body { font-family: 'Segoe UI', sans-serif; background-color: #f0f2f5; margin: 0; }
nav { background: #2c3e50; color: white; padding: 15px; display: flex; justify-content: space-between; align-items: center; }
.login-container { width: 300px; margin: 100px auto; background: white; padding: 30px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); text-align: center; }
input { width: 100%; padding: 10px; margin: 10px 0; border: 1px solid #ddd; border-radius: 4px; box-sizing: border-box;}
button { width: 100%; padding: 10px; border: none; border-radius: 4px; cursor: pointer; color: white; font-weight: bold; }
.container { max-width: 800px; margin: 20px auto; display: grid; gap: 20px; }
.clock-card, .history-card { background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.05); text-align: center; }
#relogio { font-size: 3em; font-weight: bold; color: #333; margin: 10px 0; }
.btn-entrada { background-color: #27ae60; margin-bottom: 10px; }
.btn-saida { background-color: #c0392b; }
.btn-logout { color: #ecf0f1; text-decoration: none; border: 1px solid white; padding: 5px 10px; border-radius: 4px; }
table { width: 100%; border-collapse: collapse; margin-top: 15px; }
th, td { padding: 10px; border-bottom: 1px solid #eee; text-align: left; }
.badge { padding: 5px 10px; border-radius: 12px; font-size: 0.8em; color: white; }
.entrada { background-color: #27ae60; }
.saida { background-color: #c0392b; }
.error { color: red; font-size: 0.9em; }