:root {
  --bg: #f8fafc;
  --bg-gradient: linear-gradient(145deg, #f8fafc 0%, #eff2f6 100%);
  --panel: rgba(255, 255, 255, 0.7);
  --panel-2: rgba(255, 255, 255, 0.4);
  --text: #0f172a;
  --muted: #64748b;
  --border: rgba(226, 232, 240, 0.8);
  --accent: #4f46e5;
  --accent-2: #ec4899;
  --accent-3: #8b5cf6;
  --accent-soft: rgba(79, 70, 229, 0.08);
  --danger: #ef4444;
  --shadow: 0 10px 40px -10px rgba(15, 23, 42, 0.1);
  --shadow-hover: 0 20px 50px -10px rgba(15, 23, 42, 0.15);
  --radius: 24px;
  --backdrop: blur(20px) saturate(180%);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg-gradient);
  background-attachment:fixed;
  color:var(--text);
}
body.dark {
  --bg: #0b0f19;
  --bg-gradient: radial-gradient(circle at 15% 50%, rgba(79, 70, 229, 0.1), transparent 25%), radial-gradient(circle at 85% 30%, rgba(236, 72, 153, 0.1), transparent 25%), #0b0f19;
  --panel: rgba(30, 41, 59, 0.4);
  --panel-2: rgba(30, 41, 59, 0.6);
  --text: #f8fafc;
  --muted: #94a3b8;
  --border: rgba(51, 65, 85, 0.5);
  --accent-soft: rgba(79, 70, 229, 0.15);
  --shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 20px 50px -10px rgba(0, 0, 0, 0.7);
}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.app-shell{min-height:100vh;display:grid;grid-template-columns:260px 1fr}
.sidebar{
  position:sticky;top:0;height:100vh;padding:26px 18px;
  background:var(--panel);backdrop-filter:var(--backdrop);-webkit-backdrop-filter:var(--backdrop);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:20
}
.brand{display:flex;align-items:center;gap:12px;padding:0 8px 24px}
.brand-mark{
  width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
  color:#fff;font-weight:900;background:linear-gradient(135deg,var(--accent),var(--accent-2))
}
.brand strong{display:block;letter-spacing:.08em}
.brand span{font-size:11px;color:var(--muted)}
.nav{display:flex;flex-direction:column;gap:6px;overflow-y:auto;overflow-x:hidden;padding-right:4px}
.nav::-webkit-scrollbar{width:4px}
.nav::-webkit-scrollbar-track{background:transparent}
.nav::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
.nav::-webkit-scrollbar-thumb:hover{background:var(--muted)}
.nav-item{
  border:0;background:transparent;color:var(--muted);padding:11px 13px;border-radius:12px;
  display:flex;gap:10px;align-items:center;text-align:left;transition:all 0.25s;
}
.nav-item:hover,.nav-item.active{background:var(--accent-soft);color:var(--accent);font-weight:700;transform:translateX(4px)}
.sidebar-footer{margin-top:auto;padding-top:16px}
.developer-credit{margin-top:16px;text-align:center}
.developer-credit small{color:var(--muted);font-size:11px}
.developer-credit a{color:var(--accent);text-decoration:none;font-weight:700;transition:color 0.2s}
.developer-credit a:hover{color:var(--accent-2);text-decoration:underline}
.ghost-btn,.secondary-btn,.text-btn,.danger-btn,.icon-btn{
  border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:12px
}
.ghost-btn{width:100%;padding:11px}
.main{padding:24px 34px 50px;min-width:0}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.topbar h1{margin:2px 0 0;font-size:26px}
.eyebrow{font-size:11px;letter-spacing:.14em;font-weight:800;color:var(--accent);margin:0 0 6px}
.badge{padding:8px 12px;border-radius:999px;background:var(--panel);border:1px solid var(--border);font-size:12px;color:var(--muted)}
.view{display:none}
.view.active{display:block}
.card{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);
  backdrop-filter:var(--backdrop);-webkit-backdrop-filter:var(--backdrop);transition:box-shadow 0.3s, transform 0.3s;
}
.card:hover{box-shadow:var(--shadow-hover)}
.hero{padding:42px;display:grid;grid-template-columns:1.4fr .6fr;align-items:center;overflow:hidden}
.hero h2{font-size:52px;line-height:1.05;margin:14px 0}
.hero h2 span{color:var(--accent)}
.hero p{max-width:650px;color:var(--muted);font-size:17px;line-height:1.7}
.pill{display:inline-flex;background:var(--accent-soft);color:var(--accent);padding:8px 12px;border-radius:999px;font-size:12px;font-weight:800}
.hero-actions{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}
.primary-btn,.secondary-btn,.danger-btn{
  padding:13px 18px;border-radius:16px;font-weight:800;transition:all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.primary-btn{border:0;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2),var(--accent-3));background-size:200% auto;box-shadow:0 12px 30px rgba(79,70,229,.3)}
.primary-btn:hover{transform:translateY(-2px);background-position:right center;box-shadow:0 15px 35px rgba(236,72,153,.4)}
.secondary-btn{background:var(--panel);color:var(--text);border:1px solid var(--border)}
.danger-btn{color:#fff;background:var(--danger);border:0}
.compact{padding:9px 12px}
.wide{width:100%;margin-top:14px}
.hero-orb{display:grid;place-items:center;min-height:260px;position:relative}
.hero-orb:before,.hero-orb:after{
  content:"";position:absolute;border-radius:50%;border:1px solid var(--border)
}
.hero-orb:before{width:260px;height:260px}
.hero-orb:after{width:200px;height:200px}
.orb-inner{
  width:150px;height:150px;border-radius:50%;display:grid;place-items:center;
  color:#fff;font-size:70px;font-weight:900;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 25px 70px rgba(109,93,252,.35);z-index:2
}
.section-head{display:flex;justify-content:space-between;align-items:end;margin:32px 0 16px}
.section-head h3,.card-head h3{margin:0}
.tool-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.tool-card{
  min-height:150px;text-align:left;padding:20px;border-radius:20px;background:var(--panel);
  backdrop-filter:var(--backdrop);-webkit-backdrop-filter:var(--backdrop);
  border:1px solid var(--border);color:var(--text);box-shadow:var(--shadow);
  transition:all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.tool-card:hover{border-color:var(--accent);transform:translateY(-4px) scale(1.02);box-shadow:var(--shadow-hover)}
.tool-card span{font-size:28px;display:block;margin-bottom:22px}
.tool-card strong,.tool-card small{display:block}
.tool-card small{color:var(--muted);margin-top:6px;line-height:1.4}
.dashboard-grid{display:grid;grid-template-columns:1.4fr .6fr;gap:16px;margin-top:18px}
.dashboard-grid>.card{padding:22px}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px}
.text-btn{border:0;color:var(--accent);background:transparent;font-weight:700;padding:8px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:20px}
.stats div{background:var(--panel-2);border-radius:15px;padding:18px}
.stats strong{font-size:26px;display:block}
.stats span{font-size:11px;color:var(--muted)}
.workspace{padding:28px;max-width:980px;margin:auto}
.workspace-head h2,.workspace h2{margin:3px 0 8px;font-size:30px}
.workspace p{color:var(--muted)}
.center-workspace{text-align:center;max-width:720px}
.input-stack{display:flex;flex-direction:column;gap:10px;margin:22px 0 12px}
.option-row,.weighted-row,.compare-row,.criterion-row{display:flex;gap:8px;align-items:center}
input,textarea,select{
  width:100%;background:var(--panel-2);border:1px solid var(--border);color:var(--text);
  border-radius:14px;padding:12px 16px;outline:none;transition:all 0.25s;
}
textarea{resize:vertical;line-height:1.5}
input:focus,textarea:focus,select:focus{border-color:var(--accent);background:var(--panel);box-shadow:0 0 0 4px rgba(79,70,229,.15)}
.remove-btn{
  width:42px;height:42px;border:1px solid var(--border);border-radius:12px;background:var(--panel);
  color:var(--danger);font-weight:900
}
.result-panel{
  margin-top:18px;padding:22px;border-radius:18px;background:var(--accent-soft);
  border:1px solid rgba(109,93,252,.22);text-align:center
}
.result-panel strong{display:block;color:var(--accent);font-size:32px;margin-top:8px}
.hidden{display:none!important}
.split-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
.split-layout>.card{padding:24px}
.wheel-card{position:relative;text-align:center}
#wheelCanvas{width:min(100%,560px);height:auto;display:block;margin:0 auto 12px}
.wheel-pointer{position:absolute;top:8px;left:50%;transform:translateX(-50%);font-size:32px;color:var(--accent);z-index:2}
.result-inline{font-weight:800;margin-top:14px;color:var(--accent);min-height:24px}
.large-input{max-width:560px;margin:15px auto}
.big-result{font-size:88px;font-weight:900;color:var(--accent);margin-top:30px;min-height:120px}
.coin{
  width:180px;height:180px;border-radius:50%;margin:24px auto;display:grid;place-items:center;
  background:radial-gradient(circle at 35% 30%,#f7e8a5,#d7a932 65%,#a47c11);
  box-shadow:0 22px 45px rgba(0,0,0,.2);transform-style:preserve-3d
}
.coin.flipping{animation:coinFlip .9s ease-in-out}
@keyframes coinFlip{0%{transform:rotateY(0) scale(1)}50%{transform:rotateY(900deg) scale(1.12)}100%{transform:rotateY(1800deg) scale(1)}}
.coin-face{font-weight:900;font-size:70px;color:#6a4b00;text-shadow:0 2px 0 rgba(255,255,255,.4)}
.mini-stats{display:flex;justify-content:center;gap:24px;color:var(--muted);margin-top:10px}
.row-fields{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0}
label{font-size:12px;color:var(--muted);font-weight:700;text-align:left}
label input,label select{margin-top:6px}
.check{display:flex;align-items:center;gap:9px;margin:12px 0}
.check input{width:auto;margin:0}
.dice-display{font-size:54px;margin:25px 0;letter-spacing:8px;min-height:70px}
.number-results{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.number-chip{padding:12px 16px;border-radius:12px;background:var(--accent-soft);color:var(--accent);font-weight:800}
.teams-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:20px}
.team-card{padding:18px;background:var(--panel-2);border-radius:16px}
.team-card h4{margin:0 0 12px}
.team-card ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.8}
.weighted-list{display:flex;flex-direction:column;gap:10px;margin:20px 0}
.weighted-row input:first-child{flex:1}
.weighted-row input:nth-child(2){width:130px}
.compare-builder{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}
.compare-row,.criterion-row{margin-bottom:9px}
.criterion-row input:last-of-type{width:100px}
.matrix-wrap{overflow:auto;margin-top:20px}
.matrix{border-collapse:collapse;width:100%;min-width:620px}
.matrix th,.matrix td{border:1px solid var(--border);padding:10px;text-align:center}
.matrix th{background:var(--panel-2)}
.matrix input{min-width:70px;text-align:center}
.rank-list{display:flex;flex-direction:column;gap:10px;margin-top:20px}
.rank-item{display:flex;justify-content:space-between;align-items:center;padding:16px;background:var(--panel-2);border-radius:14px}
.rank-item:first-child{border:1px solid var(--accent);background:var(--accent-soft)}
.history-list,.recent-list{display:flex;flex-direction:column;gap:10px}
.history-item,.recent-item{
  display:flex;justify-content:space-between;gap:18px;align-items:center;
  padding:14px 16px;background:var(--panel-2);border-radius:14px
}
.history-item small,.recent-item small{color:var(--muted)}
.empty-state{color:var(--muted);padding:26px 0}
.toast{
  position:fixed;right:24px;bottom:24px;padding:13px 16px;background:#111827;color:#fff;
  border-radius:12px;box-shadow:var(--shadow);transform:translateY(100px);opacity:0;
  transition:.25s;z-index:99
}
.toast.show{transform:translateY(0);opacity:1}
.mobile-only{display:none}
.icon-btn{padding:10px}
@media(max-width:1100px){
  .tool-grid{grid-template-columns:repeat(3,1fr)}
  .hero h2{font-size:44px}
}
@media(max-width:820px){
  .app-shell{display:block}
  .sidebar{
    position:fixed;left:-280px;width:260px;transition:.25s;box-shadow:var(--shadow)
  }
  .sidebar.open{left:0}
  .main{padding:18px}
  .mobile-only{display:inline-flex}
  .topbar{gap:12px}
  .topbar>div:nth-child(2){flex:1}
  .top-actions{display:none}
  .hero{grid-template-columns:1fr;padding:28px}
  .hero-orb{display:none}
  .hero h2{font-size:38px}
  .tool-grid{grid-template-columns:repeat(2,1fr)}
  .dashboard-grid,.split-layout,.compare-builder{grid-template-columns:1fr}
  .row-fields{grid-template-columns:1fr}
}
@media(max-width:520px){
  .tool-grid{grid-template-columns:1fr}
  .hero h2{font-size:34px}
  .hero-actions{flex-direction:column}
  .hero-actions button{width:100%}
  .workspace{padding:20px}
  .stats{grid-template-columns:1fr}
  .teams-grid{grid-template-columns:1fr}
  .history-item,.recent-item{align-items:flex-start;flex-direction:column}
}