:root {
  --bg: #0b1220;
  --card: #131f35;
  --muted-card: #1a2b4b;
  --text: #e9eefc;
  --muted: #96a7cc;
  --border: #27406f;
  --accent: #4f6ec5;
  --accent-2: #6d87da;
  --topbar-bg: rgba(11, 18, 32, 0.88);
  --body-gradient: radial-gradient(1200px 800px at 15% -5%, #243f75 0%, var(--bg) 45%);
  --table-head-bg: #132544;
  --form-bg: rgba(13, 25, 45, .8);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background: var(--body-gradient);
  color: var(--text);
}
.light-theme {
  --bg: #f2f6ff;
  --card: #ffffff;
  --muted-card: #e9efff;
  --text: #1a2742;
  --muted: #566b93;
  --border: #c7d5f5;
  --accent: #2f5fd2;
  --accent-2: #4e79e0;
  --topbar-bg: rgba(255, 255, 255, 0.92);
  --body-gradient: radial-gradient(1200px 800px at 15% -5%, #d7e4ff 0%, var(--bg) 50%);
  --table-head-bg: #eef3ff;
  --form-bg: #f8faff;
}
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  background: var(--topbar-bg); backdrop-filter: blur(8px);
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo { width: 150px; height: auto; object-fit: contain; }
.logo { cursor: pointer; user-select: none; }
h1 { margin: 0; font-size: 24px; }
h2, h3 { margin: 0 0 12px; }
#metaInfo { margin: 4px 0 0; color: var(--muted); }

.layout { max-width: 1200px; margin: 20px auto 32px; padding: 0 16px; display: grid; gap: 14px; }
.card { background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01)); border: 1px solid var(--border); border-radius: 14px; padding: 14px; }
.auth-screen {
  min-height: calc(100vh - 120px);
  display: grid;
  place-items: center;
  padding: 20px 16px;
}
.auth-card {
  width: min(420px, 100%);
  display: grid;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  padding: 18px;
}
.auth-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.auth-switch button.active {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-color: var(--accent-2);
}
.remember-row {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: 14px;
}
.remember-row input {
  width: 16px;
  height: 16px;
}
.auth-error {
  color: #ff9ea0;
  font-size: 13px;
}
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tab-btn, .currency-btn, button { border: 1px solid var(--border); background: var(--muted-card); color: var(--text); border-radius: 10px; padding: 10px 14px; cursor: pointer; }
.tab-btn.active, .currency-btn.active { background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-color: var(--accent-2); }
.toolbar { display: flex; gap: 8px; }

.filters { display: grid; grid-template-columns: repeat(3, minmax(220px, 1fr)); gap: 10px; }
label { display: grid; gap: 6px; color: var(--muted); font-size: 14px; }
input, select, textarea { width: 100%; border: 1px solid var(--border); border-radius: 10px; background: var(--card); color: var(--text); padding: 10px; }
.details { margin: 0; display: grid; grid-template-columns: 220px 1fr; gap: 8px 12px; }
.details dd { margin: 0; font-weight: 600; }
.muted { color: var(--muted); }
.hidden { display: none !important; }

.options { display: grid; grid-template-columns: repeat(2, minmax(260px, 1fr)); gap: 8px; }
.option-item {
  display: grid;
  grid-template-columns: 20px 1fr;
  align-items: center;
  column-gap: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13px;
  text-align: left;
  min-height: 42px;
}
.option-item input[type="checkbox"] {
  width: 14px;
  height: 14px;
  margin: 0;
  justify-self: start;
  align-self: center;
}
.option-text {
  display: block;
  text-align: left;
  line-height: 1.25;
}
.total { margin-top: 12px; font-size: 24px; }
.total strong { color: #8db1ff; }

.stage-guide-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}
.guide-tab {
  border: 1px solid var(--border);
  background: var(--muted-card);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  min-height: 40px;
  font-weight: 600;
  width: 100%;
}
.guide-tab.active {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-color: var(--accent-2);
}
.stage-guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 8px;
}
.guide-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  padding: 10px;
}
.guide-icon {
  width: 20px;
  text-align: center;
  font-size: 16px;
  line-height: 1.2;
}
.guide-text {
  font-size: 13px;
  line-height: 1.35;
}
.stage-guide-note {
  margin-top: 10px;
  font-size: 12px;
}

.admin-grid { display: grid; grid-template-columns: repeat(2, minmax(280px, 1fr)); gap: 12px; }
.form-card { border: 1px solid var(--border); border-radius: 10px; padding: 10px; background: var(--form-bg); }
.actions { display: flex; gap: 8px; margin-top: 8px; }
.table-wrap { margin-top: 12px; overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
table { width: 100%; min-width: 840px; border-collapse: collapse; }
th, td { border-bottom: 1px solid var(--border); padding: 8px; text-align: left; font-size: 13px; }
th { background: var(--table-head-bg); }

@media (max-width: 900px) {
  .topbar {
    padding: 10px 12px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .brand {
    gap: 10px;
    align-items: center;
  }
  .brand > div {
    min-width: 0;
  }
  .toolbar {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }
  .currency-btn {
    padding: 8px 8px;
    min-height: 40px;
    font-size: 12px;
    letter-spacing: 0.2px;
  }
  h1 {
    font-size: 18px;
    line-height: 1.15;
    word-break: break-word;
  }

  .tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    gap: 8px;
    padding-bottom: 2px;
  }
  .tabs .tab-btn {
    flex: 0 0 auto;
    white-space: nowrap;
    min-height: 40px;
    padding: 8px 12px;
    font-size: 12px;
  }

  .filters, .admin-grid { grid-template-columns: 1fr; }
  .details { grid-template-columns: 1fr; }
  .options { grid-template-columns: 1fr; }
  .stage-guide-grid { grid-template-columns: 1fr; }
  .logo { width: 96px; }

  .auth-screen {
    min-height: auto;
    display: block;
    padding: 12px;
  }
  .auth-card {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    padding: 12px;
    gap: 8px;
  }
  .auth-card h2 {
    margin-bottom: 6px;
    font-size: 18px;
    line-height: 1.2;
  }
  .auth-card .muted {
    margin: 0 0 4px;
    font-size: 13px;
  }
  .auth-card label {
    gap: 4px;
    font-size: 13px;
  }
  .auth-card input,
  .auth-card button {
    min-height: 38px;
    padding: 8px 10px;
  }
  .remember-row {
    font-size: 13px;
  }
}