:root {
  --bg: #eef7f1;
  --bg-soft: #f6fbf8;
  --panel: #ffffff;
  --panel-sub: #f3faf6;
  --line: #d8ebe0;
  --text: #1a2e24;
  --muted: #6b8578;
  --accent: #07c160;
  --accent-dim: #06ad56;
  --accent-soft: #e8f8ef;
  --warn: #c98a12;
  --warn-bg: #fff8e8;
  --danger: #e05252;
  --shadow: 0 8px 28px rgba(7, 120, 80, 0.08);
  --shadow-sm: 0 2px 12px rgba(7, 120, 80, 0.06);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(ellipse 90% 60% at 10% -5%, rgba(7, 193, 96, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse 70% 50% at 95% 10%, rgba(56, 189, 248, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(7, 193, 96, 0.1) 0%, transparent 55%),
    linear-gradient(165deg, #f4fbf7 0%, var(--bg) 45%, #e8f4ec 100%);
  background-attachment: fixed;
}
.hidden { display: none !important; }

/* Login */
#login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-box {
  width: min(400px, 100%);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 20px;
  padding: 32px 24px;
  box-shadow: var(--shadow);
}
.login-box h1 { margin: 0 0 8px; font-size: 1.4rem; color: var(--text); }
.login-box .sub { margin: 0 0 24px; color: var(--muted); font-size: 0.9rem; }

/* App shell */
#app-screen {
  min-height: 100vh;
  padding: 16px 16px 80px;
  max-width: 520px;
  margin: 0 auto;
}
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.page-header h1 { margin: 0; font-size: 1.25rem; color: var(--text); }
.page-header .user { color: var(--muted); font-size: 0.85rem; }

.view { display: none; }
.view.active { display: block; }

.card {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 18px;
  padding: 20px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
}

label {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 500;
}
input[type="text"],
input[type="number"],
input[type="password"],
input[type="url"],
select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--text);
  font-size: 1rem;
  outline: none;
  margin-bottom: 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(7, 193, 96, 0.15);
  background: #fff;
}
input[readonly] { opacity: 0.85; background: var(--panel-sub); }

.btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn:active { transform: scale(0.98); }
.btn.primary {
  width: 100%;
  background: linear-gradient(135deg, #09d469 0%, var(--accent) 55%, var(--accent-dim) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(7, 193, 96, 0.35);
}
.btn.primary:hover {
  background: linear-gradient(135deg, #0bc96a 0%, var(--accent-dim) 100%);
  box-shadow: 0 6px 18px rgba(7, 193, 96, 0.4);
}
.btn.primary:disabled { opacity: 0.55; cursor: not-allowed; box-shadow: none; }
.btn.secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
}
.btn.secondary:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.btn.danger {
  background: #fff5f5;
  color: var(--danger);
  border: 1px solid #f5d0d0;
  width: 100%;
  margin-top: 12px;
}
.btn-row {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}
.btn-row .btn { flex: 1; }

.hint {
  margin: 0 0 14px;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.5;
}
.hint code {
  background: var(--accent-soft);
  color: var(--accent-dim);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.8rem;
}
.status {
  margin-bottom: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
  background: var(--panel-sub);
}
.status.ready {
  color: var(--accent-dim);
  border-color: #b8e8cc;
  background: var(--accent-soft);
}
.status.need {
  color: var(--warn);
  border-color: #f0dfa8;
  background: var(--warn-bg);
}

.msg { margin-top: 10px; font-size: 0.88rem; white-space: pre-wrap; }
.msg.err { color: var(--danger); }
.msg.ok { color: var(--accent-dim); }

.file-row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
}
.file-row input[type="file"] {
  flex: 1;
  font-size: 0.82rem;
  color: var(--muted);
}
.badge {
  font-size: 0.75rem;
  padding: 4px 8px;
  border-radius: 999px;
  white-space: nowrap;
  border: 1px solid var(--line);
  color: var(--muted);
  background: #fff;
}
.badge.ok {
  color: var(--accent-dim);
  border-color: #b8e8cc;
  background: var(--accent-soft);
}

/* QR result */
.qr-result { text-align: center; margin-top: 16px; display: none; }
.qr-result.show { display: block; }
.qr-result img {
  width: 240px;
  height: 240px;
  background: #fff;
  border-radius: 14px;
  padding: 12px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
}
.qr-amount {
  font-size: 1.6rem;
  color: var(--accent);
  font-weight: 700;
  margin: 8px 0;
}
.qr-meta { font-size: 0.85rem; color: var(--muted); line-height: 1.6; }

.share-box {
  margin-top: 14px;
  text-align: left;
}
.share-box label {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 6px;
}
.share-row {
  display: flex;
  gap: 8px;
}
.share-row input {
  flex: 1;
  margin-bottom: 0;
  font-size: 0.82rem;
  padding: 10px 12px;
}
.share-row .btn {
  width: auto;
  padding: 10px 14px;
  white-space: nowrap;
}

/* Orders */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}
.stat-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 14px;
  padding: 12px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.stat-card .num {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
}
.stat-card .lbl {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 4px;
}
.order-list { display: flex; flex-direction: column; gap: 10px; }
.order-item {
  background: var(--panel-sub);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}
.order-item .top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.order-item .money {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
}
.order-item .time {
  font-size: 0.78rem;
  color: var(--muted);
}
.order-item .desc {
  font-size: 0.85rem;
  color: var(--text);
  margin-bottom: 4px;
}
.order-item .no {
  font-size: 0.75rem;
  color: var(--muted);
  word-break: break-all;
}
.empty {
  text-align: center;
  color: var(--muted);
  padding: 40px 20px;
  font-size: 0.9rem;
}

/* Bottom nav */
.bottom-nav {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 12px;
  width: min(488px, calc(100% - 24px));
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  display: flex;
  box-shadow: 0 8px 32px rgba(7, 120, 80, 0.12);
  z-index: 100;
  padding: 4px;
}
.nav-item {
  flex: 1;
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 10px 4px 8px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  border-radius: 14px;
  transition: background 0.2s, color 0.2s;
}
.nav-item .icon { font-size: 1.25rem; line-height: 1; }
.nav-item.active {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 600;
}

/* Modal */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(26, 46, 36, 0.35);
  backdrop-filter: blur(4px);
  display: none;
  place-items: center;
  padding: 20px;
  z-index: 200;
}
.modal-mask.show { display: grid; }
.modal {
  width: min(400px, 100%);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow);
}
.modal h2 { margin: 0 0 16px; font-size: 1.1rem; color: var(--text); }
.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}
.modal-actions .btn { flex: 1; }

.settings-section-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin: 0 0 12px;
  color: var(--text);
}

/* Accounts */
.account-list { display: flex; flex-direction: column; gap: 10px; }
.account-item {
  background: var(--panel-sub);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}
.account-item.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.account-item .top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.account-item .name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}
.account-item .tag {
  font-size: 0.72rem;
  color: var(--accent);
  background: #fff;
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 2px 8px;
  white-space: nowrap;
}
.account-item .meta {
  font-size: 0.78rem;
  color: var(--muted);
  word-break: break-all;
  margin-bottom: 10px;
}
.account-item .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.account-item .actions .btn {
  width: auto;
  padding: 8px 12px;
  font-size: 0.82rem;
  margin: 0;
}
select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236b8578' d='M1.4 0L6 4.6 10.6 0 12 1.4 6 7.4 0 1.4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}