:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --danger: #ef4444;
  --success: #10b981;
}

* { box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; margin: 0; padding: 0; }
body { background-color: var(--bg); color: var(--text); padding-bottom: 40px; }

header { background: var(--primary); color: white; padding: 16px; text-align: center; position: sticky; top: 0; z-index: 10; box-shadow: 0 2px 4px rgba(0,0,0,0.1); display: flex; justify-content: space-between; align-items: center; padding-left: 20px; padding-right: 20px;}
header h1 { font-size: 1.2rem; }
#userInfo { font-size: 0.85rem; opacity: 0.9; }
.logout-btn { background: #ef4444; color: white; border: none; padding: 6px 12px; border-radius: 4px; cursor: pointer; font-size: 0.8rem; }
.logout-btn:hover { background: #dc2626; }

.container { max-width: 600px; margin: 0 auto; padding: 16px; }

.card { background: var(--card-bg); border-radius: 12px; padding: 16px; margin-bottom: 16px; border: 1px solid var(--border); box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
.card h2 { font-size: 1.1rem; margin-bottom: 12px; border-bottom: 2px solid var(--bg); padding-bottom: 8px; color: var(--primary); }

.form-group { margin-bottom: 12px; position: relative; }
label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 4px; color: var(--text-light); }
input, select, button { width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border); font-size: 0.95rem; outline: none; }
input:focus, select:focus { border-color: var(--primary); }

button { background: var(--primary); color: white; border: none; font-weight: 600; cursor: pointer; transition: background 0.2s; }
button:hover { background: var(--primary-hover); }
button.btn-secondary { background: #64748b; }
button.btn-danger { background: var(--danger); }
button.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }

.autocomplete-items { position: absolute; border: 1px solid var(--border); border-top: none; z-index: 99; top: 100%; left: 0; right: 0; background-color: #fff; border-radius: 0 0 8px 8px; max-height: 150px; overflow-y: auto; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
.autocomplete-items div { padding: 10px; cursor: pointer; border-bottom: 1px solid var(--bg); font-size: 0.9rem; }
.autocomplete-items div:hover { background-color: #f1f5f9; }

.deelnemers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; margin-top: 8px; }
.deelnemer-checkbox { display: flex; align-items: center; gap: 6px; font-size: 0.85rem; background: var(--bg); padding: 6px 10px; border-radius: 6px; cursor: pointer; }
.deelnemer-checkbox input { width: auto; }

.tabs { display: flex; gap: 8px; margin-bottom: 16px; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.tab-btn { flex: 1; padding: 8px; background: transparent; color: var(--text-light); border: none; border-bottom: 2px solid transparent; border-radius: 0; }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: bold; }

.expense-item, .balance-item { display: flex; justify-content: space-between; align-items: center; padding: 12px; border-bottom: 1px solid var(--border); }
.expense-item:last-child { border-bottom: none; }
.expense-info h4 { font-size: 0.95rem; margin-bottom: 2px; }
.expense-info p { font-size: 0.8rem; color: var(--text-light); }
.expense-amount { font-weight: bold; font-size: 1rem; color: var(--text); }
.expense-actions { display: flex; gap: 6px; margin-top: 4px; }
.expense-actions button { padding: 4px 8px; font-size: 0.75rem; width: auto; }

.photo-preview-container { text-align: center; margin: 12px 0; display: none; }
.photo-preview-container img { max-width: 100%; max-height: 200px; border-radius: 8px; border: 1px solid var(--border); }

#ocrStatus { font-size: 0.8rem; color: var(--primary); margin-top: 4px; font-style: italic; }
.hidden { display: none !important; }