/* OlymPhyX V4 — contextual Phi, adaptive engine, structured bank and skill model */
html{scroll-padding-top:104px}
[id]{scroll-margin-top:112px}
body.v4-ready{--v4-soft:#f4f9fd;--v4-ink:#102947;--v4-cyan:#20b9d5;--v4-blue:#4f72f5;--v4-violet:#7b67ef;--v4-green:#15a883;--v4-amber:#d58a1f}
.v4-badge{display:inline-flex;align-items:center;gap:6px;border:1px solid #d5e4ef;background:#f7fbfe;color:#526b85;border-radius:999px;padding:6px 10px;font-size:10px;font-weight:700;white-space:nowrap}
.v4-badge.blue{background:#eef5ff;border-color:#d1dfff;color:#315cad}.v4-badge.good{background:#edf9f5;border-color:#c9eadf;color:#168268}.v4-badge.warn{background:#fff8ed;border-color:#f2ddba;color:#a76b16}.v4-badge.violet{background:#f4f1ff;border-color:#dfd6ff;color:#684fc4}
.v4-kicker{font-size:11px;letter-spacing:.12em;font-weight:800;color:#0786a6;text-transform:uppercase}
.v4-section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:18px}.v4-section-title h2{margin:5px 0 0;font:700 26px/1.12 Space Grotesk,Inter,sans-serif;color:#102947}.v4-section-title p{margin:5px 0 0;color:#6d8197;font-size:13px}
.v4-card{background:#fff;border:1px solid #d7e5ef;border-radius:22px;box-shadow:0 14px 36px rgba(42,79,112,.06)}
.v4-panel{padding:22px}
.v4-grid{display:grid;gap:16px}.v4-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.v4-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.v4-progress{height:7px;background:#e7eef5;border-radius:99px;overflow:hidden}.v4-progress>i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#22bfd4,#6475f4)}
.v4-metric-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.v4-mini-metric{padding:14px;border:1px solid #dce7f0;background:#f9fcfe;border-radius:15px}.v4-mini-metric small{display:block;color:#7b8da1;font-size:10px}.v4-mini-metric b{display:block;color:#173451;margin-top:3px;font-size:18px}

/* Sidebar additions */
.side-nav a.v4-nav-active{background:#eaf4fb;color:#164c78}.side-nav a.v4-nav-active>span:first-child{color:#0797b4}

/* Adaptive dashboard */
.v4-adaptive-strip{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:16px;margin-bottom:16px}
.v4-plan-summary{padding:22px;position:relative;overflow:hidden;background:linear-gradient(135deg,#ffffff,#f2fbff)}
.v4-plan-summary:after{content:"";position:absolute;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(31,190,215,.12),transparent 66%);right:-70px;top:-105px;pointer-events:none}
.v4-plan-summary h2{margin:5px 0 8px;font:700 25px Space Grotesk,Inter,sans-serif;color:#102947}.v4-plan-summary p{margin:0 0 15px;color:#667c94;max-width:720px}.v4-next-card{padding:20px;background:linear-gradient(145deg,#effaff,#f5f3ff);border-color:#cfe3f2}.v4-next-card h3{margin:6px 0 7px;font:700 19px Space Grotesk,Inter,sans-serif}.v4-next-card p{font-size:12px;color:#6c8096;margin:0 0 14px}.v4-next-actions{display:flex;gap:8px;flex-wrap:wrap}

/* Training plan */
.v4-page-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin:6px 0 24px}.v4-page-hero h1{font:700 clamp(36px,4vw,48px)/1.02 Space Grotesk,Inter,sans-serif;margin:6px 0 8px;color:#0c2a4c}.v4-page-hero p{max-width:760px;color:#687e95;margin:0;font-size:16px}.v4-readiness{min-width:210px;padding:16px 18px}.v4-readiness b{font-size:28px;color:#173451}.v4-plan-list{display:grid;gap:14px}.v4-plan-item{display:grid;grid-template-columns:64px minmax(0,1fr) auto;gap:16px;align-items:center;padding:18px 20px}.v4-plan-order{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(145deg,#e7f8fc,#eef1ff);font:700 20px Space Grotesk;color:#087f9d}.v4-plan-item h3{margin:0 0 4px;font:700 19px Space Grotesk,Inter,sans-serif}.v4-plan-item p{margin:0;color:#6f8297;font-size:12px}.v4-plan-meta{display:flex;gap:7px;flex-wrap:wrap;margin-top:8px}.v4-plan-why{border-left:3px solid #25b9d2;padding-left:12px;margin-top:9px;font-size:11px;color:#557089}.v4-plan-item .btn{white-space:nowrap}
.v4-engine-note{padding:20px;margin-top:16px;background:linear-gradient(135deg,#f7fbfe,#fbfaff)}.v4-engine-note ul{margin:10px 0 0;padding-left:18px;color:#64798f;font-size:12px}.v4-engine-note li{margin:6px 0}

/* Skills */
.v4-skill-toolbar{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:16px;flex-wrap:wrap}.v4-filter-row{display:flex;gap:8px;flex-wrap:wrap}.v4-filter-row button{border:1px solid #d5e4ef;background:#fff;color:#536d86;border-radius:999px;padding:8px 12px;font-size:11px;font-weight:700;cursor:pointer}.v4-filter-row button.active{background:#153c65;color:#fff;border-color:#153c65}.v4-skill-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.v4-skill-card{padding:17px 18px}.v4-skill-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.v4-skill-card h3{font:700 17px Space Grotesk;margin:0;color:#173451}.v4-skill-card p{margin:4px 0 12px;font-size:11px;color:#788ba0}.v4-skill-score{font:700 21px Space Grotesk;color:#173451}.v4-skill-foot{display:flex;justify-content:space-between;gap:10px;margin-top:9px;font-size:10px;color:#788b9e}.v4-skill-foot .up{color:#168268}.v4-skill-foot .down{color:#b76d25}
.v4-area-summary{display:grid;grid-template-columns:repeat(7,minmax(110px,1fr));gap:9px;overflow:auto;padding-bottom:4px;margin-bottom:16px}.v4-area-chip{padding:12px;border:1px solid #dae6ef;border-radius:14px;background:#fff;min-width:118px}.v4-area-chip small{display:block;color:#7a8da0;font-size:9px}.v4-area-chip b{display:block;font-size:19px;margin:2px 0 6px;color:#173451}

/* Problem bank */
.v4-bank-toolbar{display:grid;grid-template-columns:minmax(240px,1fr) auto;gap:12px;margin:12px 0 18px}.v4-bank-search{display:flex;align-items:center;gap:8px;border:1px solid #d6e3ed;border-radius:13px;background:#fff;padding:0 13px}.v4-bank-search input{border:0;outline:0;background:transparent;width:100%;padding:11px 0;color:#173451}.v4-bank-selects{display:flex;gap:8px}.v4-bank-selects select{border:1px solid #d6e3ed;background:#fff;border-radius:12px;padding:10px 12px;color:#405e79}.v4-problem-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.v4-problem-card{padding:19px;display:flex;flex-direction:column;min-height:260px;transition:.18s transform,.18s box-shadow}.v4-problem-card:hover{transform:translateY(-2px);box-shadow:0 18px 42px rgba(39,79,115,.10)}.v4-problem-top{display:flex;justify-content:space-between;gap:10px}.v4-problem-icon{width:42px;height:42px;border-radius:13px;background:#eaf8fc;display:grid;place-items:center;color:#078dab;font:700 18px Georgia}.v4-problem-card h3{font:700 18px Space Grotesk;margin:13px 0 7px;color:#102947}.v4-problem-card p{font-size:12px;color:#6d8095;margin:0 0 14px;flex:1}.v4-problem-skill{font-size:10px;color:#516c84;margin-bottom:12px}.v4-problem-actions{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:auto}.v4-problem-actions a{font-size:11px;font-weight:800;color:#087eaa}.v4-solved-mark{color:#168268;font-size:11px;font-weight:800}.v4-empty{padding:34px;text-align:center;color:#71859a}

/* Dynamic problem workspace */
.v4-problem-header{margin-bottom:16px}.v4-problem-header h1{font:700 clamp(32px,4vw,46px)/1.05 Space Grotesk,Inter,sans-serif;margin:5px 0 7px;color:#0d2c4f}.v4-problem-header p{margin:0;color:#6e8297}.v4-problem-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(280px,.55fr);gap:18px}.v4-problem-main,.v4-problem-aside{padding:24px}.v4-problem-statement{font-size:15px;color:#4e6983;line-height:1.65;margin:0 0 18px}.v4-givens{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-bottom:16px}.v4-given{border:1px solid #d9e6ef;background:#f8fbfd;border-radius:14px;padding:12px}.v4-given small{display:block;color:#7f90a2;font-size:9px}.v4-given b{font-size:13px;color:#173451}.v4-equation{min-height:110px;border:1px solid #d4e4ee;background:linear-gradient(135deg,#f2f9fd,#f7f7ff);border-radius:17px;display:grid;place-items:center;text-align:center;padding:20px;font:italic 27px Georgia,serif;color:#102e52}.v4-tolerance{display:flex;align-items:center;gap:7px;margin:11px 0 0;font-size:10px;color:#687e94}.v4-answer-panel{margin-top:18px;border:1px solid #d7e5ee;border-radius:17px;padding:17px;background:#fff}.v4-answer-row{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-top:9px}.v4-answer-row input{width:150px;border:1px solid #cfdfea;border-radius:12px;padding:12px;color:#173451;background:#fbfdff}.v4-result{display:none;margin-top:12px;border-radius:12px;padding:11px 12px;font-size:12px}.v4-result.show{display:block}.v4-result.good{background:#edf9f5;border:1px solid #c5e9dc;color:#126f59}.v4-result.bad{background:#fff5f2;border:1px solid #f0d5cd;color:#9b4b39}.v4-hints{display:grid;gap:9px;margin-top:12px}.v4-hint{display:none;border:1px solid #d9e6ef;background:#f7fbfd;border-radius:13px;padding:12px;font-size:11px;color:#61768c}.v4-hint.show{display:block}.v4-problem-aside h2{font:700 22px Space Grotesk;margin:4px 0 8px}.v4-problem-aside .btn{width:100%;margin-top:12px}.v4-independence{margin-top:14px;padding:14px;border-radius:14px;background:#eef7fb;border:1px solid #d1e4ee}.v4-independence b{font-size:12px}.v4-independence p{font-size:10px;color:#6d8297;margin:5px 0 0}

/* Phi V4 */
.phi-v4-context{margin:16px 16px 0;padding:15px;border:1px solid #d8e6ef;border-radius:16px;background:linear-gradient(145deg,#f4fbfe,#f7f5ff)}.phi-v4-context-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.phi-v4-context h3{font:700 17px Space Grotesk;margin:7px 0 5px;color:#173451}.phi-v4-context p{font-size:10px;line-height:1.5;color:#6a7f95;margin:0}.phi-v4-context .v4-context-skill{display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid #dce7ef;margin-top:11px;padding-top:10px;font-size:10px;color:#62798f}.phi-v4-context .v4-context-skill b{font-size:11px;color:#1a4f76}.phi-v4-context .v4-progress{height:5px;margin-top:8px}.phi-v4-mode{font-size:9px;color:#137f9c;background:#eaf9fc;border:1px solid #cdebf0;border-radius:999px;padding:4px 7px;font-weight:800}.phi-v4-actions{padding:0 16px 10px;display:flex;gap:7px;flex-wrap:wrap}.phi-v4-actions button{border:1px solid #d4e4ee;background:#fff;color:#4e6880;border-radius:999px;padding:7px 10px;font-size:10px;cursor:pointer}.phi-v4-actions button:hover{background:#f2f9fd}.phi-v4-thinking{opacity:.68;font-style:italic}.phi-drawer .phi-chat{scrollbar-width:thin}
@media(min-width:1000px){body:not(.dashboard-body).phi-open .drawer-backdrop{display:none!important}body:not(.dashboard-body).phi-open .phi-fab{opacity:0;pointer-events:none}}

/* Home desktop: no dark overlay */
@media(min-width:1000px){body.v4-home.phi-open .drawer-backdrop{display:none!important}.v4-home.phi-open .phi-drawer{box-shadow:-22px 0 55px rgba(42,71,105,.14)}}

/* Progress enhancements */
.v4-evidence-list{display:grid;gap:9px}.v4-evidence-row{display:grid;grid-template-columns:minmax(160px,1fr) 110px 80px;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid #e4edf3;font-size:11px}.v4-evidence-row:last-child{border-bottom:0}.v4-evidence-row b{color:#173451}.v4-evidence-row span{color:#6c8195}

/* Studio V4 library */
.v4-studio-bank{margin-top:14px;border-top:1px solid #dce6ef;padding-top:13px}.v4-studio-bank h4{margin:0 0 8px;font-size:12px;color:#173451}.v4-studio-bank p{font-size:10px;color:#6e8297}.v4-studio-bank .btn{width:100%;font-size:11px}

@media(max-width:1180px){.v4-problem-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.v4-skill-list{grid-template-columns:1fr}.v4-adaptive-strip{grid-template-columns:1fr}.v4-plan-item{grid-template-columns:54px 1fr}.v4-plan-item>.btn{grid-column:2}.v4-problem-layout{grid-template-columns:1fr}.v4-problem-aside{order:-1}.v4-metric-row{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.v4-grid.three,.v4-grid.two,.v4-problem-grid{grid-template-columns:1fr}.v4-bank-toolbar{grid-template-columns:1fr}.v4-bank-selects{flex-wrap:wrap}.v4-page-hero{display:block}.v4-readiness{margin-top:14px}.v4-plan-item{grid-template-columns:1fr}.v4-plan-order{width:44px;height:44px}.v4-plan-item>.btn{grid-column:auto}.v4-givens{grid-template-columns:1fr}.v4-metric-row{grid-template-columns:1fr}.v4-problem-main,.v4-problem-aside{padding:18px}.v4-answer-row{align-items:stretch}.v4-answer-row input{width:100%}.v4-answer-row .btn{width:100%}}