:root {
  --fg: #1a1a1a;
  --muted: #6b7280;
  --accent: #0b6e4f;
  --accent-2: #0a5c43;
  --border: #e5e7eb;
  --card: #ffffff;
  --bg: #f6f7f9;
  --danger: #b91c1c;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 0.8em; }
.error { color: var(--danger); font-size: 0.9em; margin: 8px 0; }

/* Login */
.view { max-width: 640px; margin: 0 auto; padding: 16px; padding-top: env(safe-area-inset-top); }
#login-view { display: flex; min-height: 100vh; align-items: center; justify-content: center; }
.login-card { background: var(--card); padding: 32px 24px; border-radius: 16px; width: 100%; text-align: center; box-shadow: 0 1px 3px rgba(0,0,0,0.08); }
.login-card h1 { margin: 0 0 4px; font-size: 1.5em; color: var(--accent); }

/* Header */
.app-header { display: flex; justify-content: space-between; align-items: flex-start; padding-bottom: 8px; }
.app-title h1 { margin: 0; font-size: 1.4em; color: var(--accent); }
.header-actions { display: flex; gap: 4px; }

button {
  font-size: 1em; padding: 12px 16px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--card); color: var(--fg); cursor: pointer; font-family: inherit;
}
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.primary:active { background: var(--accent-2); }
button.secondary { background: var(--card); }
button.small { padding: 6px 10px; font-size: 0.85em; }
.icon-btn { padding: 6px 10px; font-size: 1.1em; background: transparent; border: none; }

/* FX banner */
.fx-banner {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  background: #fff7e6; border: 1px solid #f0d9a6; border-radius: 12px; padding: 10px 12px; margin-bottom: 12px;
}

/* Month nav */
.month-nav { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.month-nav select { flex: 1; font-size: 1.1em; padding: 10px; border-radius: 12px; border: 1px solid var(--border); background: var(--card); }

/* Actions */
.actions-row { display: flex; gap: 8px; margin-bottom: 16px; }
.actions-row button { flex: 1; }

/* Expense list */
.expense-list { display: flex; flex-direction: column; gap: 10px; }
.expense-card { background: var(--card); border-radius: 14px; padding: 14px; box-shadow: 0 1px 2px rgba(0,0,0,0.05); }
.expense-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.expense-nr { color: var(--muted); font-size: 0.85em; }
.expense-date { color: var(--muted); font-size: 0.9em; }
.expense-desc { margin: 4px 0 6px; font-size: 0.98em; }
.expense-amounts { display: flex; justify-content: space-between; align-items: baseline; font-size: 0.92em; }
.expense-amounts .cny { color: var(--fg); }
.expense-amounts .eur { color: var(--muted); }
.expense-amounts .rate { color: var(--muted); font-size: 0.85em; }
.expense-actions { margin-top: 8px; display: flex; gap: 6px; }
.expense-actions button { padding: 6px 10px; font-size: 0.82em; }
.photo-thumbs { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.photo-thumbs img { width: 64px; height: 64px; object-fit: cover; border-radius: 8px; border: 1px solid var(--border); }

/* Modals */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.4); display: flex; align-items: flex-end; justify-content: center; z-index: 50; }
@media (min-width: 640px) { .modal { align-items: center; } }
.modal-card { background: var(--bg); width: 100%; max-width: 560px; padding: 20px; border-radius: 20px 20px 0 0; max-height: 90vh; overflow-y: auto; }
@media (min-width: 640px) { .modal-card { border-radius: 20px; } }
.modal-card h2 { margin: 0 0 12px; color: var(--accent); }
.modal-card h3 { margin: 16px 0 8px; }
.modal-card label { display: block; font-size: 0.85em; color: var(--muted); margin: 10px 0 4px; }
.modal-card input[type=text], .modal-card input[type=date], .modal-card input[type=password], .modal-card input {
  width: 100%; padding: 11px; border-radius: 10px; border: 1px solid var(--border); font-size: 1em; background: var(--card); font-family: inherit;
}
.modal-actions { display: flex; gap: 8px; margin-top: 16px; }
.modal-actions button { flex: 1; }
.photo-preview { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.photo-preview img { width: 72px; height: 72px; object-fit: cover; border-radius: 8px; }
hr { border: none; border-top: 1px solid var(--border); margin: 16px 0; }

#fx-modal input { margin-bottom: 12px; }