:root{--bg:#eef4ff;--panel:rgba(255,255,255,.92);--text:#0f172a;--muted:#64748b;--primary:#2563eb;--primary2:#1d4ed8;--border:rgba(148,163,184,.38);--input:#fff7dc;--ok:#16a34a;--ng:#dc2626;--warn:#b45309;--shadow:0 20px 50px rgba(15,23,42,.13);--radius:24px;--safe-bottom:env(safe-area-inset-bottom,0px)}
:root[data-theme="dark"]{--bg:#020617;--panel:rgba(15,23,42,.92);--text:#e5e7eb;--muted:#94a3b8;--primary:#60a5fa;--primary2:#2563eb;--border:rgba(148,163,184,.22);--input:#172033;--shadow:0 20px 60px rgba(0,0,0,.35)}
*{box-sizing:border-box}body{margin:0;font-family:'Segoe UI',Arial,'Noto Sans',sans-serif;background:var(--bg);color:var(--text)}button,input,select{font:inherit}button{border:0;border-radius:14px;padding:12px 16px;font-weight:800;cursor:pointer;background:var(--primary2);color:#fff}button.secondary{background:#475569}.ghost{background:#eef2ff;color:#1e40af;border:1px solid #c7d2fe}.warn{background:var(--warn)}a{color:inherit;text-decoration:none}.hidden{display:none!important}.ok{color:var(--ok)}.ng{color:var(--ng)}.hint{color:var(--muted);line-height:1.6}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:12px;color:var(--primary);font-weight:900}.landing-page{background:#000;color:#fff;overflow-x:hidden}.landing-theme{position:fixed;top:16px;right:16px;z-index:10;border-radius:999px;background:rgba(255,255,255,.12);backdrop-filter:blur(10px)}.landing-section{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:70px 10%;text-align:center}.hero{background:radial-gradient(circle at top,#1e3a8a,#000 62%)}.hero h1{font-size:clamp(3rem,10vw,6rem);letter-spacing:6px}.hero p,.landing-desc{font-size:clamp(1.05rem,2vw,1.5rem);color:#cbd5e1;margin:20px 0}.big{font-size:clamp(3rem,8vw,8rem);font-weight:900;line-height:1.1}.highlight,.num{color:#60a5fa}.dark-block{background:#050505}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:28px;width:min(1000px,100%)}.landing-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:24px;padding:36px}.num{font-size:3rem;font-weight:900}.footer{text-align:center;background:#020617;padding:70px 20px;color:#cbd5e1}.open-app-btn{display:inline-flex;margin-top:28px;padding:16px 24px;border-radius:999px;background:#2563eb;color:#fff;font-weight:900;box-shadow:0 15px 40px rgba(37,99,235,.35)}.open-app-btn.secondary{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18)}
.app-page{min-height:100vh;background:linear-gradient(135deg,var(--bg),#f8fafc)}:root[data-theme="dark"] .app-page{background:linear-gradient(135deg,#020617,#0f172a)}.app-shell{display:grid;grid-template-columns:290px 1fr;min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;padding:22px;background:rgba(15,23,42,.94);color:#fff;display:flex;flex-direction:column;gap:22px}.brand{display:flex;align-items:center;gap:12px}.brand h1{font-size:20px;margin:0}.brand p{margin:2px 0 0;color:#cbd5e1}.logo{width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,#2563eb,#60a5fa);display:grid;place-items:center;font-weight:900}.nav-tabs{display:flex;flex-direction:column;gap:8px}.tab{width:100%;text-align:left;background:rgba(255,255,255,.08);color:#e5e7eb;border:1px solid rgba(255,255,255,.08);padding:13px 14px;border-radius:16px}.tab.active,.tab:hover{background:#2563eb}.content{padding:24px 24px 96px;min-width:0}.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px}.topbar h2{font-size:32px;margin:4px 0}.top-actions{display:flex;gap:10px;align-items:center}.icon-btn{width:46px;height:46px;border-radius:50%;padding:0}.page{display:none}.page.active{display:block}.hero-card,.card,.kpi,.module-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(16px)}.hero-card{padding:30px;margin-bottom:16px}.hero-card h2{font-size:clamp(2rem,4vw,4rem);margin:0}.module-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.module-card{padding:24px;text-align:left;color:var(--text);display:flex;flex-direction:column;gap:10px;min-height:150px}.module-card b{font-size:20px}.module-card span{color:var(--muted);line-height:1.5}.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:16px}.kpi{padding:18px}.kpi b{display:block;color:var(--muted);font-size:12px;text-transform:uppercase}.kpi span{font-size:30px;font-weight:900}.two-col{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(330px,.82fr);gap:16px}.card{padding:20px;margin-bottom:16px}.card h3{margin:0 0 16px;color:var(--primary)}.form-grid{display:grid;gap:12px}.form-grid.two{grid-template-columns:repeat(2,1fr)}.form-grid.three{grid-template-columns:repeat(3,1fr)}.form-grid.four{grid-template-columns:repeat(4,1fr)}label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:800;color:var(--muted)}input,select{width:100%;border:1px solid var(--border);border-radius:12px;padding:12px;background:var(--input);color:var(--text);min-height:46px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.svgbox{border:1px solid var(--border);border-radius:18px;background:rgba(148,163,184,.08);padding:8px;overflow:hidden}.svgbox svg{width:100%;height:auto;max-height:360px}.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:10px}.dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:5px}.blue{background:#2563eb}.green{background:#16a34a}.red{background:#dc2626}.section-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.responsive-note{font-size:12px;color:var(--muted)}.mini-tabs{display:flex;gap:8px;margin-bottom:12px}.mini-tab{background:#e2e8f0;color:#334155}.mini-tab.active{background:var(--primary2);color:#fff}.tableWrap{overflow:auto;border:1px solid var(--border);border-radius:16px;max-height:62vh}table{border-collapse:separate;border-spacing:0;width:100%;font-size:13px;min-width:1120px;background:var(--panel)}th{position:sticky;top:0;background:#123a7a;color:#fff;z-index:2;padding:10px;white-space:nowrap}td{border-bottom:1px solid var(--border);border-right:1px solid var(--border);padding:6px;text-align:center;white-space:nowrap}td:first-child,th:first-child{position:sticky;left:0;z-index:3}td:first-child{background:var(--panel);font-weight:900}td input{min-width:86px;padding:8px;text-align:right}.resultCell{font-weight:900}.pass{color:var(--ok)}.fail{color:var(--ng)}.summaryLine{color:var(--muted);font-size:13px}.result-box{border:1px solid var(--border);border-radius:18px;padding:18px;background:rgba(37,99,235,.08);font-weight:900;margin-top:14px}.big-result{font-size:24px}.history-list{display:grid;gap:10px;margin:16px 0}.history-item{padding:12px;border:1px solid var(--border);border-radius:14px;background:rgba(148,163,184,.08)}.mobile-hole-cards{display:none}.bottom-nav{display:none}
@media (max-width:1200px){.app-shell{grid-template-columns:240px 1fr}.form-grid.four{grid-template-columns:repeat(2,1fr)}.module-grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:1fr}.summary-grid{grid-template-columns:repeat(4,1fr)}}
@media (min-width:768px) and (max-width:1180px) and (orientation:portrait){.optional-col,td.optional-col{display:none}.tableWrap table{min-width:820px}.summary-grid{grid-template-columns:repeat(2,1fr)}.form-grid.four,.form-grid.three{grid-template-columns:repeat(2,1fr)}}
@media (min-width:768px) and (max-width:1180px) and (orientation:landscape){.optional-col,td.optional-col{display:table-cell}.tableWrap table{min-width:1120px}.form-grid.four{grid-template-columns:repeat(4,1fr)}}
@media (max-width:767px){.app-shell{display:block}.sidebar{display:none}.content{padding:14px 12px calc(86px + var(--safe-bottom));}.app-topbar{position:sticky;top:0;z-index:10;background:rgba(238,244,255,.84);backdrop-filter:blur(18px);margin:-14px -12px 14px;padding:14px 12px;border-bottom:1px solid var(--border)}:root[data-theme="dark"] .app-topbar{background:rgba(2,6,23,.84)}.topbar h2{font-size:22px}.install-btn{display:none}.summary-grid{grid-template-columns:repeat(2,1fr)}.kpi{padding:14px}.kpi span{font-size:24px}.form-grid,.form-grid.two,.form-grid.three,.form-grid.four{grid-template-columns:1fr}.module-grid{grid-template-columns:1fr}.two-col{grid-template-columns:1fr}.card{padding:16px;border-radius:20px}.hero-card{padding:22px}.section-head{display:block}.tableWrap{display:none}.mobile-hole-cards{display:grid;gap:12px}.hole-card{border:1px solid var(--border);border-radius:18px;padding:14px;background:rgba(148,163,184,.08)}.hole-card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.hole-card h4{margin:0;font-size:18px}.pill{border-radius:999px;padding:5px 10px;font-size:12px;font-weight:900}.pill.pass{background:rgba(22,163,74,.15)}.pill.fail{background:rgba(220,38,38,.15)}.hole-card-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.hole-card label{font-size:12px}.hole-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}.metric{border:1px solid var(--border);border-radius:12px;padding:8px;text-align:center}.metric small{display:block;color:var(--muted);font-size:10px}.metric b{font-size:13px}.bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:20;display:grid;grid-template-columns:repeat(6,1fr);gap:2px;padding:8px 6px calc(8px + var(--safe-bottom));background:rgba(15,23,42,.94);backdrop-filter:blur(18px);border-top:1px solid rgba(255,255,255,.08)}.bottom-nav button{background:transparent;color:#cbd5e1;border-radius:14px;padding:8px 4px;font-size:18px}.bottom-nav button.active{background:#2563eb;color:#fff}.bottom-nav span{display:block;font-size:10px;margin-top:2px}.svgbox svg{max-height:260px}.landing-section{padding:60px 20px}.actions button{flex:1 1 auto}}
@media print{.sidebar,.bottom-nav,.topbar,.actions,.mini-tabs{display:none}.app-shell{display:block}.content{padding:0}.card,.kpi{box-shadow:none}.tableWrap{display:block;max-height:none;overflow:visible}body{background:#fff}}
.formula-box{border:1px dashed var(--border);border-radius:18px;padding:16px;margin-top:14px;background:rgba(148,163,184,.10);line-height:1.6}.formula-box h4{margin:0 0 8px;color:var(--primary)}.formula-box p{margin:6px 0}.advice-list{border:1px solid var(--border);border-radius:18px;padding:14px;background:rgba(148,163,184,.08);line-height:1.55}.advice-list p{margin:0 0 10px}.soft-line{border:0;border-top:1px solid var(--border);margin:18px 0}.cnc-results{margin-top:16px}
@media(max-width:767px){.cnc-results{grid-template-columns:repeat(2,1fr)}.formula-box{font-size:13px}}

/* CNC Hub extension */
.cnc-hub{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:14px 0 16px}.cnc-tool{min-height:96px;text-align:left;border-radius:18px;border:1px solid var(--border);background:linear-gradient(135deg,rgba(37,99,235,.10),rgba(148,163,184,.08));color:var(--text);padding:14px;display:flex;flex-direction:column;gap:8px;justify-content:flex-start}.cnc-tool b{font-size:16px}.cnc-tool span{font-size:12px;line-height:1.35;color:var(--muted)}.cnc-tool.active{background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;border-color:#60a5fa;box-shadow:0 14px 30px rgba(37,99,235,.25)}.cnc-tool.active span{color:#dbeafe}.cnc-tool.coming{opacity:.72;position:relative}.cnc-tool.coming:after{content:'Sắp có';position:absolute;right:10px;top:10px;font-size:10px;background:rgba(245,158,11,.18);color:#b45309;border:1px solid rgba(245,158,11,.35);border-radius:999px;padding:3px 7px}:root[data-theme="dark"] .cnc-tool.coming:after{color:#fcd34d}.cnc-current{display:inline-flex;gap:8px;align-items:center;margin:0 0 14px;padding:10px 14px;border-radius:999px;border:1px solid var(--border);background:rgba(148,163,184,.10);color:var(--muted)}.cnc-current b{color:var(--primary)}
@media(max-width:1180px){.cnc-hub{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:820px){.cnc-hub{grid-template-columns:repeat(2,minmax(0,1fr))}.cnc-tool{min-height:88px}}@media(max-width:520px){.cnc-hub{grid-template-columns:1fr}.cnc-tool{min-height:76px}}
.subsection-title{margin:18px 0 12px;padding:10px 14px;border-radius:14px;background:var(--soft);border:1px solid var(--line);font-weight:900;color:var(--text);letter-spacing:.2px}
/* v17 CNC Hub professional grouping */
.cnc-hub-pro{display:flex;flex-direction:column;gap:18px;margin:14px 0 18px}
.cnc-group{border:1px solid var(--border);border-radius:22px;padding:14px;background:rgba(148,163,184,.06)}
.cnc-group h4{margin:0 0 12px;font-size:14px;color:var(--muted);letter-spacing:.02em;text-transform:uppercase}
.cnc-group .cnc-hub{margin:0;grid-template-columns:repeat(3,minmax(0,1fr))}
.inner-card{box-shadow:none;margin-top:10px;background:rgba(148,163,184,.05)}
@media(min-width:1200px){.cnc-group .cnc-hub{grid-template-columns:repeat(5,minmax(0,1fr))}}
@media(max-width:920px){.cnc-group .cnc-hub{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.cnc-group .cnc-hub{grid-template-columns:1fr}.cnc-current{width:100%;justify-content:center}}

/* v18 Quick Vc to RPM & Feed calculator */
.quick-cut-card{margin-top:4px;border:1px solid rgba(37,99,235,.32);background:linear-gradient(135deg,rgba(37,99,235,.08),rgba(148,163,184,.04));box-shadow:none}
.quick-cut-card h3{margin-bottom:4px}.quick-results{margin-top:16px}.quick-results .kpi span{font-size:22px}.quick-formula{margin-bottom:18px}.quick-formula p{margin:4px 0}.quick-result code,.quick-cut-card code{display:inline-block;margin-top:8px;padding:7px 10px;border-radius:10px;background:rgba(15,23,42,.10);font-weight:800;color:var(--text)}
@media(max-width:767px){.quick-results{grid-template-columns:repeat(2,1fr)}.quick-results .kpi span{font-size:18px}}

/* V19 - Máy tính nhanh CNC */
.cnc-page-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:18px}.cnc-page-head h2{margin:0 0 6px;font-size:clamp(26px,3vw,40px)}.cnc-page-head p{margin:0;color:var(--muted)}.cnc-back{white-space:nowrap}.cnc-menu-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.cnc-menu-card{min-height:170px;padding:22px;border:1px solid var(--border);border-radius:22px;background:var(--panel);color:var(--text);text-align:left;display:flex;flex-direction:column;align-items:flex-start;gap:10px;box-shadow:var(--shadow);transition:transform .18s ease,border-color .18s ease}.cnc-menu-card:hover{transform:translateY(-3px);border-color:#60a5fa}.cnc-menu-card .tool-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:14px;background:rgba(37,99,235,.12);font-size:24px}.cnc-menu-card b{font-size:20px}.cnc-menu-card small{font-size:13px;line-height:1.5;color:var(--muted)}.cnc-menu-card.primary-card{background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;border-color:#60a5fa}.cnc-menu-card.primary-card small{color:#dbeafe}.cnc-menu-card.primary-card .tool-icon{background:rgba(255,255,255,.18)}.cnc-menu-card.coming{opacity:.65}.cnc-tool-panel{max-width:1180px;margin-inline:auto}.quick-choice-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}.quick-choice-row button{background:rgba(148,163,184,.12);color:var(--text);border:1px solid var(--border)}.quick-choice-row button.active{background:#2563eb;color:#fff;border-color:#60a5fa}.quick-simple-inputs{max-width:720px}.advanced-details{margin-top:14px;border:1px solid var(--border);border-radius:16px;padding:12px 14px;background:rgba(148,163,184,.06)}.advanced-details summary{cursor:pointer;font-weight:800;color:var(--muted)}.advanced-details .form-grid{margin-top:12px}.quick-output-main{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}.quick-number{border:1px solid var(--border);border-radius:18px;padding:18px;background:rgba(148,163,184,.08)}.quick-number small,.quick-number span{display:block;color:var(--muted)}.quick-number strong{display:block;font-size:clamp(28px,4vw,42px);line-height:1.1;margin:8px 0}.quick-number.accent{background:rgba(37,99,235,.12);border-color:rgba(37,99,235,.35)}
@media(max-width:980px){.cnc-menu-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.quick-output-main{grid-template-columns:repeat(2,1fr)}}
@media(max-width:767px){.cnc-page-head{position:sticky;top:58px;z-index:9;background:var(--bg);padding:10px 0}.cnc-page-head h2{font-size:23px}.cnc-page-head p{display:none}.cnc-back{width:100%;font-size:15px;padding:12px 14px}.cnc-menu-grid{grid-template-columns:1fr;gap:12px}.cnc-menu-card{min-height:112px;padding:16px;display:grid;grid-template-columns:48px 1fr;grid-template-rows:auto auto;column-gap:12px}.cnc-menu-card .tool-icon{grid-row:1/3}.cnc-menu-card b{font-size:18px}.cnc-menu-card small{font-size:12px}.quick-output-main{grid-template-columns:1fr 1fr}.quick-number{padding:14px}.quick-number strong{font-size:27px}.quick-choice-row{position:sticky;top:118px;z-index:8;background:var(--panel);padding:8px 0}.cnc-tool-panel{padding:15px}}

/* V22 - Công thức động cho máy tính nhanh CNC */
.quick-formula-details{margin-top:14px;border:1px solid var(--border);border-radius:18px;background:rgba(37,99,235,.06);overflow:hidden}.quick-formula-details summary{cursor:pointer;padding:14px 16px;font-weight:900;color:var(--primary);list-style:none;display:flex;align-items:center;justify-content:space-between}.quick-formula-details summary::-webkit-details-marker{display:none}.quick-formula-details summary:after{content:'＋';font-size:20px}.quick-formula-details[open] summary:after{content:'−'}.quick-formula-live{padding:0 16px 16px;display:grid;gap:10px}.formula-step{border:1px solid var(--border);border-radius:14px;padding:13px;background:var(--panel)}.formula-step b{display:block;margin-bottom:7px}.formula-main{font-weight:900;color:var(--text);font-family:Consolas,'Courier New',monospace;overflow-wrap:anywhere}.formula-sub{margin-top:7px;padding:9px 10px;border-radius:10px;background:rgba(148,163,184,.12);color:var(--primary);font-weight:800;font-family:Consolas,'Courier New',monospace;overflow-wrap:anywhere}.formula-note{margin:2px 0 0}.quick-formula-details[open] summary{border-bottom:1px solid var(--border)}
@media(max-width:767px){.quick-formula-details summary{padding:13px 14px}.quick-formula-live{padding:0 12px 12px}.formula-step{padding:11px}.formula-main,.formula-sub{font-size:12px;line-height:1.55}}

/* V25 - Fix module placement without an independent desktop scroller */
html, body.app-page {
  overflow-x: hidden;
}
.content, .page, .topbar {
  overflow-anchor: none;
}
.page.active {
  display: block;
  position: static;
  margin: 0;
  transform: none;
}
#gdt.active .module-grid,
#unit.active,
#history.active,
#settings.active {
  align-items: start;
}
@media (min-width:768px) {
  .app-shell {
    min-height: 100vh;
    align-items: start;
  }
  .sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
  }
  .content {
    min-height: 100vh;
    height: auto;
    overflow: visible;
    align-self: start;
  }
}