:root {
  --bg: #0f172a;
  --card: #111827;
  --border: #1f2937;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #16a34a;
  --primary-700: #15803d;
  --danger: #ef4444;
  --success: #10b981;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
}

.app-header {
  padding: 16px;
  text-align: center;
}
.logo {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  display: inline-block;
  margin-bottom: 8px;
}
.brand {
  font-weight: 700;
  font-size: 22px;
}
.subtitle {
  color: var(--muted);
  font-size: 13px;
}

.container {
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
  padding: 12px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.35);
}
.card + .card { margin-top: 16px; }
.card-title {
  margin: 0 0 12px 0;
  font-size: 20px;
}

.form { display: grid; gap: 12px; }
.field { display: grid; gap: 6px; }
.field span { font-size: 13px; color: var(--muted); }
.field input {
  height: 44px;
  border-radius: 10px;
  background: #0b1220;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0 12px;
}
.field input::placeholder { color: #6b7280; }

.btn {
  height: 44px;
  border-radius: 10px;
  border: 0;
  background: #334155;
  color: var(--text);
  font-weight: 600;
}
.btn.primary { background: var(--primary); }
.btn.primary:active { background: var(--primary-700); }
.btn.success { background: var(--success); }
.btn.danger { background: var(--danger); }
.btn:disabled { opacity: 0.6; }

.inline {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.otp-input { text-align: center; letter-spacing: 2px; }

.divider {
  margin: 12px 0;
  display: grid;
  align-items: center;
  grid-template-columns: 1fr auto 1fr;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}
.divider::before, .divider::after { content: ""; height: 1px; background: var(--border); }

.row-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
}
.link {
  background: transparent;
  border: 0;
  color: #60a5fa;
  font-weight: 600;
}

.toast {
  position: sticky;
  top: 8px;
  margin-bottom: 12px;
  background: #0b1220;
  border: 1px solid var(--border);
  padding: 10px 12px;
  border-radius: 12px;
  display: none;
}
.toast.show { display: block; }

.hidden { display: none; }

.app-footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  padding: 16px 0 24px;
}

@media (max-width: 420px) {
  .container { padding: 8px; }
  .card { padding: 12px; }
}