:root {
  --bg: #f5f7fb;
  --surface: rgba(255,255,255,0.92);
  --surface-strong: #ffffff;
  --surface-soft: #f8fafc;
  --line: #e4e8f1;
  --text: #101828;
  --muted: #667085;
  --primary: #4f46e5;
  --primary-soft: #eef2ff;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --shadow: 0 24px 48px rgba(15, 23, 42, 0.08);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max: 1240px;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(79,70,229,.12), transparent 28%),
    radial-gradient(circle at top left, rgba(14,165,233,.10), transparent 24%),
    linear-gradient(180deg, #f8faff 0%, #f4f6fb 100%);
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
.app-shell { max-width: var(--max); margin: 0 auto; padding: 18px 18px 96px; }
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 14px 16px; border: 1px solid rgba(228,232,241,.9); border-radius: 24px;
  background: rgba(255,255,255,.84); backdrop-filter: blur(14px); box-shadow: 0 16px 36px rgba(15,23,42,.06); position: sticky; top: 10px; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 48px; height: 48px; border-radius: 16px; background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  color: #fff; display: grid; place-items: center; font-size: 20px; font-weight: 800; box-shadow: 0 16px 28px rgba(79,70,229,.28);
}
.brand h1 { margin: 0; font-size: 18px; }
.brand p { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.nav-row, .action-row, .hero-actions, .quick-actions, .status-row, .button-row, .subnav, .pill-row { display: flex; gap: 10px; flex-wrap: wrap; }
.pill, .nav-pill, .ghost-button, .small-button, .status-chip, .seg-button {
  border: 1px solid var(--line); background: rgba(255,255,255,.84); color: var(--text); border-radius: 16px; padding: 11px 14px; transition: .18s ease;
}
.nav-pill.active, .seg-button.active, .pill.active { background: var(--text); color: #fff; border-color: var(--text); box-shadow: 0 14px 26px rgba(16,24,40,.12); }
.primary-button {
  border: none; border-radius: 18px; padding: 14px 18px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%); box-shadow: 0 16px 28px rgba(79,70,229,.28);
}
.primary-button:hover, .ghost-button:hover, .small-button:hover, .nav-pill:hover, .seg-button:hover, .flashcard:hover { transform: translateY(-1px); }
.surface {
  background: var(--surface); border: 1px solid rgba(228,232,241,.92); border-radius: var(--radius-xl); box-shadow: var(--shadow);
}
.page-grid { display: grid; gap: 20px; }
.home-grid { grid-template-columns: 1.2fr .8fr; }
.content-grid { grid-template-columns: 1fr; }
.hero { padding: 28px; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; width: 260px; height: 260px; right: -80px; bottom: -90px; background: radial-gradient(circle, rgba(79,70,229,.18) 0%, transparent 66%); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); font-size: 13px; font-weight: 800; }
.hero h2 { margin: 16px 0 10px; font-size: clamp(30px, 5vw, 54px); line-height: 1.02; }
.hero p { margin: 0; color: var(--muted); max-width: 720px; font-size: 16px; line-height: 1.7; }
.hero-stats { margin-top: 22px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.metric { padding: 16px; border-radius: 20px; border: 1px solid var(--line); background: rgba(255,255,255,.72); }
.metric-label { color: var(--muted); font-size: 13px; }
.metric-value { margin-top: 8px; font-weight: 800; font-size: 28px; }
.panel, .section { padding: 22px; }
.section h3, .panel h3 { margin: 0 0 8px; font-size: 23px; }
.section p, .panel p { margin: 0; color: var(--muted); line-height: 1.6; }
.section-stack { display: grid; gap: 20px; margin-top: 20px; }
.selector-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 18px; }
.field { display: grid; gap: 8px; }
.field label { font-size: 14px; color: var(--muted); font-weight: 700; }
.input, .select, .textarea {
  min-height: 52px; border-radius: 18px; border: 1px solid var(--line); background: #fff; padding: 14px 16px; outline: none;
}
.textarea { min-height: 110px; resize: vertical; }
.input:focus, .select:focus, .textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(79,70,229,.12); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.notice { padding: 14px 16px; border-radius: 18px; border: 1px solid rgba(79,70,229,.18); background: rgba(79,70,229,.08); color: var(--primary); }
.inline-summary { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; padding: 16px 18px; border-radius: 20px; background: var(--surface-soft); border: 1px solid var(--line); margin-top: 18px; }
.inline-summary strong { font-size: 18px; }
.study-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 20px; }
.flash-wrap { padding: 24px; }
.flashcard {
  min-height: 380px; border: none; width: 100%; text-align: left; border-radius: 32px; padding: 28px;
  background: radial-gradient(circle at top right, rgba(255,255,255,.16), transparent 30%), linear-gradient(145deg, #1d4ed8 0%, #4f46e5 45%, #7c3aed 100%);
  color: #fff; display: flex; flex-direction: column; justify-content: space-between; box-shadow: 0 30px 56px rgba(79,70,229,.28);
}
.flash-meta, .flash-footer { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: center; }
.flash-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.16); font-size: 13px; font-weight: 700; }
.flash-word { margin: 18px 0 6px; font-size: clamp(34px, 6vw, 64px); font-weight: 800; line-height: 1.03; }
.flash-support { font-size: 18px; line-height: 1.7; opacity: .96; }
.flash-note { margin-top: 18px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.18); font-size: 15px; line-height: 1.75; }
.card-actions { margin-top: 18px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.card-actions button { width: 100%; }
.card-actions .success { background: rgba(22,163,74,.12); color: #106c31; border-color: rgba(22,163,74,.22); }
.card-actions .warning { background: rgba(217,119,6,.12); color: #9a5808; border-color: rgba(217,119,6,.22); }
.card-actions .danger { background: rgba(220,38,38,.10); color: #991b1b; border-color: rgba(220,38,38,.2); }
.stack { display: grid; gap: 14px; }
.info-box { padding: 18px; border-radius: 22px; border: 1px solid var(--line); background: var(--surface-soft); }
.info-box h4 { margin: 0 0 10px; font-size: 16px; }
.info-box ul { padding-left: 18px; margin: 0; color: var(--muted); line-height: 1.6; }
.queue-list, .word-list, .result-list { display: grid; gap: 12px; }
.queue-item, .word-item, .result-item { padding: 14px; border-radius: 18px; background: var(--surface-soft); border: 1px solid var(--line); }
.queue-item strong, .word-item strong, .result-item strong { font-size: 16px; }
.list-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.word-item { display: grid; gap: 10px; }
.word-row { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.word-sub { color: var(--muted); line-height: 1.55; }
.words-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 20px; }
.results-header { display: flex; justify-content: space-between; gap: 12px; align-items: center; flex-wrap: wrap; }
.lang-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 12px; }
.lang-cell { padding: 12px; border-radius: 16px; border: 1px solid var(--line); background: #fff; }
.lang-cell span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.install-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 20px; }
.install-card { padding: 24px; }
.install-step { padding: 14px 0; border-bottom: 1px dashed var(--line); }
.install-step:last-child { border-bottom: none; }
.install-step strong { display: block; margin-bottom: 6px; }
.footer-note { text-align: center; margin-top: 24px; color: var(--muted); font-size: 14px; }
.mobile-tabbar { display: none; }
.status-chip.good { color: #0f8a4d; background: rgba(22,163,74,.10); border-color: rgba(22,163,74,.18); }
.status-chip.warn { color: #9a5808; background: rgba(217,119,6,.10); border-color: rgba(217,119,6,.18); }
.status-chip.bad { color: #991b1b; background: rgba(220,38,38,.10); border-color: rgba(220,38,38,.18); }
@media (max-width: 1100px) {
  .home-grid, .study-grid, .words-grid, .install-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .app-shell { padding: 14px 14px 96px; }
  .topbar { align-items: flex-start; }
  .desktop-nav { display: none; }
  .hero, .panel, .section, .flash-wrap, .install-card { padding: 18px; }
  .hero-stats, .selector-grid, .list-grid, .lang-grid, .card-actions { grid-template-columns: 1fr; }
  .flashcard { min-height: 320px; padding: 22px; }
  .mobile-tabbar {
    position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 24; display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px;
    padding: 10px; border: 1px solid rgba(228,232,241,.9); border-radius: 22px; background: rgba(255,255,255,.96); backdrop-filter: blur(14px); box-shadow: 0 20px 42px rgba(15,23,42,.14);
  }
  .mobile-tabbar .nav-pill { padding: 10px 6px; font-size: 12px; }
}


.flag-actions { align-items: center; }
.flag-pill {
  width: 48px; height: 48px; border-radius: 16px; border: 1px solid var(--line); background: rgba(255,255,255,.9);
  display: grid; place-items: center; font-size: 24px; line-height: 1; transition: .18s ease;
}
.flag-pill.active { background: var(--text); border-color: var(--text); box-shadow: 0 14px 26px rgba(16,24,40,.12); transform: translateY(-1px); }
.compact-brand h1 { font-size: 17px; }
.compact-home-grid { grid-template-columns: minmax(0, 860px); justify-content: center; }
.compact-home-card { padding: 24px; display: grid; gap: 20px; }
.compact-home-head {
  display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; flex-wrap: wrap;
}
.home-flags { margin-top: 8px; }
.compact-status-row { display: flex; gap: 10px; flex-wrap: wrap; }
.compact-selectors {
  display: grid; grid-template-columns: 1fr minmax(160px, .7fr) 1fr 1fr; gap: 14px; align-items: end;
}
.compact-arrow-field { min-width: 0; }
.direction-pill {
  min-height: 52px; display: flex; align-items: center; justify-content: center; gap: 10px; padding: 0 16px;
  border-radius: 18px; border: 1px solid var(--line); background: var(--surface-soft); font-weight: 700;
}
.direction-pill span { color: var(--primary); font-size: 20px; }
.level-pills { display: flex; gap: 10px; flex-wrap: wrap; }
.level-pills .seg-button { min-width: 68px; min-height: 52px; font-weight: 800; }
.compact-home-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.compact-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.mini-metric {
  padding: 16px; border-radius: 18px; border: 1px solid var(--line); background: var(--surface-soft);
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.mini-metric span { color: var(--muted); font-size: 14px; }
.mini-metric strong { font-size: 24px; }
.study-minimal-stack { display: grid; gap: 18px; }
.study-toolbar { padding: 18px 20px; display: grid; gap: 16px; }
.study-compact-selectors { grid-template-columns: 1fr minmax(160px, .7fr) 1fr 1fr; }
.study-status-row { display: flex; gap: 10px; flex-wrap: wrap; }
.study-solo-card { max-width: 920px; margin: 0 auto; width: 100%; }
.compact-card-actions { grid-template-columns: repeat(3, 1fr); }
.compact-empty-state { max-width: 680px; margin: 0 auto; }

@media (max-width: 1100px) {
  .compact-selectors, .study-compact-selectors { grid-template-columns: 1fr 1fr; }
  .compact-arrow-field, .compact-level-field { grid-column: span 1; }
}
@media (max-width: 760px) {
  .flag-pill { width: 44px; height: 44px; font-size: 22px; }
  .compact-home-card, .study-toolbar { padding: 18px; }
  .compact-selectors, .study-compact-selectors, .compact-metrics, .compact-card-actions { grid-template-columns: 1fr; }
  .compact-home-head { align-items: stretch; }
  .compact-home-actions { display: grid; grid-template-columns: 1fr; }
  .direction-pill { justify-content: flex-start; }
}


.minimal-home-grid{grid-template-columns:minmax(0,760px);justify-content:center}
.minimal-home-card{padding:22px;min-height:260px;display:flex;flex-direction:column;justify-content:center;gap:28px}
.home-mini-header{display:flex;justify-content:center}
.home-shortcuts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.home-shortcut{border:1px solid var(--line);background:var(--surface-2);border-radius:22px;padding:22px 18px;font-size:1.05rem;font-weight:700;color:var(--text);cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.home-shortcut:hover{transform:translateY(-1px);box-shadow:0 18px 40px rgba(15,23,42,.08);border-color:rgba(79,70,229,.26)}
.home-shortcut.primary{background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;border-color:transparent;box-shadow:0 20px 45px rgba(79,70,229,.22)}
.compact-section-head{padding:18px 22px}
.compact-import-row{justify-content:flex-start}
@media (max-width: 720px){
  .minimal-home-card{min-height:220px;padding:18px}
  .home-shortcuts{grid-template-columns:1fr}
}


/* ===== LexiLift v4 UI patch ===== */
.home-focus-card{max-width:820px;margin:0 auto;padding:24px;display:grid;gap:18px}
.home-focus-grid{grid-template-columns:1fr minmax(150px,.72fr) 1fr 1fr;align-items:end}
.home-start-row{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.home-primary-button{min-height:56px;padding:0 24px;font-size:16px;font-weight:800;box-shadow:0 14px 34px rgba(79,70,229,.18)}
.home-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.home-link{border:1px solid var(--line);background:var(--surface-soft);border-radius:18px;padding:16px 18px;font-size:15px;font-weight:700;color:var(--text);cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}
.home-link:hover{transform:translateY(-1px);box-shadow:0 16px 36px rgba(15,23,42,.08);border-color:rgba(79,70,229,.24)}
.study-mode-row{display:flex;gap:10px;flex-wrap:wrap}
.flash-helper-inline{margin-top:10px;font-size:13px;line-height:1.5;opacity:.82}
.progress-toolbar{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.progress-section-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
@media (max-width:1100px){.home-focus-grid{grid-template-columns:1fr 1fr}}
@media (max-width:760px){.home-focus-card{padding:18px}.home-focus-grid,.home-links{grid-template-columns:1fr}.home-primary-button{width:100%}.home-start-row{align-items:stretch}}
/* ===== end v4 patch ===== */