:root {
  --bg-0: #0b1220;
  --bg-1: #0f1828;
  --bg-2: #142036;
  --card: #16223a;
  --card-2: #1b2a45;
  --line: #243454;
  --text: #e6edf7;
  --text-dim: #8a99b3;
  --text-mute: #6a7896;
  --cyan: #2dd4d4;
  --red: #ef4444;
  --green: #22c55e;
  --amber: #f59e0b;
  --blue: #3b82f6;
  --super: #9f1239;
  --grad: linear-gradient(90deg, #2dd4d4 0%, #ef4444 100%);
  --shadow: 0 10px 30px rgba(0,0,0,0.45);
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  min-height: 100%;
  background: radial-gradient(1200px 800px at 50% -10%, #15233e 0%, var(--bg-0) 60%) fixed;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC",
               "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

.hidden { display: none !important; }

/* ===== Screens ===== */
.screen { display: none; min-height: 100vh; padding: 18px 16px 48px; }
.screen.active { display: block; }

#dashboard { max-width: 520px; margin: 0 auto; display: none; flex-direction: column; gap: 14px; }
#dashboard.active { display: flex; }

/* ===== Card ===== */
.card {
  position: relative;
  background: linear-gradient(180deg, var(--card) 0%, var(--card-2) 100%);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 18px;
}

/* ===== Auth ===== */
.auth-card {
  max-width: 420px;
  margin: 40px auto 0;
  padding: 22px 22px 18px;
  overflow: hidden;
}
.auth-card::before, .auth-card::after {
  content: ""; position: absolute; left: 0; right: 0; height: 2px;
  background: var(--grad); opacity: .95;
}
.auth-card::before { top: 0; }
.auth-card::after  { bottom: 0; }

.auth-header { text-align: center; padding: 8px 0 14px; border-bottom: 1px solid var(--line); }
.brand-title {
  margin: 0; font-size: 26px; letter-spacing: 2px; font-weight: 700;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand-title span { letter-spacing: 4px; }
.brand-tag { margin: 6px 0 0; color: var(--text-dim); letter-spacing: 6px; font-size: 14px; }

.auth-body { padding: 20px 4px 8px; display: grid; gap: 16px; }

.input-border-wrap { padding: 2px; border-radius: 12px; background: var(--grad); }
.serial-input {
  width: 100%; background: var(--card); border: none; outline: none; color: var(--text);
  text-align: center; font-size: 17px; letter-spacing: 4px; padding: 18px 14px; border-radius: 10px;
}
.serial-input::placeholder { color: var(--text-mute); letter-spacing: 6px; }

.auth-footer { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; }
.version { color: var(--text-mute); font-size: 13px; letter-spacing: 2px; }

.verify-status { text-align: center; color: var(--green); display: grid; gap: 6px; justify-items: center; animation: fadeIn .3s ease; }
.check-icon { width: 56px; height: 56px; color: var(--green); }
.verify-text { margin: 0; font-size: 14px; letter-spacing: 2px; }
.verify-expiry { margin: 0; font-size: 18px; letter-spacing: 3px; font-weight: 600; }

/* ===== Buttons ===== */
.btn {
  appearance: none; border: 0; width: 100%; padding: 16px 18px;
  font-size: 16px; letter-spacing: 4px; color: var(--text); border-radius: 10px;
  cursor: pointer; transition: transform .12s ease, opacity .2s ease, filter .2s ease;
  font-weight: 600;
}
.btn:active { transform: translateY(1px) scale(0.998); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-gradient {
  background: var(--grad); color: #0c1426;
  text-shadow: 0 1px 0 rgba(255,255,255,.25);
  box-shadow: 0 8px 24px rgba(45,212,212,.18), 0 8px 24px rgba(239,68,68,.18);
}
.btn-gradient:hover:not(:disabled) { filter: brightness(1.08); }

.btn-connect {
  background: linear-gradient(180deg, rgba(45,212,212,.15), rgba(45,212,212,.05));
  border: 1px solid var(--cyan); color: var(--cyan); letter-spacing: 6px;
  transition: all .2s ease;
}
.btn-connect:not(:disabled):hover { background: rgba(45,212,212,.25); }
.btn-connect.active-connected { border-color: var(--red); color: var(--red); background: rgba(239,68,68,.1); }

.btn-predict {
  background: linear-gradient(135deg, #d97706 0%, #f59e0b 50%, #d97706 100%);
  color: #0c1426; font-weight: 800; letter-spacing: 6px;
  box-shadow: 0 6px 20px rgba(245,158,11,.3);
}
.btn-predict:hover:not(:disabled) { filter: brightness(1.1); }

.btn-mini {
  width: auto; padding: 8px 14px; font-size: 13px; letter-spacing: 2px;
  background: transparent; border: 1px solid var(--line); color: var(--text-dim); border-radius: 8px;
}
.btn-mini:hover { color: var(--text); border-color: var(--cyan); }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(7,13,24,.88);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  backdrop-filter: blur(4px);
}
.modal-box {
  background: linear-gradient(180deg, var(--card) 0%, var(--card-2) 100%);
  border-radius: 20px; border: 1px solid var(--line);
  padding: 28px 24px; text-align: center; width: 100%; max-width: 360px;
  display: grid; gap: 16px;
}

.spin-arc-wrap { display: flex; justify-content: center; }
.spin-arc {
  width: 72px; height: 72px; position: relative; border-radius: 50%;
}
.spin-arc::before, .spin-arc::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 4px solid transparent;
}
.spin-arc::before {
  border-top-color: var(--cyan); border-right-color: rgba(45,212,212,.3);
  animation: spinCW 1s linear infinite;
}
.spin-arc::after {
  border-bottom-color: var(--red); border-left-color: rgba(239,68,68,.3);
  animation: spinCCW 1s linear infinite;
}
@keyframes spinCW  { to { transform: rotate(360deg); } }
@keyframes spinCCW { to { transform: rotate(-360deg); } }

.modal-title { margin: 0; font-size: 20px; letter-spacing: 2px; color: var(--text); }

.modal-info-box {
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; text-align: left;
}
.modal-info-label {
  font-size: 11px; color: var(--text-mute); letter-spacing: 4px; margin: 0 0 8px;
  text-align: center; border-bottom: 1px solid var(--line); padding-bottom: 6px;
}
.modal-info-text { font-size: 13px; color: var(--text-dim); line-height: 1.7; margin: 0 0 8px; }
.modal-info-text:last-child { margin-bottom: 0; }

.modal-progress-wrap { height: 4px; background: rgba(255,255,255,.08); border-radius: 2px; overflow: hidden; }
.modal-progress-bar {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--red), var(--amber));
  border-radius: 2px;
  transition: width .3s ease;
}
.modal-status-text { font-size: 13px; color: var(--text-mute); letter-spacing: 3px; margin: 0; }

/* ===== Toast ===== */
.toast {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 150;
  display: flex; align-items: center; justify-content: center;
  background: rgba(7,13,24,.6);
  backdrop-filter: blur(2px);
  animation: fadeIn .25s ease;
}
.toast-check { width: 80px; height: 80px; color: var(--green); }
.toast-text-wrap { display: grid; gap: 4px; }
.toast-title { font-size: 32px; font-weight: 800; letter-spacing: 4px; color: var(--text); }
.toast-subtitle { font-size: 14px; color: var(--text-dim); letter-spacing: 2px; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ===== Status bar ===== */
.status-bar { padding: 14px 16px; text-align: center; }
.status-row { display: flex; align-items: center; gap: 8px; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 4px rgba(239,68,68,.15); }
.status-dot.online { background: var(--green); box-shadow: 0 0 0 4px rgba(34,197,94,.18); animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100%{box-shadow:0 0 0 4px rgba(34,197,94,.18)}50%{box-shadow:0 0 0 8px rgba(34,197,94,.05)} }
.status-text { color: var(--text-dim); font-size: 13px; letter-spacing: 2px; }
.status-title {
  margin: 6px 0 4px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: 4px; font-size: 18px;
}
.status-meta { color: var(--text-dim); font-size: 12px; letter-spacing: 1px; }
.status-meta .sep { margin: 0 8px; color: var(--text-mute); }

/* ===== Panel ===== */
.panel { display: grid; gap: 14px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; }
.panel-title { margin: 0; font-size: 16px; letter-spacing: 4px; }

.field { display: grid; gap: 6px; }
.field-label { color: var(--text-dim); font-size: 13px; letter-spacing: 2px; }

.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.text-input, .select {
  width: 100%; background: var(--bg-2); border: 1px solid var(--line);
  color: var(--text); font-size: 15px; padding: 14px; border-radius: 10px;
  outline: none; transition: border-color .15s, box-shadow .15s;
}
.text-input:focus, .select:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(45,212,212,.18); }
.text-input:read-only { color: var(--text-dim); cursor: default; }

.select-wrap { position: relative; }
.select { appearance: none; padding-right: 38px; }
.select-wrap::after {
  content: ""; position: absolute; right: 16px; top: 50%;
  width: 8px; height: 8px;
  border-right: 2px solid var(--text-dim); border-bottom: 2px solid var(--text-dim);
  transform: translateY(-70%) rotate(45deg); pointer-events: none;
}

/* ===== Record grid ===== */
.record-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(6, 1fr);
  gap: 4px;
  background: var(--bg-2); border: 1px solid var(--line);
  padding: 8px; border-radius: 10px;
  min-height: 180px;
}
.record-cell {
  aspect-ratio: 1/1; border-radius: 6px;
  background: var(--bg-1); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: transparent;
  user-select: none;
}
.record-cell.c-P { background: rgba(59,130,246,.2); border-color: var(--blue); color: var(--blue); }
.record-cell.c-T { background: rgba(34,197,94,.2); border-color: var(--green); color: var(--green); }
.record-cell.c-B { background: rgba(239,68,68,.2); border-color: var(--red); color: var(--red); }
.record-cell.c-S { background: rgba(159,18,57,.3); border-color: #e11d48; color: #fb7185; }

/* ===== Result input buttons ===== */
.result-input-btns { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.result-btn {
  padding: 14px 0; border: none; border-radius: 10px;
  font-size: 15px; font-weight: 700; letter-spacing: 3px; cursor: pointer;
  transition: transform .1s, filter .15s;
  color: #fff;
}
.result-btn:active { transform: scale(0.96); }
.result-player { background: linear-gradient(180deg, #2563eb, #1d4ed8); }
.result-tie    { background: linear-gradient(180deg, #16a34a, #15803d); }
.result-banker { background: linear-gradient(180deg, #dc2626, #b91c1c); }
.result-super  { background: linear-gradient(180deg, #9f1239, #881337); }
.result-btn:hover { filter: brightness(1.12); }

/* ===== Prediction panel ===== */
.prediction-panel { padding-bottom: 18px; }

.pred-waiting { display: grid; gap: 14px; justify-items: center; padding: 20px 0; }
.pred-spinner {
  width: 56px; height: 56px; border-radius: 50%;
  border: 3px solid var(--line);
  border-top-color: var(--cyan); border-left-color: rgba(45,212,212,.4);
  animation: spinCW .9s linear infinite;
}
.pred-waiting-text { color: var(--text-dim); font-size: 14px; letter-spacing: 2px; margin: 0; }

.pred-report { display: grid; gap: 14px; }
.pred-report-title { margin: 0; font-size: 20px; font-weight: 700; letter-spacing: 4px; text-align: center; }
.pred-basis { margin: 0; font-size: 13px; color: var(--text-dim); letter-spacing: 2px; text-align: center; }
.pred-divider { height: 1px; background: linear-gradient(90deg, transparent, var(--line), transparent); }

.win-rate-row { display: grid; grid-template-columns: 1fr auto 1fr; gap: 10px; align-items: center; }
.win-rate-box {
  border-radius: 12px; padding: 14px 10px; text-align: center;
  display: grid; gap: 6px; border: 1px solid;
}
.player-box { border-color: var(--blue); background: rgba(59,130,246,.08); }
.banker-box { border-color: var(--red); background: rgba(239,68,68,.08); }
.win-rate-label { font-size: 12px; color: var(--text-dim); letter-spacing: 2px; }
.win-rate-pct { font-size: 28px; font-weight: 800; letter-spacing: 2px; }
.player-pct { color: var(--blue); }
.banker-pct { color: var(--red); }
.vs-circle {
  width: 44px; height: 44px; border-radius: 50%;
  border: 2px solid var(--line); background: var(--bg-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: var(--text-dim); letter-spacing: 1px;
}

.recommend-card {
  border-radius: 14px; overflow: hidden;
  background: linear-gradient(135deg, #d97706 0%, #f59e0b 40%, #fbbf24 60%, #d97706 100%);
  padding: 16px 18px;
}
.recommend-title { font-size: 20px; font-weight: 800; letter-spacing: 4px; color: #0c1426; margin-bottom: 14px; }
.recommend-rows { display: grid; gap: 10px; }
.recommend-row { display: flex; justify-content: space-between; font-size: 15px; color: #1a0a00; font-weight: 500; }
.rec-suggest { font-size: 18px; font-weight: 800; color: #0c1426; }

/* ===== Bet section ===== */
.bet-row { display: flex; align-items: center; gap: 10px; }
.this-round-pred { font-size: 18px; font-weight: 700; color: var(--amber); letter-spacing: 2px; }

.chip-row { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  flex: 1; min-width: 52px;
  padding: 10px 4px; border: none; border-radius: 50px;
  font-size: 13px; font-weight: 700; cursor: pointer;
  background: radial-gradient(circle at 35% 35%, #6b5c4e, #3d2e22);
  color: #f5c85a;
  border: 2px solid #7a6a58;
  box-shadow: 0 3px 8px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.1);
  transition: transform .1s, filter .15s;
  letter-spacing: 1px;
}
.chip:active { transform: scale(0.93); }
.chip:hover { filter: brightness(1.2); }

.toggle-row { display: flex; align-items: center; gap: 14px; }
.toggle-wrap { position: relative; display: inline-block; width: 52px; height: 28px; }
.toggle-input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0; background: var(--line); border-radius: 28px;
  cursor: pointer; transition: background .25s;
}
.toggle-slider::before {
  content: ""; position: absolute;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--text-dim); left: 3px; top: 3px;
  transition: transform .25s, background .25s;
}
.toggle-input:checked + .toggle-slider { background: var(--green); }
.toggle-input:checked + .toggle-slider::before { transform: translateX(24px); background: #fff; }

/* ===== Game history table ===== */
.history-table-wrap { overflow-x: auto; border-radius: 10px; border: 1px solid var(--line); }
.history-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.history-table th {
  background: var(--bg-2); color: var(--text-dim); font-size: 12px; letter-spacing: 1px;
  padding: 10px 8px; text-align: center; border-bottom: 1px solid var(--line); white-space: nowrap;
}
.history-table td { padding: 10px 8px; text-align: center; border-bottom: 1px solid rgba(36,52,84,.5); }
.history-total td { background: var(--bg-2); font-weight: 700; color: var(--text); }
.pnl-pos { color: var(--green); }
.pnl-neg { color: var(--red); }
.pnl-zero { color: var(--text-dim); }
.history-empty { text-align: center; color: var(--text-mute); font-size: 13px; letter-spacing: 2px; margin: 0; }

.badge {
  display: inline-block; padding: 2px 8px; border-radius: 4px;
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
}
.badge-P { background: rgba(59,130,246,.2); color: var(--blue); }
.badge-T { background: rgba(34,197,94,.2); color: var(--green); }
.badge-B { background: rgba(239,68,68,.2); color: var(--red); }
.badge-S { background: rgba(159,18,57,.25); color: #fb7185; }
.badge-na { color: var(--text-mute); }

@media (max-width: 380px) {
  .brand-title { font-size: 22px; }
  .btn { padding: 14px 16px; font-size: 15px; }
  .row-2 { grid-template-columns: 1fr; }
  .win-rate-pct { font-size: 22px; }
}