* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, rgb(122,187,166) 0%, rgb(53, 82, 73) 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

header {
  background: white;
  padding: 20px;
  border-radius: 10px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header h1 {
  color: rgb(122,187,166);
  font-size: 24px;
}

.user-info {
  display: flex;
  gap: 10px;
  align-items: center;
}

.login-box {
  background: white;
  padding: 40px;
  border-radius: 10px;
  max-width: 400px;
  margin: 100px auto;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.login-box h1 {
  text-align: center;
  color: rgb(122,187,166);
  margin-bottom: 10px;
  font-size: 32px;
}

.subtitle {
  text-align: center;
  color: #666;
  margin-bottom: 30px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  color: #333;
  font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="password"] {
  width: 100%;
  padding: 12px;
  border: 2px solid #e0e0e0;
  border-radius: 5px;
  font-size: 16px;
  transition: border-color 0.3s;
}

.form-group input:focus {
  outline: none;
  border-color: rgb(122,187,166);
}

.form-group small {
  display: block;
  margin-top: 4px;
  color: #666;
  font-size: 12px;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s;
}

.btn-primary {
  background: rgb(122,187,166);
  color: white;
  width: 100%;
}

.btn-primary:hover {
  background: rgb(37, 108, 86);
}

.btn-small {
  padding: 8px 16px;
  font-size: 14px;
  background: #f0f0f0;
  color: #333;
}

.btn-small:hover {
  background: #e0e0e0;
}

.btn-danger {
  background: #dc3545;
  color: white;
}

.btn-danger:hover {
  background: #c82333;
}

.error {
  background: #ffe6e6;
  color: #d32f2f;
  padding: 12px;
  border-radius: 5px;
  margin-bottom: 20px;
  border-left: 4px solid #d32f2f;
}

.calendar-container {
  background: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.calendar-container h2 {
  color: #333;
  margin-bottom: 10px;
}

.instructions {
  color: #666;
  margin-bottom: 30px;
}

.calendar {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.day-card {
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  padding: 15px;
  transition: all 0.3s;
  position: relative;
}

.day-card.available {
  border-color: #4caf50;
  background: #f1f8f4;
}

.day-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  border-color: #667eea;
}

.day-card.available:hover {
  border-color: #4caf50;
}

.day-header {
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid #f0f0f0;
}

.day-name {
  font-weight: bold;
  color: rgb(90, 139, 124);
  font-size: 18px;
}

.date {
  color: #666;
  font-size: 14px;
  margin-top: 4px;
}

.availability-badge {
  display: inline-block;
  margin-top: 8px;
  padding: 4px 10px;
  background: #4caf50;
  color: white;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.day-status {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.status-btn {
  flex: 1;
  padding: 14px;
  border: 2px solid #e0e0e0;
  background: #f9f9f9;
  border-radius: 5px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s;
}

.status-btn:hover {
  border-color: #f44336;
  background: #fff;
}

.status-btn.reset-btn {
  background: #fff3e0;
  border-color: #ff9800;
  color: #e65100;
}

.status-btn.reset-btn:hover {
  border-color: #ff9800;
  background: #ffe0b2;
}

.status-btn.active.will-not-use {
  background: #f44336;
  color: white;
  border-color: #f44336;
}

.day-status-readonly {
  padding: 12px;
  margin-bottom: 10px;
  background: #f5f5f5;
  border: 2px dashed #ccc;
  border-radius: 5px;
  text-align: center;
}

.readonly-notice {
  color: #666;
  font-size: 13px;
  font-weight: 600;
}

.others-not-using {
  margin-top: 10px;
  padding: 8px;
  background: #fff3e0;
  border-radius: 4px;
  color: #e65100;
  font-size: 12px;
}

.admin-container {
  display: grid;
  gap: 20px;
}

.admin-section {
  background: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.admin-section h2 {
  color: #333;
  margin-bottom: 20px;
}

.user-form {
  max-width: 500px;
}

.users-list {
  display: grid;
  gap: 15px;
}

.user-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
}

.user-info-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  background: #667eea;
  color: white;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  width: fit-content;
}

.badge-readonly {
  background: #9e9e9e;
}

.badge-regular {
  background: #4caf50;
}

.text-muted {
  color: #999;
  font-size: 12px;
}

@media (max-width: 768px) {
  .calendar {
    grid-template-columns: 1fr;
  }
  
  header {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
  
  .user-info {
    flex-direction: column;
  }
  
  .login-box {
    margin: 50px auto;
    padding: 30px 20px;
  }
}