:root {
  --bg: #050914;
  --panel: rgba(8, 19, 38, .74);
  --line: rgba(106, 181, 255, .18);
  --text: #f6f8ff;
  --muted: #9db3d3;
  --blue: #55adff;
  --green: #35ec7c;
  --red: #ff5877;
  --yellow: #ffd35d;
  --purple: #bd7aff;
  --shadow: 0 24px 70px rgba(0, 0, 0, .44);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; min-height: 100%; }
body {
  min-height: 100vh;
  font-family: Tahoma, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -10%, rgba(63, 128, 255, .28), transparent 34%),
    radial-gradient(circle at 5% 18%, rgba(53, 236, 124, .13), transparent 26%),
    radial-gradient(circle at 95% 84%, rgba(255, 88, 119, .11), transparent 26%),
    linear-gradient(135deg, #03050d, #071324 52%, #03050b);
  overflow-x: hidden;
  touch-action: manipulation;
}
button, input, select { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

.glass {
  background: linear-gradient(180deg, rgba(12, 24, 47, .84), rgba(4, 11, 24, .76));
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}
.shell {
  width: min(1120px, calc(100% - 20px));
  margin: 0 auto;
  min-height: 100vh;
  padding: 12px 0 calc(84px + var(--safe-area-bottom));
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 12px;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  position: sticky;
  top: 8px;
  z-index: 8;
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.logo {
  width: 48px; height: 48px; border-radius: 16px;
  display: grid; place-items: center;
  background: radial-gradient(circle at 30% 20%, rgba(85, 173, 255, .45), rgba(17, 36, 74, .5));
  border: 1px solid rgba(85,173,255,.25);
  font-size: 24px;
}
.brand h1 { margin: 0; font-size: clamp(19px, 4.8vw, 30px); line-height: 1.1; }
.brand p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.top-actions { display: flex; gap: 8px; }
.icon-btn, .mini-btn, .bottom-nav button {
  border-radius: 15px;
  color: var(--text);
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.08);
  min-height: 42px;
  padding: 10px 13px;
  font-weight: 800;
}
.icon-btn { width: 44px; padding: 0; font-size: 21px; }
.mini-btn.primary, .bottom-nav button:nth-child(2) {
  background: linear-gradient(135deg, #168fff, #004cff);
  border-color: rgba(85,173,255,.32);
  box-shadow: 0 10px 22px rgba(0,76,255,.22);
}

.home { display: grid; gap: 14px; align-content: start; }
.hero { padding: clamp(18px, 4vw, 34px); }
.kicker { display: inline-block; color: var(--green); font-size: 13px; font-weight: 900; margin-bottom: 8px; }
.hero h2 { margin: 0 0 10px; font-size: clamp(28px, 6vw, 54px); line-height: 1.12; }
.hero p, .shared-note p { color: var(--muted); line-height: 1.9; margin: 0; }
.mode-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.mode-card {
  text-align: right;
  min-height: 220px;
  padding: 18px;
  color: var(--text);
  display: grid;
  gap: 10px;
  align-content: start;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
.mode-card:hover { transform: translateY(-3px); border-color: rgba(85,173,255,.44); }
.mode-icon { width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; font-size: 30px; background: rgba(85,173,255,.12); border: 1px solid rgba(85,173,255,.18); }
.mode-card strong { font-size: 22px; }
.mode-card small { color: var(--muted); line-height: 1.7; }
.mode-card em { color: var(--green); font-style: normal; font-weight: 900; margin-top: auto; }
.shared-note { padding: 18px; }
.shared-note h3 { margin: 0 0 8px; }

.setup { display: grid; place-items: start center; }
.setup-card { width: min(720px, 100%); padding: 20px; display: grid; gap: 16px; }
.setup-card h2 { margin: 0 0 8px; font-size: 30px; }
.setup-card p { margin: 0; color: var(--muted); line-height: 1.8; }
.setup-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.field { display: grid; gap: 8px; color: var(--muted); }
.field input, .field select {
  width: 100%; border: 1px solid rgba(255,255,255,.1); border-radius: 16px; padding: 13px;
  background: rgba(0,0,0,.26); color: var(--text); outline: none;
}
.field select option { color: #111; }
.setup-actions { display: flex; justify-content: flex-end; gap: 10px; flex-wrap: wrap; }

.game { display: grid; gap: 10px; }
.stage-strip { padding: 14px; display: grid; grid-template-columns: 1fr 1.35fr; gap: 14px; align-items: center; }
.stage-strip strong { display: block; color: var(--blue); font-size: clamp(28px, 7vw, 46px); line-height: 1; }
.stage-strip small { color: var(--text); font-weight: 800; }
.progress-wrap { display: grid; gap: 9px; }
.progress-text { display: flex; justify-content: space-between; color: var(--muted); }
.progress-text b { color: var(--green); }
.progress-track { height: 12px; border-radius: 999px; background: rgba(0,0,0,.32); overflow: hidden; border: 1px solid rgba(255,255,255,.06); }
.progress-track div { height: 100%; width: 1%; border-radius: 999px; background: linear-gradient(90deg, var(--green), var(--blue)); box-shadow: 0 0 16px rgba(53,236,124,.5); }

.hud { display: grid; grid-template-columns: 1fr 1.1fr 1fr; gap: 10px; padding: 10px; }
.hud-card, .turn-card {
  border-radius: 18px; padding: 12px 10px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.06);
  text-align: center; display: grid; gap: 4px;
}
.hud-card.active { border-color: rgba(53,236,124,.45); box-shadow: 0 0 0 3px rgba(53,236,124,.08); }
.hud-card span, .turn-card span { color: var(--muted); font-size: 12px; }
.hud-card strong { font-size: 25px; color: var(--green); }
.hud-card small { color: var(--muted); }
.hud-card em { color: var(--red); font-style: normal; font-weight: 900; }
.turn-card strong { color: var(--yellow); font-size: 20px; }
.turn-card small { color: var(--muted); }

.board-panel { padding: 10px; min-height: 0; }
.board-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 10px; }
.board-toolbar span { display: block; font-weight: 900; }
.board-toolbar small { display: block; color: var(--muted); margin-top: 3px; }
.toolbar-actions { display: flex; gap: 8px; }
#flagMode.active { color: #08111a; background: linear-gradient(135deg, var(--yellow), #ff9f3f); }
.board-scroll { width: 100%; min-height: 330px; overflow: auto; overscroll-behavior: contain; border-radius: 18px; background: rgba(1, 7, 16, .42); border: 1px solid rgba(85, 173, 255, .13); padding: 10px; }
.board { --cols: 6; --cell: 46px; display: grid; grid-template-columns: repeat(var(--cols), var(--cell)); grid-auto-rows: var(--cell); gap: clamp(4px, 1.1vw, 7px); width: max-content; margin: auto; min-height: 100%; align-content: center; }
.board.empty { display: flex; align-items: center; justify-content: center; width: 100%; min-height: 295px; color: var(--muted); border: 1px dashed rgba(255,255,255,.12); border-radius: 16px; }
.cell {
  width: var(--cell); height: var(--cell); border: 1px solid rgba(115,173,255,.18); border-radius: clamp(8px, 1.5vw, 12px);
  background: linear-gradient(180deg, #1a5fa8, #0c3264); color: var(--text); box-shadow: inset 0 1px 0 rgba(255,255,255,.18), 0 7px 14px rgba(0,0,0,.22);
  display: grid; place-items: center; font-weight: 900; font-size: clamp(16px, 5vw, 22px); user-select: none; border: 0;
}
.cell.revealed { background: linear-gradient(180deg, #20344d, #142233); box-shadow: inset 0 0 0 1px rgba(255,255,255,.04); }
.cell.mine { background: radial-gradient(circle, rgba(255,77,110,.45), rgba(80,13,25,.78)); color: #ffbac4; animation: boom .36s ease; }
.cell.flagged { color: var(--yellow); }
.cell.n1 { color: var(--blue); }.cell.n2 { color: var(--green); }.cell.n3 { color: var(--red); }.cell.n4, .cell.n5, .cell.n6, .cell.n7, .cell.n8 { color: var(--purple); }
@keyframes boom { 0% { transform: scale(.86); } 50% { transform: scale(1.13); } 100% { transform: scale(1); } }

.bottom-nav { position: fixed; right: 10px; left: 10px; bottom: calc(10px + var(--safe-area-bottom)); width: min(1120px, calc(100% - 20px)); margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; padding: 8px; z-index: 9; }

.drawer, .modal { position: fixed; inset: 0; z-index: 20; }
.drawer { pointer-events: none; opacity: 0; transition: opacity .18s ease; }
.drawer.open { pointer-events: auto; opacity: 1; }
.drawer-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.55); }
.drawer-card { position: absolute; top: 0; bottom: 0; left: 0; width: min(430px, 92vw); border-radius: 0 24px 24px 0; padding: 18px; overflow: auto; transform: translateX(-105%); transition: transform .22s ease; }
.drawer.open .drawer-card { transform: translateX(0); }
.drawer-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.drawer-head h2 { margin: 0; font-size: 22px; }
.details-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 16px 0; }
.details-grid div { border-radius: 16px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.06); padding: 13px; }
.details-grid span { display: block; color: var(--muted); font-size: 12px; margin-bottom: 6px; }
.details-grid b { font-size: 18px; }
.tips, .log-box { margin-top: 12px; padding: 14px; border-radius: 18px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.06); color: var(--muted); line-height: 1.8; }
.tips h3, .log-box h3 { margin: 0 0 8px; color: var(--text); }
.tips ul { margin: 0; padding-right: 18px; }
#log div { padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,.06); }
#log div:last-child { border-bottom: 0; }
.modal { display: grid; place-items: center; background: rgba(0,0,0,.58); padding: 16px; }
.modal-card { width: min(430px, 100%); padding: 22px; text-align: center; }
.result-icon { font-size: 56px; }
.modal-card h2 { margin: 10px 0; }
.modal-card p { color: var(--muted); line-height: 1.8; }
.modal-actions { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; }
.toast { position: fixed; right: 14px; bottom: calc(88px + var(--safe-area-bottom)); max-width: min(420px, calc(100% - 28px)); padding: 13px 16px; border-radius: 16px; background: rgba(5, 7, 13, .94); border: 1px solid var(--line); box-shadow: var(--shadow); color: var(--text); z-index: 30; }

@media (min-width: 1100px) { .board { --cell: 42px; } }
@media (max-width: 980px) { .mode-grid { grid-template-columns: repeat(2, 1fr); } .stage-strip { grid-template-columns: 1fr; } }
@media (max-width: 680px) {
  .shell { width: min(100%, calc(100% - 14px)); padding-top: 8px; }
  .topbar { top: 6px; }
  .mode-grid { grid-template-columns: 1fr; }
  .mode-card { min-height: 168px; }
  .setup-grid { grid-template-columns: 1fr; }
  .hud { grid-template-columns: 1fr 1.1fr 1fr; gap: 7px; padding: 7px; }
  .hud-card, .turn-card { padding: 10px 6px; }
  .hud-card strong { font-size: 20px; }
  .turn-card strong { font-size: 17px; }
  .board-toolbar { align-items: start; flex-direction: column; }
  .toolbar-actions { width: 100%; }
  .toolbar-actions .mini-btn { flex: 1; }
  .board { --cell: 38px; }
}
@media (max-width: 390px) { .board { --cell: 35px; } .brand p { display: none; } }