:root{--bg: #0f1318;--bg2: #171c24;--bg3: #1e2530;--border: rgba(255, 255, 255, .07);--text: #e8ecf0;--text2: #8b97a8;--text3: #566272;--teal: #5eead4;--teal-dark: #0d9488;--amber: #f59e0b;--orange: #fb923c;--red: #f87171;--radius: 14px;--radius-sm: 8px;--shadow: 0 4px 24px rgba(0, 0, 0, .35);--font-serif: "DM Serif Display", Georgia, serif;--font-sans: "DM Sans", system-ui, sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);font-weight:400;line-height:1.6;min-height:100vh}.page{min-height:100vh;display:flex;flex-direction:column}.page-center{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem 1rem;gap:2rem}.standalone-header{display:flex;flex-direction:column;align-items:center;gap:.5rem;animation:fadeDown .5s ease both}.brand-word-large{font-family:var(--font-serif);font-size:2rem;background:linear-gradient(135deg,var(--teal),var(--teal-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.01em}.brand-sub{font-size:.8rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--text3)}.top-bar{background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.top-bar-inner{max-width:800px;margin:0 auto;padding:.9rem 1.5rem;display:flex;align-items:center;justify-content:space-between}.top-bar-brand{display:flex;align-items:center;gap:.6rem}.brand-word{font-family:var(--font-serif);font-size:1.25rem;background:linear-gradient(135deg,var(--teal),var(--teal-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.top-bar-student{display:flex;flex-direction:column;align-items:flex-end;gap:.05rem}.student-label{font-size:.65rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--text3)}.student-name{font-size:.95rem;font-weight:600;color:var(--text)}.student-class{font-size:.75rem;color:var(--text2)}.main-content{max-width:800px;margin:0 auto;width:100%;padding:2rem 1.5rem 3rem;display:flex;flex-direction:column;gap:2.5rem;animation:fadeUp .5s ease both .1s}.section{display:flex;flex-direction:column;gap:1rem}.section-title{font-family:var(--font-serif);font-size:1.35rem;font-weight:400;color:var(--text);border-left:3px solid var(--teal);padding-left:.75rem}.section-hint{font-size:.85rem;color:var(--text2);margin-top:-.25rem}.today-inactive{display:flex;flex-direction:column;gap:.25rem;padding:.75rem 1rem;background:var(--bg2);border-radius:var(--radius-sm);border:1px solid var(--border);font-size:.9rem;color:var(--text2)}.last-active{font-size:.8rem;color:var(--text3)}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}@media (max-width: 520px){.stats-row{grid-template-columns:1fr}}.stat-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.2rem;display:flex;align-items:center;gap:1rem;transition:border-color .2s}.stat-card:hover{border-color:#5eead433}.stat-icon{font-size:1.6rem;flex-shrink:0}.stat-body{display:flex;flex-direction:column;gap:.1rem}.stat-value{font-size:1.5rem;font-weight:600;font-variant-numeric:tabular-nums;line-height:1.1}.stat-label{font-size:.8rem;font-weight:500;color:var(--text);line-height:1.2}.stat-sub{font-size:.72rem;color:var(--text3)}.level-block{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem 1.4rem;display:flex;flex-direction:column;gap:.75rem}.level-header{display:flex;align-items:baseline;gap:.75rem;flex-wrap:wrap}.level-badge{background:#5eead41f;color:var(--teal);font-size:.75rem;font-weight:600;padding:.2rem .6rem;border-radius:999px;letter-spacing:.04em}.level-name{font-size:1rem;font-weight:500;color:var(--text)}.level-xp{margin-left:auto;font-size:.85rem;color:var(--text2);font-variant-numeric:tabular-nums}.level-bar-bg{height:6px;background:#ffffff12;border-radius:999px;overflow:hidden}.level-bar-fill{height:100%;background:linear-gradient(90deg,var(--teal-dark),var(--teal));border-radius:999px;transition:width .6s cubic-bezier(.4,0,.2,1)}.level-hint{font-size:.78rem;color:var(--text3)}.vok-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.85rem}.vok-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.9rem 1rem;display:flex;flex-direction:column;gap:.35rem;transition:border-color .2s,transform .15s}.vok-card:hover{border-color:#5eead433;transform:translateY(-1px)}.vok-top{display:flex;align-items:center;justify-content:space-between;gap:.5rem}.vok-kat{font-size:.68rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase}.diff-bar-row{display:flex;gap:3px;align-items:center}.diff-bar-seg{width:14px;height:4px;border-radius:999px;transition:background .2s}.vok-word{font-size:1rem;font-weight:600;color:var(--text);line-height:1.3}.vok-translation{font-size:.82rem;color:var(--text2)}.empty-state{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;text-align:center;display:flex;flex-direction:column;align-items:center;gap:.75rem;color:var(--text2)}.empty-icon{font-size:2rem}.info-box{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:2.5rem 2rem;max-width:440px;width:100%;text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem;animation:fadeUp .4s ease both .15s}.info-box.error{border-color:#f8717133}.info-icon{font-size:2.5rem}.info-title{font-family:var(--font-serif);font-size:1.4rem;font-weight:400;color:var(--text)}.info-text{font-size:.9rem;color:var(--text2);line-height:1.65}.info-sub{font-size:.8rem;color:var(--text3)}.btn-reload{margin-top:.5rem;background:#5eead41a;border:1px solid rgba(94,234,212,.25);color:var(--teal);padding:.55rem 1.25rem;border-radius:var(--radius-sm);font-family:var(--font-sans);font-size:.85rem;font-weight:500;cursor:pointer;transition:background .2s,border-color .2s}.btn-reload:hover{background:#5eead42e;border-color:#5eead466}.loading-container{display:flex;flex-direction:column;align-items:center;gap:1rem;animation:fadeUp .4s ease both .2s}.spinner{width:36px;height:36px;border:3px solid rgba(94,234,212,.15);border-top-color:var(--teal);border-radius:50%;animation:spin .8s linear infinite}.loading-text{font-size:.85rem;color:var(--text3)}.page-footer{text-align:center;font-size:.72rem;color:var(--text3);padding-top:1rem;border-top:1px solid var(--border)}@keyframes fadeUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}.top-bar-label{font-size:.75rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--text3)}.student-block{display:flex;flex-direction:column;gap:2.5rem}.week-chart{display:flex;align-items:flex-end;gap:.5rem;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem 1.25rem .75rem;height:140px}.week-bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:.4rem;height:100%;justify-content:flex-end}.week-bar-wrap{flex:1;display:flex;align-items:flex-end;width:100%;justify-content:center}.week-bar{width:100%;max-width:32px;border-radius:4px 4px 0 0;transition:height .4s cubic-bezier(.4,0,.2,1)}.week-label{font-size:.7rem;color:var(--text3);font-weight:500}.week-label.today{color:var(--teal)}.week-total{font-size:.8rem;color:var(--text2);text-align:center}.login-field{width:100%;display:flex;flex-direction:column;gap:.4rem}.login-input{width:100%;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-family:var(--font-sans);font-size:.95rem;padding:.7rem 1rem;outline:none;transition:border-color .2s}.login-input:focus{border-color:#5eead466}.login-input.invalid{border-color:#f8717180}.login-error{font-size:.78rem;color:var(--red);text-align:left}.btn-primary{width:100%;background:linear-gradient(135deg,var(--teal-dark),var(--teal));border:none;border-radius:var(--radius-sm);color:#0f1318;font-family:var(--font-sans);font-size:.95rem;font-weight:600;padding:.75rem 1.5rem;cursor:pointer;transition:opacity .2s}.btn-primary:hover{opacity:.88}.top-bar-right{display:flex;align-items:center;gap:1rem}.btn-logout{background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text2);font-family:var(--font-sans);font-size:.78rem;font-weight:500;padding:.35rem .85rem;cursor:pointer;transition:border-color .2s,color .2s}.btn-logout:hover{border-color:#f8717166;color:var(--red)}