/* ── Gate (login) ── */
.gate-wrap { display: flex; align-items: center; justify-content: center; min-height: 80vh; padding: 24px; }
.gate-card {
  background: #fff; border-radius: var(--radius-xl); padding: 40px 32px;
  border: 1px solid var(--border); box-shadow: var(--shadow-md);
  width: 100%; max-width: 400px; text-align: center;
}
.gate-card h2 { font-size: var(--font-size-2xl); font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.gate-card p { font-size: var(--font-size-sm); color: var(--muted); margin-bottom: 24px; }
.form-group { margin-bottom: 16px; text-align: left; }
.form-group label { display: block; font-size: var(--font-size-sm); font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.form-input {
  width: 100%; padding: 10px 14px; font-size: var(--font-size-md); font-family: inherit;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: #fff; color: var(--ink); transition: var(--transition-fast); outline: none;
}
.form-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.1); }
.form-error { font-size: var(--font-size-xs); color: var(--error); margin-top: 4px; min-height: 18px; }

/* ── Main body ── */
.rc-body { max-width: 860px; margin: 0 auto; padding: 32px 16px 80px; }
.rc-section-title {
  font-size: var(--font-size-xl); font-weight: 700; color: var(--ink);
  margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--primary);
  display: inline-block;
}

/* ── Balance card ── */
.balance-card {
  background: linear-gradient(135deg, var(--primary) 0%, #7C3AED 100%);
  border-radius: var(--radius-xl); padding: 32px; color: #fff;
  margin-bottom: 32px; box-shadow: 0 8px 32px rgba(79,70,229,0.25);
  position: relative; overflow: hidden;
}
.balance-card::after {
  content: ''; position: absolute; top: -30px; right: -30px;
  width: 120px; height: 120px; background: rgba(255,255,255,0.08);
  border-radius: 50%; pointer-events: none;
}
.balance-card-label { font-size: var(--font-size-sm); opacity: 0.8; margin-bottom: 4px; }
.balance-card-total { font-size: 36px; font-weight: 700; line-height: 1.2; margin-bottom: 20px; }
.balance-card-total span { font-size: 18px; font-weight: 500; }
.balance-row {
  display: flex; gap: 16px; flex-wrap: wrap;
}
.balance-item {
  flex: 1; min-width: 120px; background: rgba(255,255,255,0.12);
  border-radius: var(--radius-md); padding: 14px 18px;
}
.balance-item-label { font-size: var(--font-size-xs); opacity: 0.75; margin-bottom: 2px; }
.balance-item-value { font-size: var(--font-size-xl); font-weight: 600; }

/* ── Packages grid ── */
.pkg-grid {
  display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 32px;
}
@media (min-width: 640px) { .pkg-grid { grid-template-columns: repeat(2, 1fr); } }
.pkg-card {
  background: #fff; border-radius: var(--radius-lg); padding: 24px;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; justify-content: space-between;
  transition: var(--transition-base);
}
.pkg-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); border-color: var(--primary-light); }
.pkg-name { font-size: var(--font-size-lg); font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.pkg-price { font-size: var(--font-size-2xl); font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.pkg-price-line { font-size: var(--font-size-xs); color: var(--muted); margin-bottom: 4px; }
.pkg-quota { font-size: var(--font-size-xs); color: var(--muted); line-height: 1.7; margin-bottom: 16px; }
.pkg-quota strong { color: var(--ink); }
.pkg-remaining {
  font-size: var(--font-size-xs); color: var(--success); background: rgba(34,197,94,0.08);
  padding: 6px 10px; border-radius: var(--radius-sm); margin-bottom: 12px;
  border: 1px solid rgba(34,197,94,0.15);
}
.btn-buy {
  display: inline-flex; align-items: center; justify-content: center;
  width: 100%; padding: 10px 20px; font-size: var(--font-size-md); font-weight: 600;
  border-radius: var(--radius-full); cursor: pointer; transition: var(--transition-fast);
  background: var(--gradient-primary); color: #fff; border: none;
  box-shadow: 0 4px 16px rgba(79,70,229,0.3);
}
.btn-buy:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(79,70,229,0.4); }
.btn-buy:active { transform: translateY(0); }
.btn-buy:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

/* ── Recharge section ── */
.recharge-card {
  background: #fff; border-radius: var(--radius-xl); padding: 32px;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
}
.preset-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 20px;
}
@media (max-width: 420px) { .preset-grid { grid-template-columns: repeat(2, 1fr); } }
.preset-btn {
  padding: 14px 0; font-size: var(--font-size-md); font-weight: 600;
  color: var(--ink); background: var(--bg-soft); border: 2px solid var(--border);
  border-radius: var(--radius-md); cursor: pointer; transition: var(--transition-fast);
  text-align: center;
}
.preset-btn:hover { border-color: var(--primary); color: var(--primary); background: rgba(79,70,229,0.04); }
.preset-btn.active { border-color: var(--primary); background: rgba(79,70,229,0.06); color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.1); }
.custom-amount-wrap { display: flex; align-items: center; gap: 8px; margin-bottom: 20px; }
.custom-amount-wrap label { font-size: var(--font-size-sm); font-weight: 600; color: var(--ink); white-space: nowrap; }
.custom-amount-wrap input {
  flex: 1; padding: 10px 14px; font-size: var(--font-size-md); font-family: inherit;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: #fff; color: var(--ink); outline: none; transition: var(--transition-fast);
  min-width: 0;
}
.custom-amount-wrap input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.1); }
.custom-amount-wrap .unit { font-size: var(--font-size-sm); color: var(--muted); }
.btn-pay {
  width: 100%; padding: 14px 24px; font-size: var(--font-size-md); font-weight: 600;
  border-radius: var(--radius-full); cursor: pointer; transition: var(--transition-fast);
  background: var(--gradient-accent); color: #fff; border: none;
  box-shadow: 0 4px 16px rgba(245,158,11,0.3);
}
.btn-pay:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.4); }
.btn-pay:active { transform: translateY(0); }
.btn-pay:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

/* ── Usage section ── */
.usage-table {
  width: 100%; border-collapse: collapse; font-size: var(--font-size-sm);
}
.usage-table th,
.usage-table td {
  padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border);
  color: var(--ink);
}
.usage-table th {
  font-weight: 600; color: var(--muted); font-size: var(--font-size-xs);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.usage-table tr:last-child td { border-bottom: none; }
.usage-table tr:hover td { background: var(--bg-soft); }

/* ── QR Modal ── */
.qr-overlay {
  position: fixed; inset: 0; background: rgba(15,23,42,0.55);
  display: none; align-items: center; justify-content: center;
  z-index: var(--z-modal); padding: 24px;
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.qr-overlay.open { display: flex; }
.qr-modal {
  background: #fff; border-radius: var(--radius-xl); padding: 36px 32px;
  max-width: 380px; width: 100%; text-align: center; position: relative;
  animation: scaleIn 0.25s ease; box-shadow: var(--shadow-xl);
}
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
.qr-close {
  position: absolute; top: 12px; right: 12px; width: 32px; height: 32px;
  border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center;
  color: var(--muted); transition: var(--transition-fast); background: transparent; cursor: pointer;
}
.qr-close:hover { background: var(--bg-soft); color: var(--ink); }
.qr-title { font-size: var(--font-size-lg); font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.qr-amount { font-size: var(--font-size-2xl); font-weight: 700; color: var(--primary); margin-bottom: 16px; }
.qr-box {
  display: flex; align-items: center; justify-content: center;
  width: 220px; height: 220px; margin: 0 auto 16px;
  background: #fff; border: 2px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; position: relative;
}
.qr-box img, .qr-box canvas { max-width: 100%; max-height: 100%; }
.qr-countdown { font-size: var(--font-size-sm); color: var(--muted); margin-bottom: 12px; }
.qr-countdown strong { color: var(--ink); }
.qr-status {
  font-size: var(--font-size-sm); padding: 10px 16px; border-radius: var(--radius-sm);
  background: var(--bg-soft); color: var(--muted); border: 1px solid var(--border);
  min-height: 20px;
}
.qr-status.waiting { color: var(--info); background: rgba(59,130,246,0.06); border-color: rgba(59,130,246,0.15); }
.qr-status.success { color: var(--success); background: rgba(34,197,94,0.06); border-color: rgba(34,197,94,0.15); }
.qr-status.expired { color: var(--error); background: rgba(239,68,68,0.06); border-color: rgba(239,68,68,0.15); }

/* ── Toast ── */
.toast {
  position: fixed; top: 20px; right: 20px; z-index: 9999;
  padding: 12px 20px; border-radius: var(--radius-sm);
  font-size: var(--font-size-sm); font-weight: 600; color: #fff;
  box-shadow: var(--shadow-lg); transform: translateX(120%);
  transition: transform 0.3s ease; max-width: 360px; word-break: break-word;
}
.toast.show { transform: translateX(0); }
.toast.success { background: var(--success); }
.toast.error { background: var(--error); }

/* ── Responsive ── */
@media (max-width: 480px) {
  .gate-card { padding: 32px 20px; }
  .balance-card { padding: 24px; }
  .balance-card-total { font-size: 28px; }
  .recharge-card { padding: 24px; }
}