:root {
  --bg: #07080a;
  --bg2: #101218;
  --panel: #12151c;
  --panel2: #191d25;
  --file: #d8d2c4;
  --file2: #c8c1b1;
  --ink: #151515;
  --text: #eceff3;
  --muted: #9aa1aa;
  --silver: #c7ccd3;
  --silver2: #8b929d;
  --silver3: #59616d;
  --red: #8e1f2f;
  --red2: #5c121d;
  --red3: #b14655;
  --gold: #b5a36a;
  --ok: #bfc7ca;
  --shadow: rgba(0,0,0,.48);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}
* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); }
body {
  margin: 0;
  min-height: 100%;
  font-family: ui-rounded, "SF Pro Rounded", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, rgba(199,204,211,.13), transparent 28%),
    radial-gradient(circle at 90% 10%, rgba(142,31,47,.12), transparent 24%),
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px),
    var(--bg);
  background-size: auto, auto, 22px 22px, 22px 22px, auto;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.speakable {
  cursor: pointer;
  touch-action: manipulation;
}
.app-shell {
  width: min(100%, 560px);
  margin: 0 auto;
  min-height: 100vh;
  padding: 14px 14px calc(82px + var(--safe-bottom));
}
.top-header {
  position: sticky;
  top: 0;
  z-index: 5;
  margin: -14px -14px 12px;
  padding: calc(14px + env(safe-area-inset-top, 0px)) 14px 10px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  background: linear-gradient(180deg, rgba(7,8,10,.98), rgba(7,8,10,.86));
  border-bottom: 1px solid rgba(199,204,211,.18);
  backdrop-filter: blur(14px);
}
.brand-block { line-height: 1; }
.eyebrow {
  color: var(--silver);
  font-size: 11px;
  letter-spacing: .22em;
  font-weight: 800;
  text-transform: uppercase;
}
h1 {
  margin: 3px 0 3px;
  font-size: clamp(34px, 11vw, 54px);
  line-height: .92;
  letter-spacing: -.015em;
  text-transform: uppercase;
  color: var(--text);
  text-shadow: 0 1px 0 rgba(255,255,255,.08);
}
.brand-block p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.status-stamp {
  flex: 0 0 auto;
  margin-top: 4px;
  padding: 8px 9px;
  border: 1px solid rgba(199,204,211,.72);
  color: #f3e9ea;
  background: linear-gradient(135deg, var(--red), var(--red2));
  font-size: 10px;
  letter-spacing: .16em;
  line-height: 1.12;
  text-align: center;
  transform: rotate(2deg);
  box-shadow: 0 8px 20px var(--shadow);
}
.screen { animation: fadeIn .18s ease-out; }
@keyframes fadeIn { from { opacity: .72; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
.card {
  margin: 12px 0;
  padding: 16px;
  border: 1px solid rgba(199,204,211,.34);
  background: linear-gradient(180deg, rgba(25,29,37,.98), rgba(14,16,22,.98));
  box-shadow: 0 14px 34px rgba(0,0,0,.24);
}
.file-card {
  position: relative;
  overflow: hidden;
  color: var(--ink);
  background:
    linear-gradient(rgba(0,0,0,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,.025) 1px, transparent 1px),
    linear-gradient(180deg, var(--file), var(--file2));
  background-size: 18px 18px, 18px 18px, auto;
  border-color: rgba(199,204,211,.72);
}
.file-card:before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 10% 0%, rgba(255,255,255,.35), transparent 22%);
  opacity: .42;
}
.file-card > * { position: relative; z-index: 1; }
.card-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}
.kicker {
  color: var(--silver);
  font-size: 11px;
  letter-spacing: .16em;
  font-weight: 900;
  text-transform: uppercase;
}
.file-card .kicker { color: #5e6570; }
.title {
  margin: 4px 0 2px;
  font-size: 25px;
  line-height: 1.1;
  letter-spacing: .006em;
  text-transform: uppercase;
}
.file-card .title { color: #0f1012; }
.sub { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.file-card .sub { color: #4a4b4d; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  padding: 6px 8px;
  border: 1px solid rgba(199,204,211,.7);
  background: rgba(142,31,47,.95);
  color: #fff4f5;
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 900;
  box-shadow: 0 4px 10px rgba(0,0,0,.15);
}
.tag.silver {
  background: rgba(199,204,211,.12);
  color: var(--silver);
}
.file-card .tag.silver { color: #202329; border-color: rgba(32,35,41,.45); background: rgba(255,255,255,.24); }
.day-switcher {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 7px;
  margin: 10px 0 14px;
}
.day-btn {
  min-height: 42px;
  border: 1px solid rgba(199,204,211,.28);
  color: var(--silver);
  background: rgba(18,21,28,.92);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .08em;
}
.day-btn.is-active {
  border-color: rgba(199,204,211,.82);
  background: linear-gradient(135deg, rgba(199,204,211,.22), rgba(142,31,47,.32));
  color: var(--text);
}
.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
  margin-top: 12px;
}
.metric {
  padding: 12px 9px;
  border: 1px solid rgba(199,204,211,.24);
  background: rgba(0,0,0,.18);
}
.metric b {
  display: block;
  font-size: 24px;
  letter-spacing: -.05em;
  color: var(--text);
}
.metric span {
  display: block;
  margin-top: 4px;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.file-card .metric { border-color: rgba(21,21,21,.22); background: rgba(255,255,255,.22); }
.file-card .metric b { color: var(--ink); }
.file-card .metric span { color: #54585f; }
.case-lines {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}
.case-line {
  padding: 12px;
  border-left: 4px solid var(--red);
  background: rgba(255,255,255,.23);
  color: #121315;
  line-height: 1.55;
  font-size: 17px;
  font-weight: 720;
}
.translation-line {
  margin-top: 6px;
  color: #50545a;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.45;
}
.term-grid { display: grid; gap: 10px; }
.term-card {
  padding: 14px;
  border: 1px solid rgba(199,204,211,.26);
  background: rgba(255,255,255,.04);
}
.term-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: flex-start;
}
.term-word {
  margin: 0;
  color: var(--text);
  font-size: 22px;
  line-height: 1.16;
  letter-spacing: .008em;
}
.term-ja {
  margin: 3px 0 10px;
  color: var(--silver);
  font-weight: 780;
}
.term-meaning, .term-note {
  margin: 8px 0 0;
  color: #cfd4dc;
  font-size: 14px;
  line-height: 1.55;
}
.term-meaning-ja {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}
.term-note {
  color: var(--muted);
  border-top: 1px solid rgba(199,204,211,.16);
  padding-top: 8px;
}
.phrase-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 10px; }
.pill {
  display: inline-grid;
  gap: 2px;
  padding: 6px 8px;
  border: 1px solid rgba(199,204,211,.28);
  background: rgba(0,0,0,.2);
  color: var(--silver);
  font-size: 12px;
  line-height: 1.2;
}
.pill-en { color: var(--silver); }
.pill-ja { color: var(--muted); font-size: 11px; line-height: 1.25; }
.breakdown-list { display: grid; gap: 9px; }
.breakdown-item {
  display: grid;
  gap: 5px;
  padding: 11px;
  border: 1px solid rgba(17,17,17,.18);
  background: rgba(255,255,255,.24);
}
.breakdown-item b { color: #141414; }
.breakdown-item .ja { color: #3c3d41; font-weight: 720; }
.breakdown-item .note { color: #61646b; font-size: 12px; line-height: 1.4; }
.flow-wrap { display: grid; gap: 10px; margin-top: 12px; }
.flow-step {
  position: relative;
  padding: 14px;
  border: 1px solid rgba(199,204,211,.38);
  background: linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.025));
}
.flow-step:not(:last-child)::after {
  content: "↓";
  position: absolute;
  left: 50%;
  bottom: -19px;
  transform: translateX(-50%);
  color: var(--red3);
  font-weight: 900;
  font-size: 19px;
  z-index: 2;
}
.flow-main {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 8px;
  align-items: center;
}
.flow-box {
  min-height: 46px;
  display: grid;
  place-items: center;
  padding: 8px;
  border: 1px solid rgba(199,204,211,.42);
  color: var(--text);
  background: rgba(0,0,0,.24);
  text-align: center;
  font-weight: 820;
  line-height: 1.15;
  font-size: 13px;
}
.flow-action {
  color: var(--red3);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-align: center;
}
.flow-note { margin: 10px 0 0; color: var(--muted); font-size: 13px; line-height: 1.45; }
.drill-card {
  padding: 15px;
  border: 1px solid rgba(199,204,211,.36);
  background: rgba(18,21,28,.94);
}
.prompt {
  margin: 8px 0 12px;
  font-size: 17px;
  line-height: 1.5;
  font-weight: 780;
}
.choices { display: grid; gap: 8px; }
.choice-btn {
  width: 100%;
  padding: 12px;
  text-align: left;
  border: 1px solid rgba(199,204,211,.28);
  color: var(--text);
  background: rgba(255,255,255,.045);
  line-height: 1.35;
}
.choice-btn.is-correct {
  border-color: rgba(199,204,211,.78);
  background: rgba(199,204,211,.18);
}
.choice-btn.is-wrong {
  border-color: rgba(142,31,47,.9);
  background: rgba(142,31,47,.25);
}
.answer-note {
  margin-top: 10px;
  padding: 10px;
  border-left: 4px solid var(--silver);
  color: #d9dde4;
  background: rgba(255,255,255,.05);
  line-height: 1.45;
  font-size: 13px;
}
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.primary-btn, .ghost-btn, .danger-btn {
  border: 1px solid rgba(199,204,211,.4);
  padding: 11px 12px;
  font-weight: 900;
  letter-spacing: .08em;
  font-size: 11px;
  text-transform: uppercase;
}
.primary-btn { color: #f8f8f8; background: linear-gradient(135deg, var(--red), var(--red2)); }
.ghost-btn { color: var(--silver); background: rgba(255,255,255,.04); }
.danger-btn { color: #f2e9ea; background: rgba(142,31,47,.34); }
.review-empty { color: var(--muted); line-height: 1.6; }
.review-item {
  margin: 8px 0;
  padding: 12px;
  border: 1px solid rgba(199,204,211,.25);
  background: rgba(255,255,255,.04);
}
.review-item b { display: block; color: var(--text); font-size: 18px; }
.review-item span { display: block; color: var(--silver); margin: 3px 0; }
.review-item small { display: block; color: var(--muted); line-height: 1.4; }
.notice {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.55;
  border-top: 1px solid rgba(199,204,211,.18);
  margin-top: 14px;
  padding-top: 11px;
}
.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: min(100%, 560px);
  z-index: 20;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  padding: 8px 8px calc(8px + var(--safe-bottom));
  background: rgba(7,8,10,.94);
  border-top: 1px solid rgba(199,204,211,.22);
  backdrop-filter: blur(14px);
}
.nav-btn {
  min-height: 44px;
  border: 1px solid rgba(199,204,211,.18);
  color: var(--muted);
  background: rgba(255,255,255,.035);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .04em;
}
.nav-btn.is-active {
  color: var(--text);
  border-color: rgba(199,204,211,.64);
  background: linear-gradient(135deg, rgba(199,204,211,.18), rgba(142,31,47,.22));
}
@media (max-width: 380px) {
  .app-shell { padding-left: 10px; padding-right: 10px; }
  .top-header { margin-left: -10px; margin-right: -10px; padding-left: 10px; padding-right: 10px; }
  .flow-main { grid-template-columns: 1fr; }
  .flow-action::before, .flow-action::after { content: "—"; padding: 0 4px; color: var(--silver3); }
  .bottom-nav { grid-template-columns: repeat(3, 1fr); }
}





/* Stable 5-day horizontal selector: keep selected button in place */
.day-switcher{
  display:flex !important;
  grid-template-columns:none !important;
  flex-wrap:nowrap !important;
  gap:7px !important;
  margin:10px 0 14px !important;
  overflow-x:auto !important;
  overflow-y:hidden !important;
  -webkit-overflow-scrolling:touch !important;
  scroll-snap-type:none !important;
  scrollbar-width:none !important;
  scroll-behavior:auto !important;
}
.day-switcher::-webkit-scrollbar{
  display:none !important;
}
.day-btn{
  flex:0 0 calc((100% - 28px) / 5) !important;
  width:calc((100% - 28px) / 5) !important;
  min-width:calc((100% - 28px) / 5) !important;
  max-width:calc((100% - 28px) / 5) !important;
  box-sizing:border-box !important;
  scroll-snap-align:none !important;
}
.day-btn.is-active{
  box-sizing:border-box !important;
}