:root{--bg:#100b08;--surface:#19120e;--surface-2:#241812;--line:#3a2a21;--text:#f3f7f3;--muted:#a18f84;--lime:#ff9b3d;--lime-soft:#3a2416;--danger:#ffb3b3;--radius:22px;--shadow:0 22px 60px rgba(0,0,0,.3);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:radial-gradient(circle at 78% -10%,rgba(255,145,64,.16),transparent 32rem),var(--bg);color:var(--text);font-size:16px;line-height:1.5}button,input{font:inherit}button,a{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(255,155,61,.35);outline-offset:2px}
.sidebar{position:fixed;inset:0 auto 0 0;z-index:5;width:255px;padding:26px 20px;display:flex;flex-direction:column;border-right:1px solid var(--line);background:rgba(17,11,8,.95);backdrop-filter:blur(18px)}.brand{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none}.brand-mark{width:45px;height:45px;display:grid;place-items:center;border-radius:15px;background:linear-gradient(145deg,var(--lime),#ff6f3d);color:#0c1408;font-size:13px;font-weight:900;letter-spacing:-.04em;box-shadow:0 10px 30px rgba(255,155,61,.18)}.brand strong,.brand small{display:block}.brand strong{font-size:17px;letter-spacing:.08em}.brand small{color:var(--muted);font-size:11px;letter-spacing:.2em}.nav{display:grid;gap:7px;margin-top:72px}.nav a{min-height:49px;display:flex;align-items:center;padding:0 16px;border-radius:14px;color:#949e96;text-decoration:none;font-size:15px;font-weight:700}.nav a:hover{background:#211611;color:#dbe2dc}.nav a.is-active{background:var(--lime);color:#1b1008}.logout-form{margin-top:auto}.logout-form button{width:100%;min-height:44px;border:1px solid var(--line);border-radius:13px;background:#18110d;color:#aab2ac;cursor:pointer}
.main-shell{max-width:1540px;margin-left:255px;padding:34px 38px 80px}.view{max-width:1240px;margin:0 auto}.page-heading{min-height:100px;display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:20px}.eyebrow{margin:0 0 8px;color:var(--lime);font-size:.75rem;font-weight:800;letter-spacing:.16em}.page-heading h1,.login-card h1{margin:0;font-size:clamp(2.3rem,5vw,4.2rem);line-height:1;letter-spacing:-.055em}.muted{margin:11px 0 0;color:var(--muted)}.status-pill{margin-top:8px;padding:9px 14px;border:1px solid var(--line);border-radius:999px;background:#211711;color:#d3c3b8;font-size:.78rem;font-weight:800}.status-pill.is-progress{border-color:#8c5731;background:#3b2417;color:#ffd0a0}.status-pill.is-complete{border-color:#9a5e32;background:#3a2418;color:#ffd1a6}
.lesson-card{padding:28px;border:1px solid #4a3429;border-radius:28px;background:radial-gradient(circle at 92% 0,rgba(255,155,61,.14),transparent 22rem),linear-gradient(145deg,#211713,#15100d);box-shadow:var(--shadow)}.lesson-topline{display:flex;justify-content:space-between;color:#c8b6a9;font-size:.75rem;font-weight:800;letter-spacing:.14em}.lesson-topline strong{color:var(--text);font-size:1rem}.lesson-progress{height:10px;overflow:hidden;margin:14px 0 25px;border-radius:99px;background:#35251c}.lesson-progress span{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--lime),#ff6f3d);transition:width .35s ease}.lesson-plan{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.plan-item{padding:15px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.025)}.plan-item strong,.plan-item span{display:block}.plan-item strong{font-size:.9rem}.plan-item span{margin-top:5px;color:var(--muted);font-size:.78rem}.lesson-actions{display:flex;gap:10px;margin-top:22px}.primary-button,.secondary-button{min-height:48px;padding:0 20px;border-radius:15px;font-weight:800;cursor:pointer}.primary-button{border:0;background:var(--lime);color:#1b1008;box-shadow:0 10px 26px rgba(255,155,61,.14)}.secondary-button{border:1px solid #4a3328;background:#251914;color:#f2e8e1}.primary-button:disabled,.secondary-button:disabled{opacity:.45;cursor:default}
.today-summary{margin-top:16px;padding:18px 20px;display:flex;flex-wrap:wrap;gap:10px 18px;border:1px solid #5f3d28;border-radius:18px;background:#24170f}.today-summary strong{width:100%;color:var(--lime)}.today-summary span{color:#e0d0c6}.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:16px}.metrics article{min-height:145px;padding:20px;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(145deg,#171b18,#111412);box-shadow:var(--shadow)}.metrics span,.profile-card span{color:#baaaa0;font-size:.82rem;font-weight:700}.metrics strong{margin-top:auto;font-size:2.25rem;line-height:1;letter-spacing:-.04em}.metrics small{margin-top:7px;color:var(--muted)}.metrics .accent-card{border-color:#5f3d28;background:radial-gradient(circle at 100% 0,rgba(255,155,61,.17),transparent 11rem),#24170f}.metrics .accent-card strong{color:var(--lime)}
.grammar-toolbar{display:grid;gap:12px;margin-bottom:16px}.grammar-toolbar input{width:100%;min-height:50px;border:1px solid #49352a;border-radius:15px;padding:0 16px;background:#120c09;color:#fff}.grammar-categories{display:flex;gap:8px;flex-wrap:wrap}.grammar-filter{min-height:38px;padding:0 13px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:#aeb7b0;font-weight:800;cursor:pointer}.grammar-filter.is-active{border-color:var(--lime);background:var(--lime);color:#1b1008}.grammar-list{display:grid;gap:10px}.grammar-card{border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:var(--shadow);overflow:hidden}.grammar-card summary{list-style:none;display:flex;justify-content:space-between;gap:18px;align-items:center;padding:20px 22px;cursor:pointer}.grammar-card summary::-webkit-details-marker{display:none}.grammar-card h2{margin:9px 0 0;font-size:1.15rem}.grammar-card summary p{margin:6px 0 0;color:var(--muted);font-size:.88rem}.grammar-marker{font-size:1.7rem;color:var(--lime)}.grammar-body{padding:0 22px 22px;border-top:1px solid var(--line)}.grammar-body>strong{display:block;margin-top:18px;color:#b8c2ba}.grammar-body p{margin:7px 0 0;color:#e1e8e2}.grammar-body ul{margin:8px 0 0;padding-left:20px;color:#d8e0da}.grammar-body li+li{margin-top:7px}.progress-totals{margin-top:16px}.history-card{padding:22px;border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:var(--shadow)}.history-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}.history-head h2{margin:0;font-size:1.15rem}.history-head time{display:block;margin-top:4px;color:var(--muted);font-size:.82rem}.history-detail{display:grid;grid-template-columns:190px 1fr;gap:14px;padding-top:14px;margin-top:14px;border-top:1px solid var(--line)}.history-detail strong{font-size:.8rem;color:#c0aea2}.history-detail span{color:#f3e8e1}.profile-card{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:var(--line);box-shadow:var(--shadow)}.profile-card div{padding:24px;background:var(--surface)}.profile-card strong{display:block;margin-top:14px;font-size:1.55rem}.score-list{display:grid;gap:10px;margin-top:16px}.score-row{display:grid;grid-template-columns:130px 1fr 50px;align-items:center;gap:16px;padding:17px 20px;border:1px solid var(--line);border-radius:17px;background:var(--surface)}.score-track{height:8px;overflow:hidden;border-radius:99px;background:#35251c}.score-track span{display:block;height:100%;background:linear-gradient(90deg,var(--lime),#ff6f3d)}.score-row strong{text-align:right}
.add-form{padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}.add-form h2{margin:0 0 16px;font-size:1.2rem}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:11px;margin-bottom:14px}.form-grid label,.login-form label{display:grid;gap:6px;color:#c6b4a8;font-size:.78rem;font-weight:700}.form-grid .wide{grid-column:1/-1}.form-grid input,.login-form input{width:100%;min-height:46px;border:1px solid #49352a;border-radius:13px;padding:0 13px;background:#120c09;color:#fff}.form-status{margin-left:12px;color:#ffb36d;font-size:.85rem}.vocabulary-list,.history-list{display:grid;gap:9px;margin-top:16px}.vocabulary-item,.history-item{display:grid;grid-template-columns:minmax(160px,1fr) minmax(180px,1.2fr) auto;gap:18px;align-items:center;padding:17px 20px;border:1px solid var(--line);border-radius:17px;background:var(--surface)}.vocabulary-item strong,.vocabulary-item span{display:block}.vocabulary-item small{display:block;margin-top:4px;color:var(--muted)}.tag{padding:6px 9px;border-radius:999px;background:var(--lime-soft);color:#ffc27d;font-size:.7rem;font-weight:800;text-transform:uppercase}.history-item{grid-template-columns:1fr auto}.history-item time{font-weight:800}.empty-state{padding:28px;border:1px dashed #49352a;border-radius:18px;color:var(--muted);text-align:center}.error-banner,.login-error{margin:0 0 18px;padding:13px 16px;border:1px solid #713d3d;border-radius:14px;background:#2a1717;color:var(--danger)}
.mobile-nav{display:none}.login-body{min-height:100vh;display:grid;place-items:center;padding:20px}.login-card{width:min(460px,100%);padding:34px;border:1px solid var(--line);border-radius:28px;background:linear-gradient(145deg,#181d19,#101311);box-shadow:var(--shadow)}.login-brand{margin-bottom:46px}.login-card h1{font-size:2.8rem}.login-form{display:grid;gap:14px;margin-top:28px}.login-form .primary-button{margin-top:4px}
@media(max-width:1050px){.lesson-plan{grid-template-columns:repeat(3,1fr)}.metrics{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.history-detail{grid-template-columns:1fr;gap:4px}.history-head{display:grid}.history-head .tag{justify-self:start}.today-summary{display:grid}.progress-totals{grid-template-columns:1fr!important}body{padding-bottom:76px}.sidebar{position:static;width:auto;height:72px;padding:13px 17px;display:flex;flex-direction:row;align-items:center;border-right:0;border-bottom:1px solid var(--line)}.sidebar .brand-mark{width:40px;height:40px;border-radius:13px}.sidebar .brand strong{font-size:14px}.sidebar .nav{display:none}.logout-form{margin:0 0 0 auto}.logout-form button{width:auto;padding:0 13px}.main-shell{margin:0;padding:24px 16px 42px}.page-heading{min-height:0;margin-bottom:18px}.page-heading h1{font-size:2.65rem}.status-pill{white-space:nowrap}.lesson-card{padding:20px;border-radius:22px}.lesson-plan{grid-template-columns:1fr 1fr}.lesson-plan .plan-item:last-child{grid-column:1/-1}.lesson-actions{display:grid}.metrics{gap:9px}.metrics article{min-height:130px;padding:16px;border-radius:18px}.metrics strong{font-size:1.9rem}.profile-card{grid-template-columns:1fr}.score-row{grid-template-columns:100px 1fr 44px;padding:15px}.form-grid{grid-template-columns:1fr}.form-grid .wide{grid-column:auto}.vocabulary-item{grid-template-columns:1fr auto}.vocabulary-item>div:nth-child(2){grid-column:1/-1;grid-row:2}.mobile-nav{position:fixed;z-index:10;inset:auto 0 0;display:grid;grid-template-columns:repeat(5,1fr);padding:8px 8px calc(8px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:rgba(13,16,14,.95);backdrop-filter:blur(18px)}.mobile-nav a{min-height:48px;display:grid;place-items:center;border-radius:12px;color:#a49388;text-decoration:none;font-size:.72rem;font-weight:800}.mobile-nav a.is-active{background:var(--lime);color:#1b1008}}
@media(max-width:440px){.page-heading{display:block}.status-pill{display:inline-flex;margin-top:15px}.metrics{grid-template-columns:1fr 1fr}.metrics article{min-height:122px}.lesson-plan{grid-template-columns:1fr}.lesson-plan .plan-item:last-child{grid-column:auto}.profile-card div{padding:19px}.add-form{padding:19px}.score-row{grid-template-columns:86px 1fr 38px;gap:9px}.mobile-nav a{font-size:.66rem}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.cheatsheet-table-wrap{max-width:100%;margin-top:10px;overflow:auto;border:1px solid var(--line);border-radius:14px;background:#100b08}.cheatsheet-table{width:100%;min-width:650px;border-collapse:collapse;font-size:.84rem}.cheatsheet-table th,.cheatsheet-table td{padding:11px 13px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.cheatsheet-table th{position:sticky;top:0;background:#1d1510;color:#ffbf82;font-size:.72rem;letter-spacing:.04em;text-transform:uppercase}.cheatsheet-table tr:last-child td{border-bottom:0}.cheatsheet-table tbody tr:hover td{background:rgba(255,155,61,.055)}
.parallax-card{transform:perspective(1150px) rotateX(var(--parallax-rx,0deg)) rotateY(var(--parallax-ry,0deg)) translateZ(0);transform-style:preserve-3d;transition:transform .22s ease,box-shadow .22s ease;will-change:transform}.parallax-card:hover{box-shadow:0 28px 70px rgba(0,0,0,.38)}.parallax-card>*{transform:translateZ(7px)}
@media(max-width:760px),(prefers-reduced-motion:reduce){.parallax-card,.parallax-card:hover{transform:none!important;transition:none;box-shadow:var(--shadow)}.parallax-card>*{transform:none}}

/* MARTENAS ENGLISH visual identity: warm orange, dimensional artwork, restrained motion. */
.brand-mark{width:52px;height:52px;overflow:hidden;background:linear-gradient(145deg,#ff9a31,#8f360f);box-shadow:0 12px 34px rgba(255,116,20,.23)}.brand-mark img{width:118%;height:118%;object-fit:contain}
.heading-badges{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}.heading-badges span{padding:7px 10px;border:1px solid #593821;border-radius:999px;background:rgba(67,35,17,.7);color:#ffc98f;font-size:.74rem;font-weight:800}
.lesson-card{position:relative;isolation:isolate;overflow:hidden;border-color:#583820;background:radial-gradient(circle at 88% 18%,rgba(255,151,43,.2),transparent 19rem),linear-gradient(145deg,#281810,#120d0a)}.lesson-card>*:not(.lesson-visual){position:relative;z-index:2}.lesson-visual{position:absolute;z-index:1;right:-2%;top:-25%;width:min(31vw,330px);opacity:.9;filter:drop-shadow(0 25px 35px rgba(0,0,0,.38));pointer-events:none;transform:translateZ(38px) rotate(-4deg)}.lesson-topline{padding-right:min(28vw,310px)}.lesson-progress{width:calc(100% - min(25vw,280px))}.lesson-plan{width:calc(100% - min(20vw,220px))}
.metrics article{position:relative;overflow:hidden;background:linear-gradient(145deg,#201713,#120e0b)}.metrics article>*:not(.metric-icon){position:relative;z-index:2}.metric-icon{position:absolute;z-index:1;right:-7px;top:-14px;width:92px;height:92px;object-fit:contain;opacity:.9;filter:drop-shadow(0 15px 20px rgba(0,0,0,.28));pointer-events:none;transform:translateZ(26px)}.metrics article:hover .metric-icon{transform:translateZ(34px) translateY(-3px) rotate(2deg)}
.primary-button,.nav a.is-active,.grammar-filter.is-active,.mobile-nav a.is-active{background:linear-gradient(135deg,#ff8a1f,#ffbd55)}.lesson-progress span,.score-track span{background:linear-gradient(90deg,#ff7a1a,#ffc15a);box-shadow:0 0 22px rgba(255,140,35,.25)}.tag{border:1px solid #55351f;background:#3a2112;color:#ffc27d}.login-card{background:radial-gradient(circle at 90% 0,rgba(255,139,31,.17),transparent 16rem),linear-gradient(145deg,#241710,#100c09)}
.parallax-card{position:relative}.parallax-card::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:radial-gradient(circle at var(--parallax-x,50%) var(--parallax-y,50%),rgba(255,185,108,.075),transparent 36%);opacity:0;transition:opacity .2s ease}.parallax-card:hover::after{opacity:1}.parallax-card>.lesson-visual,.parallax-card>.metric-icon{transform:translateZ(30px)}
@media(max-width:1050px){.lesson-visual{width:290px;right:-6%}.lesson-plan{width:calc(100% - 130px)}}
@media(max-width:760px){.brand-mark{width:46px!important;height:46px!important}.lesson-visual{width:170px;right:-35px;top:-30px;opacity:.48}.lesson-topline{padding-right:95px}.lesson-progress,.lesson-plan{width:100%}.metric-icon{width:78px;height:78px}.parallax-card>.lesson-visual,.parallax-card>.metric-icon{transform:none}.heading-badges{margin-top:13px}}