:root{--indigo: #4f46e5;--bg: #f6f7fb;--card: #ffffff;--text: #1f2430;--muted: #6b7280;--border: #e5e7eb;--green: #16a34a;--red: #dc2626}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}.app{max-width:560px;margin:0 auto;padding:16px calc(16px + env(safe-area-inset-right)) 40px calc(16px + env(safe-area-inset-left))}header{display:flex;align-items:center;justify-content:space-between}h1{font-size:22px;margin:8px 0 16px}.tabs{display:flex;gap:8px;margin-bottom:16px}.tab{flex:1;padding:10px;border:1px solid var(--border);background:var(--card);border-radius:10px;font-size:15px;cursor:pointer}.tab.active{background:var(--indigo);color:#fff;border-color:var(--indigo)}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px;margin-bottom:16px}label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}input{width:100%;padding:12px;font-size:16px;border:1px solid var(--border);border-radius:10px;background:#fff}button{cursor:pointer;font-size:15px}button.primary{width:100%;margin-top:14px;padding:13px;border:none;border-radius:10px;background:var(--indigo);color:#fff;font-weight:600}button.primary:disabled{opacity:.5}.link{background:none;border:none;color:var(--indigo);padding:0}.link.danger{color:var(--red);font-size:13px}.preview{margin-top:16px;padding-top:16px;border-top:1px dashed var(--border)}.row{margin-bottom:10px}.label-uk{display:block;font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}.value{font-size:16px}.word-list{list-style:none;padding:0;margin:0}.word-head{display:flex;justify-content:space-between;align-items:center}.translation{color:var(--indigo);font-weight:600;margin:4px 0}.muted{color:var(--muted)}.small{font-size:13px}.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.chip{padding:6px 12px;border:1px solid var(--border);border-radius:999px;background:#fff;font-size:13px}.chip.small{padding:3px 10px;font-size:12px}.chip.active{background:var(--indigo);color:#fff;border-color:var(--indigo)}.tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}.choices{display:flex;flex-direction:column;gap:10px;margin:16px 0}.choice{padding:14px;border:1px solid var(--border);border-radius:10px;background:#fff;text-align:left;font-size:16px}.choice.correct{border-color:var(--green);background:#ecfdf3}.choice.wrong{border-color:var(--red);background:#fef2f2}.quiz-word{text-align:center;font-size:28px;margin:8px 0}.center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.center-text{text-align:center}.auth-card{max-width:360px;width:100%}.error{color:var(--red);font-size:14px}.input-wrap{position:relative}.input-wrap input{padding-right:40px}.input-clear{position:absolute;top:50%;right:8px;transform:translateY(-50%);width:26px;height:26px;border:none;border-radius:50%;background:var(--border);color:var(--muted);font-size:18px;line-height:1;display:flex;align-items:center;justify-content:center}.load-more{display:block;width:100%;margin:4px 0 16px;padding:10px}.word-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:8px}.word-meta .tags{margin-top:0}.badge{font-size:12px;color:var(--muted);background:var(--bg);border:1px solid var(--border);border-radius:999px;padding:3px 10px;white-space:nowrap}.badge.remembered{color:var(--green);background:#ecfdf3;border-color:var(--green)}.remembered-section{margin-top:8px;border-top:1px solid var(--border);padding-top:12px}.section-toggle{background:none;border:none;padding:6px 0;font-size:15px;font-weight:600;color:var(--text)}.word-details{margin:14px 0 12px;border:1px solid #e0e3f3;border-radius:10px;background:#fafaff;overflow-wrap:anywhere}.word-details summary{display:flex;align-items:center;gap:9px;min-height:46px;padding:11px 12px;color:#4338ca;font-size:13px;font-weight:600;cursor:pointer;list-style:none;border-radius:9px}.word-details summary::-webkit-details-marker{display:none}.word-details summary::marker{content:""}.word-details summary:hover{background:#f0efff}.word-details summary:focus-visible,.details-error button:focus-visible{outline:2px solid var(--indigo);outline-offset:3px}.details-icon{display:inline-flex;flex-shrink:0}.details-chevron{margin-left:auto;flex-shrink:0;transition:transform .15s ease}.word-details[open] .details-chevron{transform:rotate(90deg)}.details-content{padding:0 14px 14px}.word-details[open] summary{margin-bottom:6px}.pronunciation-heading{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 10px}.details-content h3{margin:0;font-size:13px;font-weight:600;color:var(--text)}.accent-label{font-size:11px;color:#555f73}.ipa{margin:8px 0 5px;font-family:Charis SIL,Noto Sans,DejaVu Sans,Segoe UI,sans-serif;font-size:21px;color:#3730a3;line-height:1.5}.pronunciation-hint{margin:0;font-size:13px;line-height:1.6;color:#555f73}.details-content .examples-heading{margin-top:18px}.usage-examples{list-style:none;counter-reset:example;padding:0;margin:10px 0 0}.usage-examples li{position:relative;padding:10px 0 10px 28px;counter-increment:example;border-top:1px solid #e7e8f3}.usage-examples li:before{content:counter(example);position:absolute;left:0;top:12px;width:18px;height:18px;display:grid;place-items:center;border-radius:50%;background:#eeecff;color:#4338ca;font-size:10px;font-weight:600}.usage-examples li:last-child{padding-bottom:0}.example-english{margin:0 0 3px;font-size:14px;line-height:1.5}.example-ukrainian{margin:0;font-size:13px;line-height:1.5;color:#555f73}.details-status{display:flex;align-items:center;gap:9px;margin:4px 0;font-size:13px;line-height:1.5;color:#555f73}.details-spinner{width:14px;height:14px;flex-shrink:0;border:2px solid #dddaf8;border-top-color:var(--indigo);border-radius:50%;animation:details-spin .8s linear infinite}.details-error p{font-size:13px;line-height:1.5;color:var(--red);margin:4px 0 10px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}@keyframes details-spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion: reduce){.details-chevron{transition:none}.details-spinner{animation:none}}.app-update-notice{position:fixed;z-index:20;bottom:calc(16px + env(safe-area-inset-bottom));left:50%;transform:translate(-50%);width:min(528px,calc(100% - 32px));display:flex;align-items:center;gap:12px;padding:14px 16px;border:1px solid #c7d2fe;border-radius:12px;background:#eef2ff;color:#312e81;box-shadow:0 4px 20px #1f24301a;font-size:13px;line-height:1.5}.app-update-notice button{flex-shrink:0;min-height:44px;padding:8px 12px;border:0;border-radius:8px;background:var(--indigo);color:#fff;font-size:13px;font-weight:600}.app-update-notice button:focus-visible{outline:2px solid #312e81;outline-offset:3px}