greenI)}
.t-calc{background:#3d3315;color:#f0cf7c}
.t-act{background:#4a1f1c;color:var(--redI)}
.t-sys{background:#2b2f33;color:#b9c6cc}
.t-ai{background:#2e2350;color:#c3aeff}

/* ---------- tables ---------- */
table{width:100%;border-collapse:collapse;font-size:12.6px}
th{text-align:left;color:var(--dim);font-weight:600;font-size:10.5px;text-transform:uppercase;
  letter-spacing:.6px;padding:9px 12px;border-bottom:1px solid var(--line);
  position:sticky;top:0;background:var(--panel);z-index:1}
td{padding:9px 12px;border-bottom:1px solid #20262a;vertical-align:top}
tr.click{cursor:pointer}
tr.click:hover td{background:#1b2226}
tr.on td{background:#1d2a26}
tr.new td{animation:flash 1.8s ease}
@keyframes flash{0%{background:#12432e}100%{background:transparent}}
@keyframes fade{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}

/* ---------- bits ---------- */
.badge{font-size:10.5px;padding:2px 8px;border-radius:20px;background:#173a2c;color:var(--greenI);
  white-space:nowrap;display:inline-block}
.badge.b{background:#1b3a63;color:var(--blueI)}
.badge.y{background:#4a3312;color:#f0c069}
.badge.r{background:#4a1f1c;color:var(--redI)}
.badge.n{background:#262c31;color:var(--dim)}
.badge.v{background:#2e2350;color:#c3aeff}
.grade{width:26px;height:26px;border-radius:7px;display:grid;place-items:center;
  font-weight:800;font-size:13px}
.grade.A{background:#16543a;color:#8ff0bd}
.grade.B{background:#4a3a12;color:#f0d089}
.grade.C{background:#3a2a2a;color:#e0a79f}
.bar{height:6px;border-radius:6px;background:#242b30;overflow:hidden}
.bar > i{display:block;height:100%;background:linear-gradient(90deg,#1f9d63,#4fd39a)}
.bar.y > i{background:linear-gradient(90deg,#b58318,#e8c063)}
.bar.r > i{background:linear-gradient(90deg,#a83b2c,#e58374)}
.kv{display:grid;grid-template-columns:130px 1fr;gap:5px 10px;font-size:12.7px}
.kv b{color:var(--dim);font-weight:500}
.empty{padding:26px;text-align:center;color:var(--dim);font-size:12.5px}
.chip{background:#22303a;border:1px solid #2f3f4a;color:#cfe0e6;font-size:11.5px;
  padding:5px 10px;border-radius:14px;cursor:pointer;font-family:inherit}
.chip:hover{border-color:var(--green);color:#fff}
.dot{width:8px;height:8px;border-radius:50%;background:var(--green);display:inline-block}
.pulse{animation:p 1.8s infinite}
@keyframes p{0%{box-shadow:0 0 0 0 rgba(31,157,99,.6)}70%{box-shadow:0 0 0 9px rgba(31,157,99,0)}100%{box-shadow:0 0 0 0 rgba(31,157,99,0)}}

/* chat bubbles */
.chat{background:#0b141a;padding:13px;display:flex;flex-direction:column;gap:8px;overflow-y:auto}
.msg{max-width:86%;padding:8px 11px;border-radius:11px;line-height:1.45;font-size:13.1px;
  white-space:pre-wrap;word-break:break-word;animation:fade .25s ease}
.msg.in{background:var(--waIn);align-self:flex-start;border-top-left-radius:3px}
.msg.out{background:var(--wa);align-self:flex-end;border-top-right-radius:3px}
.msg small{display:block;color:#8fa2ab;font-size:10px;margin-top:4px;text-align:right}
.typing{align-self:flex-start;background:var(--waIn);padding:11px 14px;border-radius:11px;display:flex;gap:4px}
.typing i{width:6px;height:6px;background:#7d8f98;border-radius:50%;animation:bnc 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes bnc{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}