:root { --primary: #005bb7; --accent: #00d2ff; --bg: #f4f7f6; --white: #ffffff; }
body { font-family: sans-serif; margin: 0; background: var(--bg); }
.hidden { display: none !important; }
header { background: var(--primary); color: white; padding: 10px; }
.top { display: flex; justify-content: space-between; align-items: center; padding-bottom: 10px; }
nav { display: flex; flex-wrap: wrap; gap: 5px; }
nav button { background: rgba(255,255,255,0.2); border: none; color: white; padding: 8px 12px; cursor: pointer; border-radius: 4px; font-size: 12px; }
.banner { background: white; padding: 10px 20px; border-bottom: 2px solid var(--accent); font-weight: bold; color: var(--primary); }
main { padding: 20px; }
.card { background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
input, select, textarea { width: 100%; padding: 10px; margin: 8px 0; border: 1px solid #ddd; border-radius: 4px; box-sizing: border-box; }
.primary-btn { background: var(--primary); color: white; border: none; padding: 12px; border-radius: 4px; cursor: pointer; width: 100%; }
.tooth-chart .row { display: flex; justify-content: center; gap: 4px; margin-bottom: 5px; }
.t-btn { width: 40px; height: 40px; font-size: 10px; border: 1px solid var(--primary); cursor: pointer; }
.t-btn.active { background: var(--accent); color: white; }
.modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); display: flex; justify-content: center; align-items: center; z-index: 99; }
.modal-content { background: white; padding: 20px; border-radius: 8px; }