/* ===========================================================
   ProblemBank — shared design system
   =========================================================== */

:root{
  --navy-900:#0b1120;
  --navy-800:#101a30;
  --navy-700:#16213f;
  --indigo-600:#4f46e5;
  --indigo-500:#6366f1;
  --indigo-100:#e9e8ff;
  --teal-500:#14b8a6;
  --teal-100:#d7f7f2;
  --amber-500:#f59e0b;
  --amber-100:#fef3d6;
  --rose-500:#f43f5e;
  --rose-100:#ffe4e8;
  --slate-900:#0f172a;
  --slate-700:#334155;
  --slate-500:#64748b;
  --slate-300:#cbd5e1;
  --slate-200:#e2e8f0;
  --slate-100:#f1f5f9;
  --slate-50:#f8fafc;
  --white:#ffffff;
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow-md:0 6px 20px rgba(15,23,42,.08);
  --shadow-lg:0 20px 45px rgba(15,23,42,.12);
  --maxw:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--slate-900);
  background:var(--slate-50);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.2;letter-spacing:-.01em;}
p{margin:0 0 1em;color:var(--slate-700);}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section-tight{padding:44px 0;}
.section-head{max-width:620px;margin:0 0 40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--indigo-600);background:var(--indigo-100);
  padding:5px 12px;border-radius:99px;margin-bottom:14px;
}

/* ---------- Nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(11,17,32,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:#fff;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg,var(--indigo-500),var(--teal-500));
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;color:#fff;
}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{color:rgba(255,255,255,.72);font-size:14.5px;font-weight:500;transition:color .15s;}
.nav-links a:hover,.nav-links a.active{color:#fff;}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-mobile-toggle{display:none;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:10px;font-size:14.5px;font-weight:600;
  border:1px solid transparent;transition:transform .12s,box-shadow .12s,background .15s;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--indigo-600);color:#fff;box-shadow:0 8px 20px rgba(79,70,229,.28);}
.btn-primary:hover{background:var(--indigo-500);}
.btn-light{background:#fff;color:var(--slate-900);border-color:var(--slate-200);}
.btn-light:hover{border-color:var(--slate-300);}
.btn-ghost{background:transparent;color:rgba(255,255,255,.85);border-color:rgba(255,255,255,.22);}
.btn-ghost:hover{background:rgba(255,255,255,.08);}
.btn-outline{background:transparent;color:var(--indigo-600);border-color:var(--indigo-600);}
.btn-outline:hover{background:var(--indigo-100);}
.btn-sm{padding:7px 14px;font-size:13px;border-radius:8px;}
.btn-block{width:100%;}
.btn-teal{background:var(--teal-500);color:#fff;}
.btn-teal:hover{background:#0d9c8c;}

/* ---------- Hero ---------- */
.hero{
  background:radial-gradient(1100px 500px at 15% -10%,rgba(99,102,241,.35),transparent 60%),
             radial-gradient(900px 500px at 90% 0%,rgba(20,184,166,.25),transparent 55%),
             var(--navy-900);
  color:#fff;padding:88px 0 100px;
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
.hero h1{font-size:44px;font-weight:800;color:#fff;}
.hero .lead{font-size:17px;color:rgba(255,255,255,.72);max-width:520px;}
.hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:28px;margin-top:44px;flex-wrap:wrap;}
.hero-stat b{display:block;font-size:24px;color:#fff;}
.hero-stat span{font-size:12.5px;color:rgba(255,255,255,.55);text-transform:uppercase;letter-spacing:.05em;}

.hero-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-lg);padding:22px;backdrop-filter:blur(6px);
}
.hero-card h4{color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:rgba(255,255,255,.6);margin-bottom:16px;}

/* ---------- Pipeline stepper ---------- */
.pipeline{display:flex;gap:0;overflow-x:auto;padding-bottom:6px;}
.pipeline-step{
  flex:1;min-width:118px;text-align:center;position:relative;padding:0 6px;
}
.pipeline-step .dot{
  width:38px;height:38px;border-radius:50%;background:#fff;border:2px solid var(--slate-300);
  display:flex;align-items:center;justify-content:center;margin:0 auto 10px;font-weight:700;color:var(--slate-500);
  position:relative;z-index:2;font-size:14px;
}
.pipeline-step .label{font-size:12.5px;font-weight:600;color:var(--slate-600);}
.pipeline-step::before{
  content:"";position:absolute;top:19px;left:-50%;width:100%;height:2px;background:var(--slate-200);z-index:1;
}
.pipeline-step:first-child::before{display:none;}
.pipeline-step.done .dot{background:var(--teal-500);border-color:var(--teal-500);color:#fff;}
.pipeline-step.done::before{background:var(--teal-500);}
.pipeline-step.active .dot{background:var(--indigo-600);border-color:var(--indigo-600);color:#fff;box-shadow:0 0 0 5px var(--indigo-100);}
.pipeline-step.active .label{color:var(--indigo-600);}

/* ---------- Cards ---------- */
.card{
  background:#fff;border:1px solid var(--slate-200);border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
}
.card-pad{padding:22px;}
.grid{display:grid;gap:20px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}

.role-card{
  background:#fff;border:1px solid var(--slate-200);border-radius:var(--radius-md);
  padding:22px;transition:box-shadow .15s,transform .15s;
}
.role-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.role-icon{
  width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  font-size:19px;margin-bottom:14px;
}
.role-card h4{font-size:16px;}
.role-card p{font-size:13.5px;margin-bottom:10px;}
.role-earn{font-size:12.5px;font-weight:600;color:var(--teal-600,#0f766e);background:var(--teal-100);
  display:inline-block;padding:4px 10px;border-radius:99px;}

/* ---------- Badges / tags ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:700;
  padding:4px 10px;border-radius:99px;text-transform:uppercase;letter-spacing:.03em;}
.badge-indigo{background:var(--indigo-100);color:var(--indigo-600);}
.badge-teal{background:var(--teal-100);color:#0f766e;}
.badge-amber{background:var(--amber-100);color:#92400e;}
.badge-rose{background:var(--rose-100);color:#be123c;}
.badge-slate{background:var(--slate-100);color:var(--slate-600,#475569);}
.tag{font-size:12px;color:var(--slate-500);background:var(--slate-100);padding:3px 9px;border-radius:6px;}

/* ---------- Problem card (list) ---------- */
.problem-card{
  display:flex;gap:18px;background:#fff;border:1px solid var(--slate-200);
  border-radius:var(--radius-md);padding:20px;transition:box-shadow .15s;
}
.problem-card:hover{box-shadow:var(--shadow-md);}
.vote-box{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  width:64px;flex-shrink:0;border-right:1px solid var(--slate-100);padding-right:16px;
}
.vote-btn{
  width:34px;height:34px;border-radius:8px;border:1px solid var(--slate-200);background:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--slate-500);
  transition:background .12s,color .12s,border-color .12s;
}
.vote-btn:hover{background:var(--indigo-100);border-color:var(--indigo-500);color:var(--indigo-600);}
.vote-count{font-weight:800;font-size:17px;margin:2px 0;}
.problem-body{flex:1;min-width:0;}
.problem-title-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px;}
.problem-title-row h3{font-size:17px;}
.problem-meta{display:flex;gap:14px;font-size:12.5px;color:var(--slate-500);margin-top:10px;flex-wrap:wrap;}
.problem-meta span{display:flex;align-items:center;gap:5px;}
.tag-row{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap;}

/* ---------- Layout: sidebar + content ---------- */
.layout-2col{display:grid;grid-template-columns:260px 1fr;gap:28px;align-items:start;}
.layout-2col-r{display:grid;grid-template-columns:1fr 320px;gap:28px;align-items:start;}
.sticky{position:sticky;top:90px;}

/* ---------- Filter panel ---------- */
.filter-group{margin-bottom:22px;}
.filter-group h5{font-size:12.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--slate-500);margin-bottom:10px;}
.filter-opt{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--slate-700);padding:6px 0;cursor:pointer;}
.filter-opt input{accent-color:var(--indigo-600);}

/* ---------- Progress bars ---------- */
.progress{height:8px;border-radius:99px;background:var(--slate-100);overflow:hidden;}
.progress > span{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--indigo-600),var(--teal-500));}
.progress-row{display:flex;justify-content:space-between;font-size:12.5px;color:var(--slate-500);margin-top:6px;}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--slate-200);margin-bottom:24px;overflow-x:auto;}
.tab{
  padding:12px 4px;margin-right:22px;font-size:14.5px;font-weight:600;color:var(--slate-500);
  border-bottom:2px solid transparent;white-space:nowrap;cursor:pointer;
}
.tab.active{color:var(--indigo-600);border-color:var(--indigo-600);}
.tab-panel{display:none;}
.tab-panel.active{display:block;}

/* ---------- Role switcher (dashboard) ---------- */
.role-switcher{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px;}
.role-pill{
  display:flex;align-items:center;gap:7px;padding:9px 15px;border-radius:99px;
  border:1px solid var(--slate-200);background:#fff;font-size:13.5px;font-weight:600;color:var(--slate-600);
  cursor:pointer;transition:all .12s;
}
.role-pill .dotstat{width:7px;height:7px;border-radius:50%;background:var(--slate-300);}
.role-pill.active{background:var(--navy-900);color:#fff;border-color:var(--navy-900);}
.role-pill.active .dotstat{background:var(--teal-500);}
.role-pill.inactive{opacity:.5;}

/* ---------- Table ---------- */
.table{width:100%;border-collapse:collapse;font-size:14px;}
.table th{
  text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--slate-500);
  padding:10px 14px;border-bottom:1px solid var(--slate-200);
}
.table td{padding:14px;border-bottom:1px solid var(--slate-100);color:var(--slate-700);}
.table tr:last-child td{border-bottom:none;}

/* ---------- Stat card ---------- */
.stat-card{background:#fff;border:1px solid var(--slate-200);border-radius:var(--radius-md);padding:20px;}
.stat-card .num{font-size:26px;font-weight:800;}
.stat-card .lbl{font-size:12.5px;color:var(--slate-500);text-transform:uppercase;letter-spacing:.04em;}
.stat-card .delta{font-size:12.5px;font-weight:700;}
.up{color:#0f9d6a;}
.down{color:#e11d48;}

/* ---------- Toggle switch ---------- */
.toggle{position:relative;width:44px;height:25px;border-radius:99px;background:var(--slate-300);flex-shrink:0;transition:background .15s;}
.toggle::after{content:"";position:absolute;top:3px;left:3px;width:19px;height:19px;border-radius:50%;background:#fff;transition:left .15s;box-shadow:var(--shadow-sm);}
.toggle.on{background:var(--teal-500);}
.toggle.on::after{left:22px;}

/* ---------- Footer ---------- */
.footer{background:var(--navy-900);color:rgba(255,255,255,.6);padding:52px 0 28px;margin-top:40px;}
.footer .wrap{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;}
.footer h5{color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em;margin-bottom:14px;}
.footer a{display:block;font-size:14px;color:rgba(255,255,255,.6);padding:4px 0;}
.footer a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;font-size:12.5px;text-align:center;color:rgba(255,255,255,.4);}

/* ---------- Page header (inner pages) ---------- */
.page-header{background:var(--navy-900);color:#fff;padding:40px 0;}
.page-header h1{font-size:26px;color:#fff;}
.page-header p{color:rgba(255,255,255,.65);margin:0;}
.breadcrumb{font-size:12.5px;color:rgba(255,255,255,.5);margin-bottom:10px;}
.breadcrumb a{color:rgba(255,255,255,.7);}

/* ---------- Avatar ---------- */
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--indigo-500),var(--teal-500));
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px;flex-shrink:0;}
.avatar-lg{width:76px;height:76px;font-size:26px;border-radius:20px;}

/* ---------- Empty / utility ---------- */
.flex{display:flex;}
.flex-between{display:flex;align-items:center;justify-content:space-between;}
.flex-gap{display:flex;align-items:center;gap:10px;}
.mt-0{margin-top:0;}
.mb-0{margin-bottom:0;}
.muted{color:var(--slate-500);}
.small{font-size:12.5px;}
.center{text-align:center;}
.divider{height:1px;background:var(--slate-200);margin:22px 0;}

/* ---------- Trust / status / AI-label additions ---------- */
.status-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--slate-100);}
.status-row:last-child{border-bottom:none;}
.status-dot{width:9px;height:9px;border-radius:50%;display:inline-block;margin-right:8px;}
.status-ok{background:#0f9d6a;}
.status-watch{background:var(--amber-500);}
.status-down{background:var(--rose-500);}

.ai-tag{
  display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;
  padding:3px 9px;border-radius:99px;background:linear-gradient(90deg,#eef2ff,#e0f7f3);
  color:var(--indigo-600);border:1px solid var(--indigo-100);text-transform:uppercase;letter-spacing:.03em;
}
.guardrail-card{border-left:3px solid var(--teal-500);}
.guardrail-card.warn{border-left-color:var(--amber-500);}
.compliance-badge{
  display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--slate-200);
  border-radius:var(--radius-md);padding:16px 18px;
}
.compliance-badge .icon{width:38px;height:38px;border-radius:10px;background:var(--indigo-100);color:var(--indigo-600);
  display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0;}

/* ---------- Concierge chat ---------- */
.chat-panel{background:#fff;border:1px solid var(--slate-200);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);display:flex;flex-direction:column;height:560px;}
.chat-header{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--slate-100);}
.chat-orb{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--indigo-500),var(--teal-500));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;flex-shrink:0;}
.chat-body{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:14px;}
.chat-row{display:flex;gap:10px;max-width:88%;}
.chat-row.from-user{align-self:flex-end;flex-direction:row-reverse;}
.chat-bubble{padding:11px 14px;border-radius:14px;font-size:14px;line-height:1.5;}
.chat-row.from-agent .chat-bubble{background:var(--slate-100);color:var(--slate-900);border-top-left-radius:4px;}
.chat-row.from-user .chat-bubble{background:var(--indigo-600);color:#fff;border-top-right-radius:4px;}
.chat-avatar{width:28px;height:28px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:13px;}
.chat-row.from-agent .chat-avatar{background:linear-gradient(135deg,var(--indigo-500),var(--teal-500));color:#fff;}
.chat-row.from-user .chat-avatar{background:var(--slate-300);color:var(--slate-700);}
.chat-cards{display:flex;flex-direction:column;gap:8px;margin-top:8px;}
.chat-mini-card{background:#fff;border:1px solid var(--slate-200);border-radius:10px;padding:10px 12px;}
.chat-feedback{display:flex;gap:6px;margin-top:6px;}
.chat-feedback button{width:26px;height:26px;border-radius:7px;border:1px solid var(--slate-200);background:#fff;font-size:12px;color:var(--slate-500);}
.chat-feedback button:hover{background:var(--indigo-100);border-color:var(--indigo-500);color:var(--indigo-600);}
.chat-input-row{display:flex;align-items:center;gap:8px;padding:14px 16px;border-top:1px solid var(--slate-100);}
.chat-input{flex:1;border:1px solid var(--slate-200);border-radius:10px;padding:10px 14px;font-size:14px;font-family:inherit;}
.mic-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--slate-200);background:#fff;display:flex;align-items:center;justify-content:center;color:var(--slate-500);flex-shrink:0;}
.mic-btn.disabled{opacity:.4;cursor:not-allowed;}
.memory-chip{display:flex;align-items:center;justify-content:space-between;background:var(--slate-50);border:1px solid var(--slate-200);border-radius:9px;padding:8px 10px;margin-bottom:8px;font-size:13px;}
.memory-chip button{border:none;background:none;color:var(--slate-400);font-size:14px;cursor:pointer;}
.concierge-fab{
  position:fixed;bottom:24px;right:24px;z-index:60;display:flex;align-items:center;gap:10px;
  background:var(--navy-900);color:#fff;padding:12px 18px 12px 12px;border-radius:99px;
  box-shadow:0 10px 30px rgba(15,23,42,.28);text-decoration:none;
}
.concierge-fab .orb{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--indigo-500),var(--teal-500));
  display:flex;align-items:center;justify-content:center;font-size:15px;}
.concierge-fab span.label{font-size:13.5px;font-weight:600;}

@media (max-width: 900px){
  .hero-grid,.layout-2col,.layout-2col-r{grid-template-columns:1fr;}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr 1fr;}
  .nav-links{display:none;}
  .footer .wrap{grid-template-columns:1fr 1fr;}
}
@media (max-width: 560px){
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}
  .hero h1{font-size:32px;}
}